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%% If an example has to do with a song, but not its in-game BGA, chart, or other game-specific elements, you may want to consider instead putting it under Music/Vocaloid or the song artist's page, if any.
%%
%% For consistency's sake, please use the officially given English names for songs! Your favorite fansubber or the original Japanese might have a different title, but throwing around three different names for the same song will confuse people.
%%
[[quoteright:350:http://static.tvtropes.org/pmwiki/pub/images/diva_vita.png]]
[[caption-width-right:350:Hatsune Miku and her merry friends.[[labelnote:*]]From left to right, Kaito, Meiko, Kagamine Len, Hatsune Miku, Kagamine Rin, Megurine Luka.[[/labelnote]]]]

->''It started with one dot...''

''Hatsune Miku: Project DIVA'' is a series of Music/{{Vocaloid}}-themed {{rhythm game}}s released by {{Sega}}. As the title may very vaguely imply, Miku is front and center, although the other Crypton Vocaloids, Rin, Len, Luka, Meiko, and Kaito, get their share of the spotlight, as well.

The aim of the game is simple. Notes fly toward stationary targets on screen and you press their corresponding buttons when they overlap the markers. This task is spiced up by detailed, unique 3D music videos for each song, as well as quite frankly ridiculous bonus difficulties. The series finally made its overseas debut in August 2013 with ''Project DIVA F'', with the budget re-release of the Vita version following in 2014, but the other games are relatively import-friendly. ''Project mirai'' finally made its way over with the release of ''mirai DX'' in 2015, so 3DS players can rejoice, too!

The 10th game in the main series, ''Project Diva X'', was announced for a Vita (March 2016) and [=PS4=] (Fall 2016) release in Japan. Also, announced a few weeks later was a version of ''Project Diva Arcade: Future Tone'' for [=PS4=], which released in mid-2016.

[[folder:Games in the Series]]
!!!''DIVA'' Series
* ''Hatsune Miku: Project DIVA'' (PSP, 2009) -- The first game in the ''DIVA'' series, and the first foray for the then-blossoming Vocaloids into the video game department. Introduces Hatsune Miku, Kagamine Rin and Len, Megurine Luka, MEIKO, KAITO, Yowane Haku, Akita Neru, and Sakine Meiko, as well as 53 Modules and 32 different songs. Introduces the fundamental gameplay mechanics for the series, including the four-button gameplay with three unique difficulties. [[OddballInTheSeries Known for being very different from its future installments.]]
** ''Hatsune Miku: Project DIVA Dreamy Theater'' ([=PS3=], 2010) -- Add-on DLC for ''Hatsune Miku: Project DIVA''. This software enables players to link their ''Project DIVA'' save data and play the game in 60 FPS high definition utilizing overhauled console-tier graphics, but is otherwise the same game.
* ''Hatsune Miku: Project DIVA'' ''[=2nd=]'' (PSP, 2010) -- The second game in the ''DIVA'' series. Introduces Kasane Teto as DownloadableContent. Introduced many of the series' mainstay mechanics, including Wide and Hold Notes, a success system based on COOL and FINE notes hit rather than score, [[HarderThanHard EXTREME]] difficulty, [[AchievementSystem Titles]], character edit for [=PVs=], individual DIVA Rooms for every character, a Shop, and Help Items. Expands upon the pre-existing Module and song list, boasting over 120 Modules and 58 songs. Currently holds the highest number of playable songs in the main series.
** ''Hatsune Miku: Project DIVA'' ''[=2nd=] [[UpdatedRerelease #]]'' (PSP, 2011) -- Also known as ''Hatsune Miku: Project DIVA 2nd (Low Price Edition)''. An UpdatedRerelease of ''2nd'' that includes a plethora of bugfixes, as well as less LoadsAndLoadsOfLoading and all of ''extend'''s Modules as a free DLC code.
** ''Hatsune Miku: Project DIVA Dreamy Theater 2nd'' ([=PS3=], 2011) -- Add-on DLC for ''2nd''. Functions identically to the first ''Dreamy Theater'', allowing players to play ''2nd'' on the big screen.
* ''Hatsune Miku: Project DIVA extend'' (PSP, 2011) -- The third game in the ''DIVA'' series. Introduces Challenge Items, equippable modifiers that make the game harder but dispense more DIVA Points. Includes 172 Modules and 38 playable songs. Often erroneously described as an UpdatedRerelease of ''[=2nd=]'', it's better described as the first game's songlist with the second game's gameplay and some extras.
** ''Hatsune Miku: Project DIVA Dreamy Theater Extend'' ([=PS3=], 2012) -- Add-on DLC for ''extend''. Functions identically to previous ''Dreamy Theater''s, allowing players to play ''extend'' through their console.
!!!''F'' Series
* ''Hatsune Miku: Project DIVA '' (Vita, 2012/2014) -- The fourth game in the ''DIVA'' series, and the first game to see a worldwide release. Introduces a host of new mechanics alongside the console upgrade, including Scratch Notes, Technical Zones, and the Grade Point system. Also introduces a graphical upgrade as well as greater special effect capacity. Notable for retiring the majority of old content from previous games, only using new songs and Modules save for the [=V3=] designs. Includes 101 Modules and 38 playable songs.
** ''Hatsune Miku: Project DIVA'' ''[[UpdatedRerelease F]]'' ([=PS3=], 2013) -- An UpdatedRerelease of '''' for home consoles. Plays similarly to the handheld edition, except Scratch Notes are now controlled by the analog sticks and all previously-released DownloadableContent is included on-disc. Replaces AR Mode from the Vita version with Live Concert Mode, which allows players to view virtual concert versions of various songs.
** ''Hatsune Miku: Project DIVA :'' ''[[UpdatedRerelease Best Price Edition]]'' (Vita, 2013) -- An UpdatedRerelease of for the Vita. Much like ''2nd#'', ''Best Price Edition'' includes updated graphics and added content.
* ''Hatsune Miku: Project DIVA F'' ''[=2nd=]'' ([=PS3=]/Vita, 2014) -- The fifth game in the ''DIVA'' series, and the second game released internationally. Introduces further expansions to the Scratch mechanics seen in '''', including Wide Scratch Notes and Scratch Links, as well as adjusting Scratch Note timing windows. Challenge Item stacks are introduced, allowing players to combine up to three Challenge Items at once for even higher payouts. ''F 2nd'' makes a return to form, mixing new songs with older content now upgraded to modern standards. Includes 160 Modules and 56 playable songs.
!!!''X'' Series
* ''Hatsune Miku: Project DIVA X'' (Vita, 2016) -- The sixth game in the ''DIVA'' series, and the fourth game released internationally. ''X'' returns to the gameplay seen in '''', removing the additional Scratch mechanics from ''F 2nd'' while introducing Rush Notes, which grant you bonus points for ButtonMashing. Introduces Live Quest Mode, a story mode where the player follows Hatsune Miku on her quest to restore the world of music that she and her fellow Vocaloids reside in via returning power to the Element Gems, representations of the Elements that comprise their world and have lost their strength. Live Quest Mode introduces the Voltage system, where the player must score enough Voltage, or points, to clear a song and unlock new Modules and Accessories. The Shop is retired for the first time since ''2nd'' in favor of the Live Quest mechanics. Includes over 310 Modules, 27 songs and 6 Medleys. Currently holds the highest number of Modules in a main series game.
** ''Hatsune Miku: Project DIVA X HD'' ([=PS4=], 2016) -- An UpdatedRerelease of ''X'' that brings the series to UsefulNotes/PlayStation4. Features enhanced visuals that take advantage of the console's capabilities, including improved lighting and shadow effects, revised shaders, and miscellaneous quality improvements in 1080p, 60 frames per second. A later patch adds VR support to selected parts of the game.
!!!''Arcade''
* ''Hatsune Miku: Project DIVA Arcade'' ([[ExactlyWhatItSaysOnTheTin Arcade]], 2010) -- An arcade installment that brings the gameplay of the ''DIVA'' series to arcades. Possesses similar gameplay to ''Project DIVA'', although [[OddballInTheSeries several changes are made that make it unique to the main series.]] Aesthetically similar to ''Dreamy Theater''. Possessing an Aime card enables players to link to its interconnectivity service known as ''DIVA.NET'', which allows them to access game records and the Shop remotely, as well as redeem prizes and set game options.
** ''Hatsune Miku: Project DIVA Arcade Future Tone'' (Arcade, 2014) -- The first title update to ''Arcade''. Retains the gameplay of its predecessor while introducing Slide Notes, where the player slides their hand across a glowing bar to complete notes. Introduces Quests, a series of challenges that can be completed for rewards, Cards, collectible virtual trading cards based on in-game content that can be used for various ''DIVA.NET'' features, and EXTRA EXTREME, an extension to the present EXTREME difficulty that includes Slide Notes on its charts and are exclusive to select pre-update tracks.
!!!''Future Tone''
* ''Hatsune Miku: Project DIVA Future Tone'' ([=PS4=], 2016/2017) -- A console version of ''Arcade Future Tone'', and the fifth game released internationally. Retains the gameplay and look of the ''Arcade'' installments while re-introducing features familiar to the main series. Introduces Practice Mode, Survival Course, and online leaderboards for high scores. Released in America and Europe in January 2017.
** ''Hatsune Miku: Project DIVA Future Tone Prelude'' -- Prelude acts as a free to play frontend for the Future Tone game, as well as the demo. Includes two songs: "Weekender Girl" and "1/6 -out of the gravity-", as well as 40 Modules.
** ''Hatsune Miku: Project Diva Future Tone: Future Sound'' ([=PS4=], 2016) -- One of two DLC Packs for Prelude, this pack focuses on songs from the ''Project DIVA'' and ''F'' series. Includes 128 songs and 172 modules.
** ''Hatsune Miku: Project Diva Future Tone: Colorful Tone'' ([=PS4=], 2016) -- The second DLC Pack for Prelude, this pack focuses on songs from the ''mirai'' series, as well as songs never released outside Arcade. Includes 96 songs and 106 modules.
!!!''mirai'' Series
* ''Hatsune Miku and Future Stars: Project mirai'' ([=3DS=], 2012) -- The first game in the ''mirai'' spin-off series. Introduces Hatsune Miku, Kagamine Rin and Len, Megurine Luka, MEIKO, KAITO, and Internet Co.'s GUMI in adorable SuperDeformed Nendoroid form as they make their debut on a Nintendo console. Gameplay involves following a line as it hits targets on the edge of a circle Includes 43 Costumes and 20 songs.
* ''Hatsune Miku: Project mirai 2'' ([=3DS=], 2013) -- The second game in the ''mirai'' spin-off series. Gameplay takes on a different form, opting for a ''Groove Coaster''-esque presentation with notes appearing on a track while absorbing elements from both the main series and ''Arcade''. Brings back the songlist of the first game, adds 26 new songs and 71 new costumes, and introduces new Mirai Room mechanics and Tap Mode, an alternate game mode played entirely with the [=3DS=]' touchscreen. Includes 105 Costumes, 5 additional Costumes for GUMI, and 46 songs.
** ''Hatsune Miku: Project mirai [[UpdatedRerelease Deluxe]]/[[MarketBasedTitle DX]]'' (3DS, 2015) -- The third game released internationally, an UpdatedRerelease of ''mirai 2'' that was RemadeForTheExport, adding one new song and four new Costumes as well as granting more previous songs new [=PVs=] that use the in-game models. Introduces [[HarderThanHard Super Hard]] mode, a special difficulty unlockable for six select songs that cranks up their difficulty a few extra notches. Also includes additional Mirai Room mechanics, such as Mirai Resort idle events and the Music Player. [[AscendedMeme Introduces Mikudayo as an outfit for Miku.]]
!!!Mobile
* ''Miku Flick'' (iOS, 2012) -- A mobile game iteration of the ''DIVA'' series. Utilizes the graphics and [=PVs=] featured in ''Dreamy Theater'' and ''Arcade'' while introducing a more linear gameplay system that involves utilizing an on-screen hiragana keyboard to tap and swipe out parts of the song's lyrics as they're performed. Features 14 songs.
* ''Miku'' ''[=Flick/02=]'' (iOS, 2012) -- The sequel to the first ''Miku Flick''. Introduces non-Miku songs and EXTREME difficulty for a harder challenge. Adds Interlude Mini-Game, a second mechanic where you tap a large button to notes during instrumental portions a la a standard rhythm game for bonus points, and Fever Mode, a trigger for reaching 100 Combo that increases the points earned per COOL to 100. Features 11 included songs and 63 DLC songs.
!!!VR
* ''Hatsune Miku: VR Future Live'' (PS4, 2016) -- A "game" exclusively for the Playstation VR that functions more as a tech demo for the hardware. Enables viewing and interacting with Vocaloid concerts in virtual reality. Sold in [[OneGameForThePriceOfTwo three separate iterations]]: "1st Stage" (Hatsune Miku), "2nd Stage" (Kagamine Rin, Len, Megurine Luka), and "3rd Stage" (MEIKO, KAITO).
[[/folder]]
----

!This series provides examples of:
* ACupAngst: In ''F'', Rin is this in ''Rin-chan Now!'' when Luka dreams of filming Rin in her outfit and making fun of her flat chest.
** Immediately averted in the next scene with the emergence of Future Style Rin.
* AchievementSystem: Every game in the series has Titles, which are awarded for performing certain tasks and are purely cosmetic. Starting with ''F'', the UsefulNotes/PlayStation's Trophy system was integrated, which (rather redundantly) awards Trophies for acquiring Titles. ''Mirai'' uses a Stamp Card that functions equivalently to Titles, but with Stamps.
* AdaptationExpansion: The ''Future Tone'' version of "No Logic" actually added scenes and new dance parts that the ''mirai'' version did not have.
* AdaptationPersonalityChange: Because of the nebulous nature of what's considered "official" through Crypton's partnership with SEGA, ''X'', which gives the characters far more personality than prior entries had, is careful to mention in the credits that the characterizations were made specifically for the game and differ from Crypton's official characterization (or lack thereof, a policy the company is careful to maintain to promote individual creators' freedom).
* AdvertisedExtra: In ''X'', Ultimate Miku is a prominent character in the opening, getting more screentime than even ''Miku -Original-'' and all of the other Vocaloids combined. She is unlockable from ''the last song.''
* AffectionateGestureToTheHead: In those entries that have the Diva Room, one of two ways to raise a Vocaloid's Affinity is by rubbing their forehead. They don't like it if you do it too long, though.
** ''X'' removes the ability to headrub, averting this, but you can still poke them, and sometimes ''they'll even poke you back!''
* AfterTheEnd: Both "God-Tier Tune" and "Hello Planet" take place after TheEndOfTheWorldAsWeKnowIt. In the former case, the world is already over and [[SuperDeformed chibi Vocaloids]] are trying to revive it with growing plants and cute stuff, while in the latter, [[ApocalypseHow we see it happen,]] and the rest of the song follows Miku's journey to reunite with her long lost master and revive the last surviving plant on Earth.
* AllJustADream:
** "Gigantic Girl"'s music video, featuring a [[ExactlyWhatItSaysOnTheTin giant-sized Miku]] ''fighting Godzilla'', is all in her head.
*** Notably, in both "Gigantic Girl" and "Time Machine", where the figurines appear, Miku is building a city diorama.
** The Chance Time bonus video for "Kagerou Daze" features Miku waking up with a jump every time she dies, making it appear as her last failure was simply a dream. [[FateWorseThanDeath The context of the original song says otherwise, though.]]
* AllOrNothing: The Do or Die item in ''Mirai DX'' instantly kills you if you break your combo, but if you succeed, you get double the Mirai Points for it. It also omits MercyInvincibility at the beginning of the song, but the point is moot since you have to get a Perfect anyways.
* AllTheWorldsAreAStage: The version of "World's End Dancehall" used in ''Arcade'' takes Miku and Luka through numerous existing stages throughout the song's duration.
* AmazingTechnicolorBattlefield: Holy cow, '''2D Dream Fever'''. This song alone should come with a seizure warning installed.
* AnInteriorDesignerIsYou: In all the games except the Arcade versions, there's the Diva Room, which lets you decorate the Vocaloids' rooms.
* AndNowForSomethingCompletelyDifferent: "Kagerou Daze" in ''F 2nd'' is perhaps the only song in the series where Chance Time happens right at the start and clearing it affects the entire rest of the level.
** Project Diva Future Tone is a free download that you add the [[CrackIsCheaper two packs costing 7800 yen before tax to]].
* AndYourRewardIsClothes:
** Each game has ''massive'' amounts of costumes (called "modules") to unlock. At least half the modules belong to Miku in each game. Taken to crazy levels with "Senbonzakura" in ''Project Diva F'', which requires you to play the song multiple times to unlock all of the modules from it.
** Some of the DLC in Project Diva F 2nd is various outfits, including three costumes for characters who are ALREADY DLC, and one who was merged into another character as of Project Diva F. Notably, one of the DLC costumes in this set is newly created for games from Project Diva F 2nd onwards. [[note]]Kasane Teto had NO DLC or bundled costumes in any game before Project Diva F 2nd.[[/note]]
** Taken to ludicrous heights in ''X'', which starts with 70 costumes by default, but also has costumes from ''F'' and ''F 2nd'' for a total of '''over 300''' costumes, excluding DLC. In addition, every costume has a special Skill that tweaks gameplay, such as skills that increase the amount of Voltage you earn from Technical Zones or the odds of getting a Rare Module to drop from completing Chance Time.
** Project Diva Arcade tops the reward count, with 342 modules in the version ported to the [=PS4=] alone, and extra modules being added MONTHLY. There is zero chance of any player legitimately unlocking every single module in the game without playing the game non-stop in any kind of acceptable rate.
* AndYourRewardIsInteriorDecorating: The DIVA Room function allows you to personalize living spaces for the Vocaloids by collecting Room Items and buying furniture and themes to make your favorite room. Depending on the game, you can usually buy these items through the Shop, but in titles like ''X'', they drop from playing the game.
* AnimeThemeSong: All OriginalGeneration, of course. [[{{Music/Supercell}} ryo]] is a popular choice for theme song composers. Except for ''Project Diva X'', all of them have a near-perfect copy of their debut game's music video in the arcade release.
** ''Project DIVA'' opened with "The secret garden" by Satoru Kousaki.
** ''2nd'' opened with "Look This Way, Baby" by ryo.
** ''Extend'' opened with "Sekiranun Graffiti" by ryo.
** ''F'' opened with "ODDS&ENDS" by ryo.
** ''F 2nd'' opened with "DECORATOR" by kz.
** ''X'' opened with "Name of the Sin" by ryo.
** ''mirai'' opened with "Yumeyume" by DECO*27.
** ''mirai 2'' opened with "Ageage Again" by Mitchie M.
** ''mirai Deluxe'' opened with "Nice to Meet You, Mr. Earthling!" by [=pinocchioP=].
* AntiFrustrationFeatures:
** On ''2nd'', ''Extend'' and ''F 2nd'', you can unlock anything you already have on the previous game by simply transferring the save data. With ''F 2nd'', this includes the ability to download the Extra Characters DLC.
*** A additional feature for ''F 2nd'''s save data is that it can be transferred between versions, automatically cloud saving when needed.
** In ''F 2nd'', all the Diva rooms are unlocked automatically, instead of requiring you to complete a certain song on NORMAL, and most items for the mode are unlocked through progression in that mode.
** Want to know how to unlock a particular bonus costume in ''F 2nd''? Each song has a unlock count, plus a new Information Board, which outright explains every single unlockable you still need to get in plain terms.
** One of the Extra Markers available in ''F'' requires a Promo Rare ''TabletopGame/WeissSchwarz'' card known as "Nice to Meet You! Hatsune Miku"[[labelnote:*]]はじめまして初音ミク[[/labelnote]], which depicted Miku backed by AR marker icons. Although the set was released in English, that card in particular never made it overseas. Those curious can alternatively grab a replica off the game's official website.
** In Project Diva F 2nd for the Playstation Vita and Project Diva Future Tone for the [=PS4=], scratch or slide notes can be assigned to touch controls or the analogue sticks. Future Tone also takes this further with the option to remap the entire control scheme, to allow for songs like Intense Voice, which infamously on it's Extreme chart includes a point where you're practically hitting every button at once, which is physically impossible on a controller with any kind of accuracy.
** In ''Arcade'' and ''Mirai'', a small chunk of your LifeMeter is protected by a "Safety" guard for the first 30 seconds of the song, so even if you struggle with the chart you won't immediately go from loading screen to GameOver. How ''much'' is protected, on the other hand, is determined by difficulty; Extreme/Super Hard has a considerably small "Safety" zone, while Easy has the largest.
** ''Mirai DX'' comes with the option to switch the note colors between those used by Nintendo consoles and those used by Playstation consoles, for people who prefer the latter, and more common, colors. Also handy for avoiding [[DamnYouMuscleMemory confusing the placement of buttons on a 3DS with the placement on a PlayStation controller]].
** In addition to the "Clear" bar as a holdover from ''Arcade'', ''Future Tone'' also shows you "Great" and "Excellent" bars for the score required to achieve that rank, which ''Arcade'' does not have.
** The controls for Future Tone allow you to map pressing up to three buttons to a single button press, allowing for songs like [[NintendoHard Intense Voice]], since there is no practical way to do some of the note combinations the arcade game uses.
** ''Future Tone'' uses a similar method to ''VideoGame/DeadOrAlive5'', Prelude converting into the full ''Future Tone'' game simply by downloading both packs. .
* ApocalypseHow: The ''mirai'' PV for "Hello, Planet" features a scene of Miku watching the world turn to ashes as meteors rain from the sky and devastate the planet.
* AprilFoolsDay: 2015 had SEGA feature [[https://youtu.be/oHpIardhZ24 a video update]] for ''Arcade'' that had Miku performing in the giant Mikudayo head accessory. The head was subsequently made available in-game for 1500 VP.
* ArcNumber: 39, pronounced "sankyu"[[note]]Technically "sanjyukyu", but for the purposes of this trope, "39" is treated like two separate numbers[[/note]], like the English phrase "thank you", can [[AlternateCharacterReading also be read as "miku".]] As a result, this number runs rampant throughout the franchise; we'd be here all day if every example were listed, but there are some notable ones:
** There was a limited edition ''DIVA 2nd'' Memory Stick PRO Duo that had an advertised capacity of 3.9GB[[note]]Although it was actually a 4GB card with preloaded data that brought the actual storage capacity down to 3.9GB[[/note]] and sold for ‎¥3939.
** ''Dreamy Theater 2nd'' used to cost ''‎¥3900'' on the PSN Store and has a specifically odd file size of ''3939 MB''.
*** ''Project Diva Future Tone'' revisits that price, with the two packs and [[DownloadableContent season pass]] costing that each.
** 39, Miku's anniversary song, whenever she sings san-kyu, has the subtitles displaying "THANK YOU (39)" instead of the phonetic words.
** ''Project Mirai 2'' includes ''VideoGame/PuyoPuyo 39'' as a minigame.
** The 39th Stamp in ''Mirai DX'', "Goddess", is for having max Affection with Miku. There's also a stamp for spending 39 hours in-game.
** A '''ton''' of [=PVs=] feature the number "39" in some way, shape, or form.
* ArtEvolution:
** The ''Dreamy Theater'' DLC and ''Arcade'' installments use a notably different graphic style from its handheld counterparts that involves brighter colors and more realistic lighting, shaders, and physics.
** ''F'' greatly revised the look of the series thanks to the console jump, supporting a new engine that allows for sharper models and less saturation with more vivid colors. This carried on into the sequel, where many old songs were remastered in the new style with enhanced graphical and special effects.
** Several songs released only in ''Project Mirai'' were exported to Project Diva Future Tone, with remixed music videos that take advantage of the Diva modules being human scale, and of the immensely superior rendering engine when doing the backgrounds, like Sweet Magic having much more realistic biscuits and Sing And Smile's costumes having the actual ''Cheerful Japan!'' logo on them, and the strobe lighting on some songs uses distinctly segmented lighting.
* ArtShift: A handful of songs use either an alternate style separate from that of other songs, or dedicates portions to this. For example, "World's End Umbrella" in ''F'' combines the traditional style with an anime video.
** Several songs in Mirai and Future Tone have music videos which don't use the in-game engine, like "glow" in ''Mirai DX'' uses a paper cutout for Miku as opposed to a model, which also prevents the outfit from being changed.
* ArtStyleDissonance: ''Mirai DX'' relishes in the fact that it has the cutest style in the franchise, and then goes and pairs it with some of the most unfitting songs possible. Standout examples include "Invisible", which is straight-up 99% '''metal''', while Aku no Musume/Aku no Meshitukai are quite possibly [[DarkerAndEdgier the darkest pair of songs in the entire franchise.]] If they had added any of the other songs in either series[[note]]"Invisible" is part of kemu's ''Pandora Voxx'' series, while the latter pair are from mothy's Story of Evil, which is part of the overarching Evillious Chronicles[[/note]], [[UpToEleven it would have only gotten worse.]]
* AscendedMeme:
** The fan-made derivatives, including Hachune Miku, Tako Luka, Akita Neru, Yowane Haku, Sakine Meiko, and Kasane Teto, all ascended thanks to this series, becoming officially recognized by Crypton. Hachune and Tako appear in numerous songs and in opening movies, Sakine is an alt outfit for MEIKO, and Neru, Haku, and Teto usually appear as DownloadableContent, replete with their own outfits[[note]]Except Teto, who is actually owned by TWINDRILL thanks to being {{Music/UTAU}}. It wasn't until ''F 2nd'' rolled around that she finally got a pair of new outfits, a swimsuit and a pink camo jacket[[/note]].
** The "song" "Ievan Polka" involves Hachune Miku performing the "Leek Spin" for the duration of the track.
** "Watashi no Jikan/My Time" in ''mirai'' references [[VisualNovel/SchoolDays "Nice Boat"]].
** In ''Puyo Puyo 39'', getting to 7-Chain as Rin or Len causes them to drop in on a roadroller while shouting "ROAD ROLLER!" Miku will also wave leeks around when achieving a 3-chain.
** The "Sonic the Hedgehog" statue in ''mirai'' states [[Anime/SonicX "Gotta go fast!"]] in its description. The Road Roller item also has [[Manga/JoJosBizarreAdventure "WRYYYYYYYYYY!"]]
* AssimilationPlot: The story of [[LongTitle "This is the Happiness and Peace of Mind Committee"]] from ''F 2nd''. A representative of said committee, the Siren (Miku), wants everyone in the world to be completely, unconditionally, and equally happy. Anyone who isn't... well, it won't [[NightmareFuel end]] [[ParanoiaFuel well]].
* AutoRevive: The "Recovery" item in both ''DIVA'' and ''Mirai'' heals you to max health if you would have died. The former imposes no penalty, allowing you to use it to survive through difficult sections, but the latter negates your high score for using it.
* AwardBaitSong: Several songs, such as "Time Machine" and "Continuing Dream" from ''F'' and "Sakura Rain" from ''F'' ''[=2nd=]''. It's easier to list the songs that aren't, due to the selection being intentionally some of the greatest hits of the Vocaloids.
* BackgroundMusicOverride: Much like its appearance in [[VideoGame/SonicRiders another SEGA game]], the Hang-On Bike from ''Mirai DX'' replaces the BGM with the Hang-On theme when used by a Vocaloid.
* BadassDriver: In "Urbandonment", a half-materialized bridge won't stop Miku from launching off of it, performing a barrel roll in midair in ''slow motion'', and landing safely on her wheels some distance away.
* BaitAndSwitch:
** "This is the Happiness and Peace of Mind Committee" is a slow, soft song set in the middle of a bright park surrounded by trees. Then the first verse ends, the facade disappears and everything quickly dissolves into dystopian hell.
** "Invisible" is infamous for opening with a jaunty piano piece that sounds like it jumped straight out of a silent film, then suddenly blaring hard rock in your face five seconds later. Players with headphones/speakers at max volume are in for a ''very'' rude surprise. [[NintendoHard It also is one of the hardest songs in the game, having very short delays between notes, even on Easy.]]
* BandageBabe: Miku's "Bandaged Heart" module in ''X''.
* BareYourMidriff:
** The "Invisible" outfits for Rin and Gumi in ''Mirai DX''. Of course, being SuperDeformed makes the whole point moot.
** Miku's "Ambivalence" in ''X''.
* BeachEpisode: In ''Project Mirai DX'', you can pay 100,000 MP to travel to and stay at Mirai Resort for 7 days. The resort features an extra-large villa with many spaces for room items, including a bath item slot not available in any of the homes, and boasts many exclusive idle events such as your character sunbathing on the beach and {{smashing watermelons}}. Unlike the Penthouse, which is simply treated as yet another home but with a weekly rent, traveling to Mirai Resort takes you to a new map with every service available except Mirai Estates; you won't be able to return to your homes until your vacation time expires or you choose to forfeit your vacation time to leave early.
** "Fire Flower" and "Summer Idol" in ''F'', whose videos take place at a pair of beach resorts. The "Fire Flower" video includes scenes of Rin and Len (or the chosen characters if other modules are selected) playing on a beach.
* BilingualBonus:
** The opening of the PV for "Piano Girl" is written entirely in French.
** The PV for Matryoshka features the title in Cyrillic.
* BlandNameProduct: In the ''mirai'' series, the Yamaha [=DX7=] seen in the ''DIVA'' series is replaced by a similarly-named "Hatsune [[PunnyName MI9]]" synthesizer.
** Subverted in 'Sing And Smile' on Mirai and Future Tone, where the advertising banners flick between Tricolore Airline, another song about a airline, and [[CelebrityParadox the game itself]], and the Future Tone versions of the modules retain, unedited, the ''Cheerful Japan!'' logo.
* BookEnds: In 2nd, Mikudayo joins you for the tutorial and also for the ending credits.
* BossRush: The "Ultimate Medley" from ''X'', which includes every single ClimaxBoss track from its past installments in its set.
* {{Bowdlerise}}: While it could be attributed to the poor translation the song received, "The Lost One's Weeping" in ''X'' changes a rope around someone's neck to a collar.
* BreakUpSong:
** "Koi wa Sensou"[[labelnote:*]]"Love is War"[[/labelnote]] from the first game is about a particularly bad break-up, sung from the break-uppee's perspective.
** "Just Be Friends" from ''[=2nd=]'' and ''extend'' is a softer example, sung from the break-upper's perspective.
** "Kimi no Taion" in ''Mirai DX'' is a fairly sad version of this, but you wouldn't know just by watching the video.
** "Break It, Break It!"[[labelnote:*]]"Kowase Kowase"[[/labelnote]] from ''F 2nd'' is a very angry one from the break-upper's perspective.
* BreakingTheFourthWall: "Slow Motion" has some pretty meta instances, especially when Miku references how long the song's been going on.
** In ''X'', Miku seems to be aware of the screen separating her and the player.
---> Miku: If I wasn't digital, I'd be asking you to pinch me.
** A mild case happens in ''Doremifa Rondo'', when, partway through the song, Hatsune Miku makes a singing cameo, as your Nendoroid Miku effectively collides with her, the voicebank noticeably different from how it's sung everywhere else.
** Cendrillion and Adolescence are blatantly the same song with different singers. Their note maps aren't just flipped compared to the other, a common way to work with similar songs, at several points, the note trail for the OTHER song appears, crossing over the note trail you're following, to create one symmetrical pattern.
* BribingYourWayToVictory: In ''X'', in order to unlock all of the modules and accessories, you have to do a ''lot'' of grinding... Or buy keys to unlock them all off the Playstation Network.
* BrokeTheRatingScale: Due to the usage of bonus points in ''Arcade'', ''mirai'' and ''X'', it's possible to get a score rating exceeding 100%. Project Diva X gives you a bonus item for every 100% you earn in a song.
* TheBusCameBack:
** ''Future Tone'' on [=PS4=] restores the Challenge Time section, which wasn't even included in the original arcade release. It only appears on Easy and Normal difficulties, and serves as a crutch by giving the player a massive amount of bonus points to ensure that they don't fail as easily. Challenge Time is not present on Hard or Extreme.
** ''X'' highlights the return of many aesthetics that made the first game [[EarlyInstallmentWeirdness stand out from its successors]], such as score-based clear conditions (used only in Live Quest Mode).
* ButtMonkey: Mikudayo in the "Together with Mikudayo!" promo videos for ''Mirai 2/DX''. Pretty much all of the comedy revolves around tormenting poor Mikudayo.
* ButtonMashing: ''X'''s Rush Note is a giant note that, upon being hit, allows you to continuously press the button to gain more Voltage.
** This can crop up with more intensive songs, such as "Nega*Posi Continues" and "Invisible". "The Intense Voice of Hatsune Miku" is infamous for this.
* CallARabbitASmeerp: Points are known as "Voltage" in ''X''. This is plot-relevant, since Voltage functions as an energy source for the Cloud Prisms, and to restore them, Miku and friends must collect Voltage by performing.
* CallBack:
** In "Time Machine", the two toys that caused the dream from "Gigantic Girl" are sat on the floor of the treehouse, and Miku is still building her dioramas.
** The majority of songs from ''F 2nd'' are songs that have appeared in the franchise prior to ''F''. You can even get the other games' theme songs as DLC, as well as a "[=Ha2ne=] Miku" Module from the first game that depicts a non-idol Miku.
** "The Ultimate Medley" contains a few references to its predecessor; portions of "2D Dream Fever"'s Extreme chart are reused on the Extreme difficulty, and the outro of the medley is a cleverly modified version of the ''F 2nd'' chart of "The Intense Voice of Hatsune Miku", flipping the chart roughly horizontally and swapping Xs for Os and Squares for Triangles and vice versa at certain points.
* CallingYourAttacks: Much like modern ''VideoGame/PuyoPuyo'', characters will do this at 3-Chain to 7-Chain in ''Puyo Puyo 39''. If you give Miku the Arle Nadja outfit, she'll mimic Arle's spells and animations instead.
* TheCameo:
** ''F'''s "Black Rock Shooter" features a quick scene where Miku flies through a fire silhouette of Insane Black Rock Shooter herself.
** [[FreezeFrameBonus Blink and you'll miss it,]] but in ''Mirai DX'''s "Aku no Musume", the scene featuring Rin surrounded by a crowd of commoners also has two girls sporting Kasane Teto and Akita Neru's hairstyles hidden amongst the crowd. Yowane Haku also appears in "Aku no Meshitukai" amongst the crowd of green-haired commoners watching the "girl of green" performing a song. [[spoiler:This is a reference to the novels and two related songs not in the game, "The Daughter of White" and "Tree Maiden ~Millennium Wiegenlied~", where Haku's character (named Clarith) is revealed to have been best friends with Michaela (Miku's character).]]
** Although Miku performs "Senbonzakura" solo in ''Mirai DX'', outlines of the other Vocaloids in their respective costumes from ''F'' can be briefly seen in the sky in two different shots.
* CameraAbuse: In "Rolling Girl", the camera is occasionally treated like a second character, and considering Miku is visibly pissed off for most of the video, she doesn't treat it very well.
* CanonImmigrant: Some songs from the ''Mirai'' sub-series eventually made it to ''Arcade'' through updates, although they lack the SuperDeformed quality of the ''Mirai'' games. Some of them even made it to the main series. Notably, some songs also went the OTHER way, with PVs that are much more animated.
** Generally speaking, if a song's original video on the Internet depicted the relevant Vocaloid character wearing an outfit for that song, the outfit will be either adapted to a corresponding module, or the original illustrator will send in updated versions of the designs for the games (as was the case with [[http://www.nicovideo.jp/watch/sm4794708 Wintry Winds]] and the [[http://miku.sega.jp/extend/img/module_shigure.png Shigure]] and [[http://miku.sega.jp/extend/img/module_momiji.png Momiji]] modules). But in cases where the original video doesn't come with an outfit, an original one usually gets designed for the games. As a result, sometimes the original creator of the song then reuses the module design for remasters of their song or connected media, such as the [[https://www.youtube.com/watch?v=dISiVGmoKrY Thousand-Year Solo novel]] featuring the [[http://miku.sega.jp/extend/img/module_sumire.png Violet]] design or yuukiss using [[http://projectdiva.wiki/file/view/f-bluecrystal.png/347317896/f-bluecrystal.png Blue Crystal]] in [[https://twitter.com/yuukiss/status/742914481726988289 his promotions for Nostalogic]], therefore making them official outfits for the song.
* CatGirl:
** The Kitty Cat Module. Notably, for it's appearance in ''F 2nd'', the ears and tail are constantly twitching and moving.
** This same trait is shared by other costumes, like Meiko's [[VideoGame/ShiningHearts Lin Xiao-Mei]] costume, which have ears and tails. Previous games kept any tail parts static.
** Miku and Meiko's "Koneko no Paya Paya" outfits in ''Mirai DX''. It's literally half the point of the song, even.
* CelebrityParadox: Averted In F 2nd. Among the items unlockable using the Extra AR mode are room items which include, of all things, ''Project Diva'', ''Project Diva 2nd'', ''Project Diva extend'' and both ''Project Diva f'' and ''Project Diva F'', as well as a advertising stand-up Miku for the ''Miku Graphy Collection'', and one of the Gadgets is a genuine ''Project Diva Arcade'' cabinet. Notably, ''Project Diva F 2nd'' itself cannot appear in the game.
** Humorously parodied by one of the first modules in Project Diva. The module "[=Ha2ne=] Miku" is Miku if she never even became a pop idol!
* ChessMotifs: The "Ultimate" modules in ''X'' are based off of chess pieces[[labelnote:*]]Miku=king, Rin=bishop, Len=knight, Luka=queen, Kaito=rook, Meiko=pawn[[/labelnote]].
* ClassyCane:
** "Dream-Eating Monochrome Baku" gives the player character one, with Len being the default.
** "Miracle Paint" in ''F 2nd'' gives the player one. Notably, every other version of the song did not have this and merely had the dancer making movements that pretended that it was there.
* {{Cloudcuckoolander}}: Vocaloids wearing Quirky/Chaos modules in ''X'' toe the line between this and NightmareFuelStationAttendant, exhibiting rather...''odd'' behavior in a nasal, high-pitched voice.
* ClothesMakeTheManiac: ''X'' categorizes modules into the five Auras (Neutral, Cute, Cool, Elegant, and Quirky), which causes the Vocaloid to change personalities accordingly into exhibiting [[{{Flanderization}} flanderized]] versions of that trait (how exactly depends on the character; for instance, Cool Miku simply becomes more assertive and aggressive while Cool Kaito is borderline [[ItsAllAboutMe narcissist]]). This is hardly considered a ''bad'' thing in-universe, since the characters approach this aspect of it with interest and enthusiasm, but can get rather disturbing for the player (especially considering that Quirky characters hardly seem ''sane'')...
* ColourCodedForYourConvenience:
** The colors of the melody icons are obviously the UsefulNotes/PlayStation symbols' colors. Wide Notes are filled with colors to prevent blending with other types of icons, Hold Notes are bordered with a white outline, and Scratch Notes are yellow. In ''Arcade'' and ''Future Tone'', Slide Notes are orange.
** And of course, the difficulties are in [=PlayStation=] colors as well: Green "Easy", Blue "Normal", Pink "Hard", Red "Extreme".
** ''Mirai'', being on the 3DS, trades the signature [=PlayStation=] colors for an alternate scheme based on the New 3DS's buttons. (Though thankfully included an option to change the colors to match the Playstation's [[DamnYouMuscleMemory for players who were used to Diva and were having difficulty adjusting]].)
** Also used as LeaningOnTheFourthWall in ''F'''s "Acute"; harder difficulties tend to sync the notes to the signature color of the character who's singing. When Miku sings, Triangles appear, when Luka sings, Squares appear, and when Kaito sings, [=Xs=] appear.
*** {=ColorfulXMelody=} in F 2nd does this as well, with Miku's part being Triangle and Circle, and Rin's part being Square and X. At least, until they start singing together...
*** Something similar is used for ''Mirai'''s "on the rocks" wherein Meiko's parts are played with A (red) and Y while Kaito's parts are played with X (blue) and B.
** The Elements in ''X'' are done this way. Neutral/Classic is Miku-esque cyan, Cute is [[PinkIsFeminine pink]], Beauty/Elegant is violet, Cool is blue, and Chaos/Quirky is a mix of orange and green. The respective stages for the Medleys are also dyed and hued in their associated colors, except for the Chaos Medley. The Ultimate Medley is color-coded as whites with rainbows, representing the amalgamation of the five Elements.
* ColorCodedCharacters: Each character has a particular color they're associated with. In "Aku no Musume/Meshitukai" in ''Mirai DX'', this is also used to represent who is who.
** Miku = Cyan [[labelnote:*]]Formerly Green[[/labelnote]]
** Rin and Len = Yellow
** Len = Orange [[labelnote:*]]Specific Character Color[[/labelnote]]
** Luka = Pink
** KAITO = Blue
** MEIKO = Red
*** Sakine Meiko = Orange
** Haku = Purple/ White [[labelnote:*]]Haku's name can be translated as 'White'[[/labelnote]]
** Neru = Yellow
** Teto = Red
** Gumi = Green [[labelnote:*]]Only in Mirai[[/labelnote]]
* ConsoleCameo:
** The music video for "Remote Controller" has a Dreamcast controller as one of the controllers. The color of the controller's logo depends on region, just like the original Dreamcast.
** A loading screen for ''F 2nd'' features a CallBack to "Remote Controller", this time featuring the Famicom controller that appeared in the original PV as opposed to ''F'''s.
** Handheld consoles that [[ShoddyKnockoffProduct look suspiciously]] like the UsefulNotes/PSVita appear in a few songs and some loading screens. For example, "Negiposi*Continues" uses a console that looks like a white Vita, but all of the buttons are completely wrong.
* ContemplateOurNavels: The lyrics of "DYE" from '''', in that distinctly Engrishy way.
* CoverVersion: ''Quirky Medley - Giga Remix'' uses a Giga-P cover of "1 2 Fanclub" with Miku and Len as opposed to the original, which used GUMI, [[ExecutiveMeddling which is the version used in the Project Mirai series...]]
** ''mirai'' has this as a feature, where swapping out the lead Vocaloid will play a cover of the current song using the selected Vocaloid. For example, changing the lead to Rin in "Mousou Sketch" will play a Rin version of the song instead.
** Future Tone has a cover version of Senbonzakura, where all six featured Vocaloids sing their portions of the song.
* CreditsMedley: The song playing during the credits sequence of ''F'', ''F 2nd'' and ''X'' is a medley of instrumental versions of some of the game songs.
* CreepyDoll: Present in "Ashes to Ashes" in F.
* {{Crossover}}: ''2nd'' received some collaboration DLC with Namco's ''VideoGame/TheIdolmaster'', which included Modules for Miku, Rin, and Luka based on three of the game's characters, as well as two songs from that game redone with the Vocaloids. This coincided with the release of ''Project DIVA'' DLC for ''[=Idolm@ster=] 2''.
** And we do not go into the modules, as well as some songs, which reference ''VideoGame/SeventhDragon'', ''VideoGame/ValkyriaChronicles'', ''VideoGame/PuyoPuyo'', ''VideoGame/VirtuaFighter'', ''Franchise/SonicTheHedgehog'', ''Franchise/PhantasyStar'', ''VideoGame/VirtualOn''... and keep being added to with every new release.
** ''VideoGame/Persona4DancingAllNight'' featured Hatsune Miku collaboration content, which gladly returned the favor by featuring her costume from that game in ''X'', ''Arcade'', and ''Future Tone''.
* CrucifiedHeroShot:
** The player character in "Black★Rock Shooter". They get better.
** The player character strikes this pose at the end of "Break It, Break It."
* CuteMute:
** Teto, due to being owned by TWINDRILL instead of Crypton. In some games, Haku and Neru are also mute except when you clear a stage, and most of the games have no songs for them at all.
** Averted with Gumi in her guest role in ''Project Mirai 2'' and ''Project Mirai DX'', where she features prominently in several songs.
* DamnYouMuscleMemory:
** Players who played later games going back to the first game will likely get a few "Worst" notes because they were trying to use the D-Pad to hit them. You can't do that, here.
** If you played too much F [=2nd=] on the Vita with analog sticks as Scratches, see if you can finish any Hard/Extreme songs in F without touching the stick.
*** On the flipside, Scratch notes were very forgiving, being able to be done by simply flicking the stick/swiping the screen constantly on F - they couldn't be hit with the "safe" designation, meaning you just had to hit them in a reasonable area of their appearance to be given a "fine". F 2nd now actually requires you to properly hit the note to get a "fine/good" or "cool", making it much harder to complete Technical Zones or get a Perfect.
** ''DIVA Arcade'' uses a button layout consisting of four buttons in a horizontal line, rather than the two sets of diamonds used by the console and handheld games. Anyone used to the latter, especially someone coming off playing on one of the limited edition arcade-style controllers, will be in for a rude awakening when they attempt ''Arcade''.
*** As a result, Project Diva Future Tone on PS4 allows you to remap the entire controller to recreate the 'horizontal line' play style, or use the standard control style.
** Going directly from a very fast (or even average paced) song, to a slower song, such as ''Sakura Rain'', can really throw off a player when their still trying to hit buttons at a speed that's twice the speed of the current song.
** ''Mirai DX'' avoids this. The notes are colored to match the buttons on a New 3DS, but there is an option to have them match the [=PlayStation=] button colors. Even then, having the 'X' button be the top button instead of the bottom can still be confusing.
** ''Mirai'' is significantly more lenient with button timing than ''DIVA'', to the point where the kind of timing that nets a FINE in ''DIVA'' is still a COOL in ''Mirai'', and so forth. This can be detrimental if you play ''DIVA'' right after playing ''Mirai'', which may screw up all your timing because ''DIVA'' is much harsher when it comes to grading.
** ''Mirai'' also doesn't require Holds, much like ''Arcade''. Hold Notes only care about two things: hitting the note at the start, and releasing it at the end. Between then, you're free to release the button, since holding only earns some bonus points.
** Have fun playing some of the charts in ''F [=2nd=]'' or ''X'' if you're too used to their original incarnations in an earlier game; some of them change just a few notes, which can throw you off especially on Extreme charts.
* DealWithTheDevil: Of a sorts in Dream-Eating Monochrome Baku. Len, a baku (read: dream-eating spirit), makes a contract with a girl to eat all of her bad dreams. After he finishes eating her bad dreams, he continues eating her dreams until the girl can't dream anymore.
* DeliberatelyMonochrome:
** In "Kagerou Daze", any version of the song beyond Normal only uses Circle and X[[labelnote:*]]Obligatory Scratch Notes notwithstanding[[/labelnote]], even on Extreme difficulty. This is a reference to the original PV, which only ever used the colors red and blue; everything else was DeliberatelyMonochrome.
** A similar thing happens with "Aku no Musume" and "Aku no Meshitukai", where the characters are rendered as just black figures with the hair and clothes of the character, except for the singer themselves.
* DemotedToExtra: Very strangely, the opening for ''X'' gives everyone not named "Miku" this treatment; their total ''combined'' screentime can be approximated to '''seven seconds.''' The opening is a minute and thirty seconds long. For the record, this also largely applies to the game itself.
* DevelopersForesight:
** There are several songs in the F series, and in ''X'', where, even though a character may not appear as a selectable module, s/he will still appear in the song. If you select a Vocaloid other than the default, the default character will replace the selected one within the song. The default character will be wearing the appropriate outfit for the song too, if the character they replace had a special outfit (like with "Senbonzakura"). Taken to another level in "Rin-chan Now!", where the selected character's name and color appears correctly on their Twitter-like feed, and "Hello Worker," which displays the correct name and portrait on their resume, even for Neru, Haku, Teto, and Sakine Meiko.
** In "God-Tier Tune," if you select a Kaito or Meiko module, they'll still have a super-deformed model to replace Miku's, despite not appearing in the song otherwise.
** If you try to equip a head or face customization item on a module that normally wears a hat or mask, the hat or mask will disappear so the customization item doesn't clip through it, even if you can't normally get a hatless or maskless alt version of that module.
*** Future Tone and X expand on that, allowing you to outright remove 'Exclusive' Accessories, as if they were seperate items.
* DifficultyByRegion: Downplayed; the first Technical Zone in ''F 2nd'''s "Cantarella ~grace edition~" is ten notes longer in localized versions for no apparent reason. It's possible this is simply a mistake.
* DifficultySpike: ''Puyo Puyo! 39'' in ''Mirai DX'' can be quite easily cheesed for the first couple stages; creating a Chain higher than three is usually not needed. Then you hit the fourth opponent, who will send your run down the toilet if you aren't actually ''good'' at the game.
** Anyone moving from the normal console games to ''Future Tone'' on PS4 will be punished hard, since even Easy can't be completed with one button. [[note]]On Project Diva, an Easy song just uses one button, usually Circle, with F and F 2nd adding the Star Note which uses the stick. All difficulties on the Arcade version note maps potentially use all four buttons and optionally Slide Notes. Higher difficulties just change how MANY buttons you press at once.[[/note]]
* DisproportionateRetribution: The Daughter of Evil in ''Mirai DX'' finds out that the Prince of Blue is in love with a a girl from the Green Country. So what does she do? [[spoiler:She destroys '''an entire kingdom.''' '''''Overnight.''''']]
** WordOfGod says that she failed to get to the girl, so she sends her servant to make sure the job is done. He is unable to do so and tries to save her, but she gets killed anyway.
* DoesThisRemindYouOfAnything: "Holy Lance Explosion Boy" uses quite a bit of pelvic thrust moves in its routine. The camera even zooms in on the player character's crotch at one point.
** Averted, kind of - the default character, Len, is constantly pelvic thrusting as a result of SEGA trying to make him manly.
* DolledUpInstallment: ''Miracle Girls Festival'' might as well be another ''Project DIVA'' game if you took out all of the Vocaloid content and replaced it with anime content instead.
* DoubleUnlock: Most of the games use a currency system, which allows you to buy items for your Divas, but you must first unlock them by completing a particular GuideDangIt task. Retired in ''X'', which shifts to completing Quests and Chance Time in Live Quest Mode to unlock Modules, Accessories and Presents, as well as outright gifting you items for getting 100% on a song.
** Future Tone subverts the latter, by only requiring the song pack to be downloaded, but retains the Arcade version's Vocaloid Point system, so you don't get them literally free.
* DownerBeginning: The opening for ''X'' is a lot less cheery than the opening of any other ''DIVA'' game, featuring scenes such as the Cloud Prisms losing their power, causing the Vocaloids to lose their strength in return, as well as Miku nearly giving up hope until Ultimate Miku comes to her rescue.
* DownerEnding: The regular ending of the "Hello, Planet" subgame in ''2nd'', if you fail to [[spoiler:acquire the Orb and take it to the secret exit in Level 4.]] This results in the normal ending as seen in the original song, where Miku is reunited with the boy in heaven, but has passed away.
* DownloadableContent:
** ''2nd'' had an ''enormous'' amount of DLC, including character birthday packages, two minigames, new songs, Modules, and ''VideoGame/TheIdolmaster'' {{Crossover}} content. Thankfully, ''extend'' came with all of it right out of the box.
** From ''[=2nd=]'' onwards, Yowane Haku, Akita Neru and Kasane Teto are available as bonus characters, with one or all of them included in the DLC packs available each game, if not the game itself. From ''F'' onwards, a Mikudayo suit was also made available for purchase in non-console versions.
** ''F'' included a package of brand new songs previously unseen in the main series, such as "Senbonzakura", "Rin-Chan Now!", "Dream-Eating Monochrome Baku", and the Mikudayo hat. The console release included these as default content, [[AntiFrustrationFeatures although they are optional and not tied to any non-DLC content.]]
** ''F 2nd'' also brought back numerous songs such as "Electric Angel", "magnet", "Sekiranun Graffiti", and "Look This Way, Baby" as DLC. [[RegionalBonus There were even some special DLC promotions initally only available in the localized version.]]
** ''X'' includes the typical fare, including two new songs, a Haku/Neru/Teto bundle, extra Modules based on modules released while the game was in development, and Mikudayo. There are also [[RevenueEnhancingDevices Unlock Keys and Unlock Sets]] exclusive to this game due to the staggering amount of unlockable content it has to offer.
** ''Future Tone'' comes with two versions: ''Future Tone'', a retail edition that includes all of the content, or ''Future Tone Prelude'', a free-to-play starter demo that can be extended into full games by purchasing separate ''Future Sound'' and ''Colorful Tone'' DLC packs that sell for [[ArcNumber ¥3900]] each.
*** ...however, with some outfits like [[Persona4DancingAllNight P4D Style]] Miku and Snow Miku 2016, which ARE Downloadable Content on X, they're included automatically within either Future Sound or Colorful Tone.
*** This also extends to Haku, Teto and Neru, who all appear in Future Tone Prelude, making it the first game where Teto is NOT paid DLC.[[note]]Teto is unlocked in the original PSP games by owning the Teto DLC key, which was later patched out when the DLC was almost all taken offline.[[/note]]
*** This however is subverted with the Additional Song Packs, which are songs released after the cutoff date, which are 1500 yen indiviually, or [[ArcNumber 3900 yen]] altogether.
** The music video for "The MMORPG Addict's Anthem" takes place at [[VideoGame/PhantasyStarOnline2 the ARKS Shop Area Stage]]. If you succeed at Chance Time, Miku is depicted acquiring a Rare Item, which the PV displays as the Rappy Wedding Cake Room Item[[labelnote:*]]Fun fact: [[ArtisticLicense Rare Room Items cannot naturally drop.]] In ''[=PSO2=]'', Room Items can only have a natural maximum rarity of 6★, just one short of Rare. Actual Rare Room Items are only obtained from special promotions.[[/labelnote]]. Afterwards, this item is made available in the shop for purchase. Notably, this is one of the few items that can still be unlocked even if the song is completed on Easy, since Miku [[PaintingTheMedium unlocked it within the song.]]
** While the song "Black★Rock Shooter" was an original song that inspired the [[Anime/BlackRockShooter anime of the same name]], the version used in ''F'' is the one from the anime as opposed to the original, and the PV used features set pieces inspired by the anime.
** The Song "Tell Your World" was originally created for Google to advertise how Hatsune Miku has become a worldwide phenomeon. In the first Project Diva game to come to the West, the song is included. Say it with me. A song made to advertise Miku's popularity worldwide, where she sings of how she wants to sing to everyone, is included in Miku's first worldwide game release, and also appears as Live Mode DLC for the second, with a translation that makes it impossible not to feel you're part of something special.
** The Module "CA Style A" in ''X'' gives Miku a stewardess outfit. It can be acquired from a product code distributed by Japanese airline AIR DO, or by purchasing the game during the first month.
* DubNameChange: Tends to flip-flop between doing this or not:
** A handful of song names in ''F'' got more liberal translations that were different from more literal fan-established one. "Torinoko City"[[note]]Typically fan-translated as "Left-Behind City"[[/note]] became "Urbandonment", and "Netgame Addicts Sprechchor"[[note]]which was already its official English title according to the Japanese version, no less[[/note]] became "The MMORPG Addict's Anthem", to name a couple.[[note]]Justified in the sequel with the song "Genga Spoofing". The easy translation would be "[[Franchise/POKeMON Gengar]] Spoofing", but, obviously, with this being a SEGA game on a Sony console, it became "[[PunnyName Doubleganger]]".[[/note]]
** In ''Mirai DX'', most titles are left [[TooLongDidntDub completely untranslated.]] The end result is that some titles can be a mouthful for an English speaker not learned in Japanese pronunciation, such as Arifureta Sekai Seifuku (Common World Domination) or Gaikotsu Gakudan to Riria (Skeleton Orchestra and Lilia). Also averted with the ''Puyo Puyo! 39'' minigame, rather surprisingly.[[note]]In any localization of ''VideoGame/PuyoPuyo'' that wasn't a DolledUpInstallment, the franchise was always called ''Puyo Pop'' prior to ''Mirai DX''.[[note]]
** Some songs also manage to escape this process for the sake of not sounding awkward in English. In these cases, the Japanese title more or less remains intact. For example, the song "Sekiranun Graffiti", which is rarely, but usually English-translated into the strange-sounding "Cumulonimbus Graffiti", is simply "Sekiranun Graffiti" in ''F 2nd''. Other examples include Tengaku[[note]]Rarely translated as "Sounds/Music of Heaven[[/note]], "Kagerou Daze"[[note]]Sometimes translated into Heat-Haze Daze[[/note]], "Akatsuki Arrival"[[note]]Sometimes "Daybreak Arrival"[[/note]], and oddly, "Roshin Yuukai"[[note]]Commonly translated into "Meltdown", which is not only the widely-accepted translation, but it's also official[[/note]].
** In ''X'', Areas became "Clouds", Neutral became "Classic", Beauty became "Elegant", and Chaos became ''"Quirky"''. Live Edit Mode also became "Concert Editor" to better reflect what the mode actually does.
* DuetBonding: "World's End Dancehall" from '''' has Miku and Luka facing off in a heated dance battle, only for them to hit it off at the end when they realise the crowd loves it.
* DummiedOut:
** In Japanese versions, ''F'' had a special DLC track that was "Popipo" from previous games, but with the addition of Playstation mascots Toro and Kuro as Miku's backup dancers. This is the only song to not have made it outside Japan, thus rendering it lost for international players.
** The demo versions of ''Project Diva'', prior to X, removed the ability to unlock anything, instead gifting you with the modules immediately. ''Project Diva X'' subverts this with the new unlocks system being included virtually intact.
** ''Project Mirai DX'' includes a few remnants of songs that didn't make it in: a 3D model of the stage from "Change Me" and the logo for "[=StargazeR=]".
* EarlyInstallmentWeirdness:
** ''Project DIVA'' has a whole laundry list of quirks that were excluded by ''2nd''. These include:
*** Score-based success. ''2nd'' swapped this for different system based on COOL/FINE notes hit, which was later expanded upon with additional mechanics. The only games to revive this system are ''Arcade'' and ''X''.
*** Very few "story" [=PVs=], a hallmark of the series that became more abundant in ''2nd'' and gave many songs more identity. Some [=PVs=] weren't even dances and were simply slideshows.
*** ''X'' however takes this [[UpToEleven up to eleven]] by having no story [=PVs=] whatsoever!
*** Hold and Wide Notes didn't exist. These were added in ''2nd''.
*** The D-pad could not be used to hit normal notes, which is a punch in the gut for left-handed players.
*** Hard was the highest difficulty. Extreme, the series' most iconic difficulty, only came about in ''2nd''.
*** Songs were divided into different categories. The first song in each category was unlocked from the start, and to unlock every song, you had to complete each category individually. While this mechanic wasn't completely removed for future games for sake of having more starting tracks, future games dropped the categories and simply put songs into different sets that would unlock new songs within the same set if the song before it was completed. The only game to renew this mechanic in its entirety is ''X'', which dubs the categories "Element Clouds", and further categorizes songs by assigning them an Element.
*** Only Miku had a Room. This was diversified in ''2nd'', which renamed "Miku's Room" into "DIVA Room" and gave every Vocaloid their own Rooms. The Rooms were consolidated back into one in ''X''.
*** [[ArsonMurderAndJaywalking The main game was known as "Free Play". This was later renamed to "Rhythm Game".]] ''X'' brought back the term "Free Play", but now uses it to distinguish itself from "Live Quest"; while the latter uses a new set of progression-based mechanics, Free Play Mode plays much closer to older installments.
*** Many of the songs are simply repeats of the same song sung by a different Vocaloid, and the majority of songs were done by one of four composers who make up almost the entirety of the song's setlist; later games make an effort to include a much larger variety of composers.
** The first ''Project Mirai'' game is different from 2 and ''Deluxe''. Instead of the notes being set along a "string" with a cursor passing over them, they are arranged around "clocks" that appear over the screen, and you have to press the corresponding button when the clock's hand passes over the note.
** The original ''mirai'' recycled a ton of the original Nico Nico Douga and [=YouTube=] [=PVs=] for its music videos. ''2'' replaced a lot of them with in-engine movies, and ''DX'' replaced the remaining set. The videos for ''yumeyume'' and ''Happy Synthesizer'' can still be viewed from the options menu, however.
** ''Arcade'' was the first game to include Senbonzakura before ''F'' added it as DLC; the version initially used in ''Arcade'' is the only song in the entire game to recycle a Nico Nico Douga PV.
* EarnYourFun: To unlock a song's Hard chart, you have to clear its Normal chart first. To unlock the Extreme chart, you need to clear the Hard chart first.
** Project Diva Arcade and Future Tone are even more cruel. Hard mode is unlocked already, and some songs don't have [[TheEasyWayOrTheHardWay Easy ''OR'' Normal]], but they do sometimes have [[UpToEleven EXTRA EXTREME...]]
** Slightly averted in ''X.'' Although you don't unlock any higher difficulties in Cloud/Event Request until you've fully restored each cloud, they are all automatically unlocked in free play.
* EarnYourHappyEnding: The secret ending of the "Hello, Planet" DLC subgame in ''2nd''. [[spoiler:Using the potted plant will make Miku water it, causing a counter above it to increase in increments. When reaches 50, it will dispense an orb. This allows you to access the secret exit located behind the regular one in Level 4. This takes you to a secret Level 5, and if you complete it alive, Miku makes it to the boy's grave intact, but trips, falls flat on her face and drops the potted plant, causing the pot to shatter. This causes an angel to appear, who summons the corpse of Miku's master to her. Miku, with the power of the orb and seven rainbow melodies, then begins to sing a slower reprise of the chorus of "Hello, Planet", which causes her deceased master to come BackFromTheDead. The credits then shows the two regrowing the Earth's plants together.]]
* EasterEgg:
** When you pass the Extra Mode AR marker scan over an image of the box art of any of the first five games on ''F 2nd'', the game scans it, and creates a BlandNameProduct version of all five games as items you can put in the room.
** In the ''mirai'' series, Miku can obtain an [[VideoGame/PuyoPuyo Arle Nadja]] outfit. If you then start up ''Puyo Puyo! 39'' while Miku is wearing it, her voice clips and animations will be based off of Arle, including her spell names, as well as her combo bursts.
** In ''mirai'', put a Vocaloid to sleep, and wait for a while. Given enough time, they will eventually start doing things in their sleep, such as sleepwalking, rolling out of their bed, tossing and turning, and sleep''dancing''.
** In ''mirai'''s tune synthesizer, setting the audio type to Vocal and holding a single note for an extended period of time will cause your Vocaloid to begin audibly straining their voice, then running out of breath.
* EasyModeMockery: Playing on the Easy difficulty in ''F'' and ''F 2nd'' prevents you from unlocking the Hard versions of songs, and some modules and items. Additionally, if you choose to use a help item, the rank shown will have a green heart beside it. Some help items go further and automatically give you the CHEAP/LOUSY/SO CLOSE rating regardless of performance, preventing you from unlocking new songs.
** One of the cheapest, in gaming terms, help items was removed for ''F 2nd'', which allowed you to, on any difficulty, play it with only the basic note types of Easy Mode.
* {{Engrish}}: As the Vocaloid 3 modules were only finished a few weeks before the release of ''Project Diva F'' in English, all the songs but one are only translated in that Romanji is used on the karaoke bar. Also, All the Vocaloids, when, as of recent updates, all of them have a english voice bank, still use the original engrish victory announcements. Several fans of Project Diva have took it upon themselves to remix, using the Vocaloid 3 English voicebank, several of the songs from ''Project Diva F'' and have so far shown almost half the songs sound just as good, if not better, in english!
** This is slightly averted by the song 'DYE', in that the song is mostly sung in awkward English.
** The lack of English is averted, in a very cute fashion, in ''F 2nd''. Luka uses the english Yankee Doodle chant for the new minigame, in all regions, purely since she's always spoken passable English!
*** Then averted even more in a shocking move, as SEGA announced that the subtitles now have an option on all but ONE song to translate faithfully the lyrics into full English, approved by Crypton and the original composers, for the western release!
** The most stunning development comes from Project Diva X including the Miku Expo 2014 version of ''Sharing The World'', which was one of the beta tracks for Miku V3 English. This means. for the first time ever, Miku uses English on a Project Diva title.
* EverythingTryingToKillYou: The PV for "Kagerou Daze". Speeding truck? Discarded liquor bottle? Steel pipes from said truck? Car crash? Slippery staircase? ''Conveniently broken bridge railing that falls apart when someone leans on it?''
* ExactWords: Invoked in a very unique way with "[=SPiCA=] 39's Giving Day Edition". It's literally a live band recording of [=SPiCA=], the band being Miku's own house band, from one of the 39's Giving Day concerts, complete with the concert's stage, applause and Miku signing off at the end with a 'Thank you' to the fans.
** This is taken to a frankly ridiculous level with the Project Diva Arcade version, where the graphics quality is so good, you can actually just about see the walls of the the auditorium where she's supposedly singing. The only thing missing with this version is The 39's themselves.
* ExcusePlot: ''X'''s plot is little more than an excuse for the Vocaloids to sing, with little, unconnected events happening in each cloud. Which is odd, since it was heavily advertised in the US before its release.
* FakeDifficulty: Quite a few examples. Even if you know a song by heart, some song charts practically require the player to be familiar with them to not slip up on its notes.
** Any song with a PV with a lot of colorful movement going around in the background, making it more difficult than it should be for the targets and incoming beats to be seen. ''2D Dream Fever'' is infamous for this; in addition to a particularly nauseating color scheme, the PV often switches between pitch black on 80% of the screen and a color explosion.
** Songs with extended endings. A particularly evil example happens with ''World's End Umbrella'' just after the Chance Time star. The title card appears, the song goes completely dead, as if the song is over. [=PSP=] veterans would put the controller down and consider the song over, and that they missed some notes when in actuality, it's a fake ending, and, on Extreme, they'll miss several notes anyway! ''Aku no Meshitukai'' also does this, although it's easier to catch because the 3DS's bottom screen tells you the song's duration.
** Overlapping notes. One egregious example is in ''Luka Luka Night Fever'' in F 2nd. On Normal/Hard, the "Lu-ka Lu-ka" (Night Fever) parts of the song are overlapping A-B-A-B notes (e.g. square-X-square-X). A little sneaky at first, but entirely manageable after the first instance or so. On Extreme, this trend continues, with the slight twist of making the B-notes doubles instead of singles... until you get to Chance Time, where the notes randomly switch to an A-B-B-A format instead. While still overlapping. Completely out of nowhere. FakeDifficulty at its finest.
** In F 2nd, gimmicky linked star notes. It's not really clear how fast you need to flick a sequence of linked star notes until you experience it for yourself. One of the best examples is in F 2nd's ''Knife'', which has a simple two-linked-star note sequence, symbolizing a sword slash. There's a fairly long line in between the two notes, but the star travels along the line blindingly fast, so you actually have to flick twice in rapid succession, and not with a pause in between as the line between them would have you expect.
** Adding to the above, there's also linked star notes that overlap. Thankfully, since you're just flicking either way and these usually still follow the beat of the song, combined with the fact that the timing on star notes is more relaxed than regular notes, these usually aren't too bad.
** A lot of these are lampshaded in the Extreme version of the tutorial song, ''Ievan Polkka''.
** In the ''Mirai'' spin-off series, notes appear along a line that meanders around the screen to the general mood of the song rather than all over the screen, which alleviates most of the fake difficulty, but not all. In some songs, such as "Piano x Forte x Scandal," the line will frequently turn very sharp corners with notes on either side, making it difficult to visually gauge the timing, and in many songs, the line will often go off the edge of the screen while notes are spawning on it, giving the player very little time to react when the screen catches up.
** ''X'''s "Urotander, Underhanded Rangers" is ''the embodiment'' of this trope, [[MeaningfulName true to the song's title.]] The ''fifth'' note is a Scratch Note flying at sonic speed without warning, and it only gets worse from there. Overlapping notes that are the same ''and'' different? Notes spaced so far apart you can't tell that they're consecutive? Notes deliberately placed along the edge of the screen, then arrive from the same edge? Notes coming from multiple sides at the same time with little warning? Speed manipulation? It's like a bad nightmare, multiplied by ten.
* FakeLongevity:
** To unlock a song's Hard chart, you have to play its Normal chart first. To unlock its Extreme chart, you have to play its Hard chart. This quickly becomes a hassle if you've played other games in the series and can get [=PERFECTs=] on Extreme charts, because you're forced to play through charts you are far more than capable of clearing just to get to the challenging charts.
*** ''X'' averts this to a degree. Although only easy and normal difficulties can be played until you've completed the "The Third Festival" event request after fully restoring each cloud, those that jump straight into free play will be happy to see Hard and Extreme already unlocked.
** It's worse in the original: You can only unlock the Hard chart by getting a [=GREAT=] rating. If you only get a standard, guess who's going another round.
** Unlocking 100% of the Modules in the original PSP game requires clearing all of the songs sung by Miku (32 of the 36) and getting either 5 Normals or 1 Great ''per character''! This also has to be done six times, using a character's original module for each run, making it almost a waste to use any of Miku's other costumes.
** ''F 2nd'' restores this aspect somewhat with the Information Board challenges, which include cumulative score or note totals. Notably, some of the challenges are to get NO notes of one of the types. Most of them aren't any worse than having to clear a song 5 times or play it once on each difficulty, but a few in particular require double-digit clears while "I'll Miku-Miku You (Forreals!)" has one that requires a ''minimum of 20(!)'' clears.
** ''X'' features over 300 Modules, including both original and ''F'' series outfits. There's no Shop anymore. You can unlock exactly ''one'' Module for every song you play.[[note]]There is also no OldSaveBonus feature, only a Cloud Import feature for owners of the JP version, which prevents you from simply unlocking 4/5 of the Modules right away.[[/note]] Not to mention Accessories, which you can unlock a handful of per song, depending on how much bonus Voltage you accumulate [[RevenueEnhancingDevices There is DLC for this to make this far less of a hassle.]] And to unlock all the crystals that lift all of the drop requirements, you'll have to be playing every song at least ''eight times''.
*** It gets even worse when it comes to the gift items: Each and every one of them RandomlyDrops at the end of a song and between 2-5 can be earned depending on the difficulty. Some items multiple room events related to them but just trying to get 1 of said item can result in play the same song over and over and over again.
** ''X'' also made maxing out everyone's friendships much longer by adding more levels and requiring literally hundreds of gifts given to each character.
* {{Fanservice}}: Every game is obligated to have one song that features the lead girls in swimsuits, such as "Summer Idol" from F. [[NintendoHard Doesn't stop those songs from being difficult, though.]]
* FinalBoss: Each game has a song considered this, although it's not necessarily the last unlockable track.
** ''DIVA'' didn't have one, due to [[EarlyInstallmentWeirdness the non-linear way the tracks were unlocked.]] "The Disappearance of Hatsune Miku" can be considered this by some, though, due to being the toughest song in the game.
** ''2nd'' had "The Intense Voice of Hatsune Miku".
** ''Extend'' also used a non-linear unlock schedule, but "The Intense Voice of Hatsune Miku" is considered this.
** ''F'' had "Sadistic.Music∞Factory".
** ''F 2nd'' had "2D Dream Fever".
** ''X'' had "The Ultimate Medley", which is [[BossRush all of the above]] [[OhCrap in one track]], plus "Two-Sided Lovers".
** ''Future Tone'' had the 10★ Survival Course, which is similar to X's Ultimate Medley, but replacing "Sadistic.Music∞Factory" with "Negi*Posi Continues", and including the [[UptoEleven Extra Extreme]] version of "The Disappearance Of Hatsune Miku" which was 'only' ranked 9 at Extreme.
* FinalDeathMode: ''Future Tone'' introduces Survival Course, a mode where you play through a gauntlet of random songs with only a single life bar that carries over between tracks. You get to pick your first track, but after that, you're at the mercy of the RNG.
* FissionMailed: Obtaining the Chance Time bonus in "Sadistic.Music Factory" leads to the bad ending that involves failing to escape from the factory.
** Several Item Events have "Fail" versions where the character messes up what s/he is doing in some fashion.
* FourElementEnsemble: ''X'' introduces five auras and their respective clouds that together make up the world that the Vocaloids live in, those being Classic, Cool, Cute, Elegant, and Quirky. In gameplay, each of the clouds is inhabited by songs of that aura, and using Modules and Accessories with matching auras give you a boost to [[ScoreMultiplier Voltage Rate]].
* FreezeFrameBonus: The potted plant from "Hello, Planet" can be briefly seen in exactly two shots near the beginning of "Negaposi*Continues".
* TheFourthWallWillNotProtectYou: The entirety of the ending of "Sadistic.Music∞Factory" can be summed up as this.
* FunWithAcronyms: The "HD" in ''"Project DIVA X HD"'' doesn't stand for "high definition", it stands for ''"honki no DIVA"''.
* FunnyBackgroundEvent:
** During the video for "LOL -lots of laugh-" in ''Mirai 2'', Miku is riding a teacup ride. Briefly in the background, the rabbit leading her through the candy-filled amusement park is flailing around madly in her own teacup.
** Luka tripping over and falling on her face in Senbonzakura.
** Towards the end of "Nice to Meet You, Mr. Earthling!", the background starts displaying a bunch of images reporting on UFO sightings in all of the ''Project mirai DX'' stages.
* FunbagAirbag: Happens to Rin in one of the gallery images in ''F 2nd'' as she dives for a beach ball and ends up with her head on Miku's chest.
* GameplayAndStorySegregation
** Almost every time a Vocaloid is shown in the opening cutscenes, they are wearing their default costumes. This is subverted with ''Project Diva'', where Miku begins wearing the "[=Ha2ne=] Miku" module, later associated with the opening video, and ''Project Diva X'', where Miku is visited by herself wearing the Ultimate Miku module you earn by completing the game.
** All the cinematic music videos depict the Vocaloids doing several things, like Miku's diorama building, and in places that are not represented by Room Themes or items available in any of the games.
** Partially subverted by "The MMORPG Addict's Anthem", where the Chance Time event shows Miku winning an item for her successful concert, which is indeed unlocked for completing the song, even on the lowest difficulty, which normally unlocks only the costume.
* GameplayGrading: Being a rhythm game series, this is obviously present, though with worded grades rather than letter grades. From worst to best, they are MISS×TAKE (DROP×OUT in F's English release)[[labelnote:*]]fail to finish a song[[/labelnote]], CHEAP (LOUSY in F's English release or SO CLOSE in F 2nd and later English releases)[[labelnote:*]]finish a song but fail to get enough rank points[[/labelnote]], STANDARD, GREAT, EXCELLENT, and PERFECT.
** ''Project Mirai'' forgoes the words and simply uses RankInflation, ranging from D to SS/S+[[labelnote:*]]The latter in US regions[[/labelnote]].
* GettingCrapPastTheRadar: Really, it's amazing what kinds of songs can sneak past the radar.
** In ''Project Diva F 2nd'', we have songs which include ''very'' intimate LesYay, several different ways to kill someone, sex, (possible) suicide, Blackjack, repeated gruesome deaths, more sex, prostitution, ''borderline drug-induced rape'', and [[ArsonMurderAndJaywalking a recipe for a cocktail]], almost all of which are fully translated into English.
** ''Mirai DX'', while overall more lightheared than the main series, also has [[SarcasmMode fun]] themes like [[RunningGag sex]] ("Romeo and Cinderella"), aforementioned cocktail ("Clover Club"), beheading ([[Franchise/EvilliousChronicles "Aku no Musume" and "Aku no Meshitsukai"]]), '''flat-out genocide''', homicide, and ''incest rape'', [[TooLongDidntDub none of which (quite conveniently) is translated.]] Note that this game has a ''lower'' rating than that of the main series.
** ''X'' continues the trend by adding "[[UnusualEuphemism Holy Lance Explosion]] Boy" and "Quirky Medley - Giga Remix". For the former, the song is basically about a womanizer and littered with fairly explicit innuendo and sexual euphemisms, whereas the latter includes "Pincostique Luv", which contains very unsubtle references to masturbation, and the infamous "Gigantic O.T.N.", which is entirely (and unsubtly) about [[BiggerIsBetterInBed a certain part of his anatomy]]. Much like it's predecessor, they're also translated.
* GlobalCurrencyException: Unlike ''DIVA'', which uses the same currency across all in-game purchases, ''Mirai DX'' uses the 3DS' Play Coins for purchasing Items. While it's entirely possible to play the game without ever spending on items, three of the possible items also boost overall Mirai Point acquisition, which can make it tempting to spend on them.
* GogglesDoNothing: It's GUMI's trademark, of course. Some outfits swap out her goggles for other head accessories.
** One of the accessories in ''X'' is a pair of aviator goggles that the characters wear on their head. They're also a default part of Rin's "Burning Stone" and Len's "Lightning Stone" modules.
* GoodTimesMontage:
** The majority of "Time Machine" is a reel of the viewpoint character's memories with Miku, up until he/she has to depart and leave Miku behind.
** "Fire Flower" is also similar, as it looks back on Len's memories with Rin while Len is performing on stage for her.
* GoryDiscretionShot: In "Aku No Musume" and "Aku No Meshitsukai", when the evil princess Rin [[spoiler:(actually Len in disguise)]] is executed, there is a cut to a black screen with a falling ribbon [[OffWithHerHead as the guillotine falls]].
** Miku [[CatapultNightmare jerks awake]] an instant before each moment she'd be killed in the PV for "Kagerou Daze."
* GottaCatchEmAll: ''Arcade'' has tons of special trading cards you can collect by completing challenges, which can then be used with an online MiniGame.
* GrassIsGreener: "Negaposi*Continues". Turns out living in a video game isn't all it's cracked up to be.
* GravityIsAHarshMistress:
** ''Project Mirai DX'':
*** Justified in "Amatsu Kitsune", since Rin was attempting to use flight magic. She falls down when her spell fizzles out.
*** Played straight in "Piano Girl", where Miku is running up and down some stairs, only to not notice a shapr drop. Miku turns her head with a shocked expression before she starts falling.
* GratuitousEnglish: The original PV for "Kokoro" had a very Engrishy text scroll at its end that doesn't translate well to a native English speaker. When ''F 2nd'' redid the PV, the Japanese version got a SurprisinglyGoodEnglish revision that was retained for the international release.
* GroundhogDayLoop: Miku gets stuck in one in the "Chance Time" version of ''Kagerou Daze''.
* GuideDangIt: Averted in ''F 2nd''. A new feature adds a ''Information Board'' which tells you what unlockables you can unlock in a song, in a easy to read format. Of course, so it's not TOO easy, it only reveals them in stages.
** Also played straight in the same game's Diva Room unlocks as there are several unique items unlocked outside of the songs that are only obtained through certain numbers of various events such as visiting it daily, accepting requests and even making up with each Vocaloid after making them angry with no real way to track progress.
** In ''mirai'', non-song-related outfits and some unlocks fall straight into this category.
*** Miku's Snow Miku series of outfits. You need to place the corresponding Nendoroid in a Mirai Room.
*** Getting a particular Vocaloid's Pajamas. You need to raise a Vocaloid's Friendship to a high enough level, as well as put them to sleep for at least a certain number of hours at least once.
*** The bonus faces. Hatchune Miku requires getting all of the Miku outfits, Super KAITO requires getting all of the KAITO outfits, and Mikudayo requires getting ''all'' the outfits.
*** The game's [[LastLousyPoint very last unlockable.]] [[spoiler:To get it, you must possess every single outfit in the game and achieve maximum friendship with Miku. This unlocks the Mikudayo body and the "Otoro Cushion" Medium Room Item.]]
** Getting trophies. Every trophy in F, F 2nd and X just has the description "You earned the title *trophy name*", which is technically correct since you also unlock the title with the same name along with it, but as titles don't even show up before you earn them and the names usually don't tell you exactly what you're supposed to do... trophy hunters will want to consult Google for this.
* GuiltBasedGaming: Spend more than a week without selecting a Vocaloid as your partner in ''Project Mirai'', and they will turn around on the partner selection menu. If you select them, you will be forced to verbally apologize or repeatedly tap a button to get them to forgive you. If you stop playing for more than a week, ''every'' partner will be angry at you.
* {{Hammerspace}}: In the "Hello, Planet" game, Miku can apparently hold a ton of stuff that goes apparently nowhere, including a whole ''hot air balloon.''
* HarderThanHard: Extreme difficulty, home to some of the toughest charts in the series, like ''Negaposi*Continues'', ''Sadistic Music Factory'', and ''The Intense Voice of Hatsune Miku''.
** ''Arcade'' takes it up a notch with Extra Extreme, a bonus difficulty that includes reworked charts with Slide Notes for older songs that didn't previously have Slide Notes.
** ''Mirai DX'' introduces Super Hard difficulty, its equivalent of Extreme in the ''DIVA'' series. However, only six songs have the option, and the player must both beat the game and achieve an S Rank or higher on that song's Hard chart to unlock it.
* TheHatMakesTheMan: In ''X'', the characters behave differently depending on the attribute of the module equipped.
* HazardousWater: In "Hello, Planet", Miku's life drains when she's in rain due to being a robot, although she prevents it by picking up an umbrella partway through. In the corresponding game, rain does indeed hurt you, as well as small pits of water. After picking up the Umbrella, you can stop rain damage by equipping it, but while holding it, you can only walk. However, it also causes you to descend a half speed after a jump.
* HealingPotion: In the "Hello, Planet" game, Miku can pick up bottles of clean water. Using one restores a whole heart to your life gauge.
* HeroOfAnotherStory: [[spoiler:Yowane Haku, who makes a [[TheCameo very brief cameo]] in ''mirai'''s "Aku no Meshitukai", is a related character in the scope of the "Aku no Musume/Meshitukai" story who is an observer to all of the story's events, but not an active participant.]]
* HiddenDepths: The Vocaloids in ''Project Diva X'' have a lot to say about the world they live in, and their own troubles, like one of Miku's observations is about how she finds it difficult sometimes to adjust to a new module straight away because of her mood changing sometimes, whenever they speak to you, unlike earlier games, where the interactions were short, never subtitled, or sometimes voiced at all, and the most complex interactions were when they wanted you to change something or their friendship rating increased.
* HopeSproutsEternal: Kami Kyoku/God-Tier Tune revolves around chibi Vocaloids tending to the last plant on Earth in order to awaken Goddess Miku.
** Hello Planet. Miku is tending to the last viable plant on Earth. [[spoiler:In either ending, her faith is rewarded at the eleventh hour.]]
* HotterAndSexier: ''F'' and ''F 2nd'' bring us much more fanservice-geared songs such as [[IntercourseWithYou "Hm? Ah, Yes.",]] [[AbsoluteCleavage "Nostalogic",]] [[FemmeFatale "Blackjack",]] and "Envy Catwalk".
** An intentional example in ''extend'' as "Colorful X Melody" featuring Miku and Rin appears midway down the list, then a reprise with Luka and Meiko titled "Colorful X Sexy" appears near the end.
* IdiotHair: Several modules, though notably you can also unlock one for each of the six characters as customization items in ''F'' and ''F 2nd''.
** Future Tone tops this with several different forms of idiot hair... for literally all the Vocaloids, including Neru, Haku, Teto and Sakine Meiko.
* IntercourseWithYou: ''A lot'' of the songs. To name a few, there's "magnet", "Romeo & Cinderella", "Hm? Ah, Yes.", "Iroha Uta"...
* InterfaceScrew: Several of the challenge items mess with the notes and targets in various ways, like making them smaller or appear much later than they normally do.
* InterfaceSpoiler: Did you buy a physical copy of ''Project Mirai DX''? Don't look at the song AR cards unless you want most of the songlist spoiled for you.
* JerkassGods: The goddess of fate in "Name of the Sin" curses a girl with deformity and ugliness just for the hell of it. [[spoiler:She gets better.]]
* JigglePhysics:
** Meiko and Luka got it going on in ''''. Even the modestly-endowed Miku gets in on the action, depending on the outfit.
** The game even uses some jiggle physics on the hair of Miku, Luka, Haku and Neru, so their ponytails bob about almost realistically.
** Averted with Mikudayo, who moves like someone wearing a heavy mascot costume would.
* JumpScare: Early in the ''mirai'' video for "LOL -Lots Of Laughs-", a bunny mascot's face abruptly fills the screen with no prior warning. If you weren't expecting it and are the kind that gets spooked easily, expect it to throw off your rhythm.
* LeaningOnTheFourthWall:
** In the intro for ''Project Diva F'', the [=DX7=] synthesizer is uncovered, gathering dust, that appeared in the PSP intros, and Miku is depicted as moving on, reflecting the fact ''F'' and ''F 2nd'' are [=PS3=] and Vita games, instead of the original system of a [=PSP=] game alongside a Dreamy Theatre upscaling program.
** Expanding from this is that the first three games are portrayed as being set at a exclusive academy, while Project Diva F and F 2nd are set after they have graduated, with the iconic synthesizer absent completely from ''F 2nd''. Project Diva X meanwhile is set almost exclusively in one of the Diva Rooms, [[TheDayTheMusicDied possibly since that's the only place left...]]
*** In ''F 2nd'''s "Sakura Rain", Miku is shown walking around this academy, with several locations seen in the various intros shown prominently. To take it a notch further, the song itself is about saying goodbye after graduation, and that hopefully they'll return to meet again someday.
** One of the Gadget items for ''Project Diva F'' is the plainly named ''Project Diva Arcade Machine'', which is a genuine arcade cabinet for ''Project Diva Arcade'', which can be used to play the credits game constantly. Annoyingly, The Gadget list misnames it as 'Game Console' when selected in the Diva Room.
** The words and music for ''The Disappearance Of Hatsune Miku'' and ''Tell Your World'' are incredibly meta, the first having her sing about how she's terrified of the end of the song, and the latter having Miku singing about the fact she's on the stage right now singing for the world.
*** ''Intense Voice Of Hatsune Miku'' also has very meta lyrics, in that she outright declares that the song itself is a 'answer' song to ''Disappearance'', which talked of the end of her shelf life, declaring that she has no shelf life, as long as Vocaloid exists. Ever since its english localization, Every revision of Vocaloid has a version of Miku. Yes, Miku, You Are Alive.
** The music video for ''Sadistic Music Factory'' is about someone having escaped a tyrannical factory owner. As the song continues, it's revealed that the person she's looking for is the player themselves!
** One of the new aids given for ''The Intense Voice Of Hatsune Miku'' is that, from halfway through the song, the music video itself, if you complete Chance Time, changes to allow you to more clearly see the arrangement of the notes, purely since the notes might have changed, [[NintendoHard but the speed most definitely hasn't.]]
** Crosses into PaintingTheMedium with ''Melt'' and ''Glory 3usi9'' on Project Diva F 2nd, in that ''Melt'' has, for a Chance Time event, Miku's original module appear in front of the menu background of ''Project Diva'' on {=PSP=}, and one of the two versions of Miku begins stood in the menu system for ''Project Diva F 2nd'' itself!
* LevelGrinding: ''X'' is atrocious about this, forcing you to grind for Voltage to gather crystals, and due to the game having the shortest list of songs since the first game, be prepared to have to play the same song again. And again. And again. Depending on how good you are at getting Voltage, you may have to end up going through the entire setlist the game has to offer at least ''eight times'' before you've unlocked anything, and that's only if the RandomDrops have been working in your favor.
* LicensedGame: The ''Project DIVA'' series requires several layers of licenses. The most prominent being the usage of the characters and software themselves, including the Derivatives (sans Teto's voice, produced in UTAU) and GuestFighter GUMI, who is currently only in ''Project mirai''. The second would be the actual music, since none of the music is produced by any of the owning companies themselves, rather, aspiring fans and producers make the music, which then licensed off to be used in the series. Mind that this is ''just for the Japanese versions''; the English versions need to go through the entire process ''again.'' And then the English versions require licensing for ''English lyrics'', which was obtained for all songs in the main series starting from ''F 2nd'' except for "Kagerou Daze".
* LifeMeter: Like in many other rhythm games. However, depending on the game, clearing a song requires you not only to get to the end of the song but fulfill an extra requirement:
** In ''Project Diva'' and ''2nd,'' a certain percentage of notes must be scored as COOL or FINE.
** In ''F'', ''F 2nd,'' and ''X'''s Free Play mode, you must also score at least 80 out of a 100 grade points by hitting COOL or GOOD/FINE notes, (up to 89 points) and completely technical zones (3 points for each zone) and chance time. (5 points)
** In ''X'''s Live Quest, you must also hit a certain Voltage limit to pass.
* LighterAndSofter: The PV for "Kagerou Daze", compared to the song itself.
* LittleBitBeastly:
** Several versions of this are available in ''F'' and ''F 2nd'' including rabbit, dog, fox and cat parts, with ''F 2nd'' adding parts for a nekomata and nine-tailed fox.
** The costumes for "Animal Fortune-Telling" in ''Project Mirai 2'' and ''Deluxe'', as well as "Amatsu Kitsune". "Animal Fortune-Telling" has Miku as a koala, Luka as a sheep, Rin as a tiger, and Meiko as a Tanuki. "Amatsu Kitsune" has Rin as a fox.
* LogoJoke: The logo screen has Miku singing "Se-gaaaa!", similar to how older Sega games had the "Se-gaaaa!" yell. Later games had Rin, Len, Luka, Kaito and Meiko join in randomly. Later expanded on by having Miku sing the jingle as a chord, which better captures the original jingle.
* LoveTriangle: "Acute" from F has one between Kaito, Miku, and Luka. As if to drive the point home, the stage is even shaped like a triangle! It doesn't end well, either.
* LuckBasedMission:
** The room items in the original game are unlocked by random chance after clearing a song. Many of them require a Great but even then aren't a 100% guarantee. This was averted in F and F 2nd, where they are unlocked by simply completing the songs on NORMAL or higher.
** Getting a lot of the Mirai Room stamps more or less borders on random chance, as in, the Vocaloid actually has to ''use'' the object in question, which is completely decided by the AI. Some stamps take it a step further and require a certain ''result'' from using a specific item, which is even more luck-based than getting your Vocaloid to use it in the first place. Then there are the idle events...
** Provided you aren't great at Puyo Puyo, the fourth opponent in ''Puyo Puyo 39'' basically amounts to hoping that he/she doesn't get a three or four chain.
** F 2nd has a small handful of items that unlock when you score a specific number of note gradings (cool/fine/safe/etc). Getting these requires either good luck or superhuman precision.
* LyricalDissonance: The standard Chance Time footage for ''Kagerou Daze'' depicts a goofy video of a very strangely dressed Miku trying to get to her concert without dying somewhere along the way, where all deaths are PlayedForLaughs. The song itself tells the tragic tale of a boy stuck in a GroundhogDayLoop for decades on end while hopelessly trying to save a girl who repeatedly dies in increasingly gruesome ways.
* MaleGaze:
** Present in Meiko's song "Nostalogic" in ''Project Diva F''. The camera often locks on or swing pasts her midriff, rear, or chest.
** Made even more hilarious if you get the Chance Time for Nostalogic, which causes the camera to become glued to the player character's chest.
** Luka's "Blackjack" in ''F 2nd'' brings this back in full force. Many songs (such as "The World Is Mine") focus on a female Vocaloid's butt every now and again.
** Songs in ''mirai DX'' focus on the female characters' rears again, except they're all SuperDeformed and don't have anything to show off as a result.
* TheManyDeathsOfYou: "Kagerou Daze"'s "Chance Time" video has Miku dying in numerous different ways, including being hit by a car, crushed by steel pipes, falling down a staircase, being in a car crash, or getting crushed by stage props.
* MarathonLevel: ''mirai'' only uses full versions of songs, unlike the main series, which cuts some songs for time. This mostly sounds like a positive, until you get to tracks like "reverse rainbow" in ''Mirai DX'', which clocks in at just over five minutes, in a franchise where hitting four minutes runtime is already considered quite long.
** ''X'' introduces the Medleys, six medleys of songs by various composers, which are much longer than normal, as the final concerts in each area. The Ending Medley by legendary producer Music/CosMo takes the cake; it clocks in at just under four minutes and has a total note count of a whopping '''1047 notes''', the highest number of notes of any official chart to date.
* MeaningfulName:
** The ''mirai'' in ''Project mirai'' is a reference to the AlternateCharacterReading of "未来", which can also be pronounced "miku".
** Urotander, Underhanded Rangers is a ''Super Sentai'' parody about a group of Sentai who use dirty and cowardly tricks to win fights. True to its name, the note chart pulls off the only case of ''invoked'' FakeDifficulty in series history, including notes that come out blindingly fast while you're distracted by another note, or notes that are lined up along the edge of the screen and arrive from the same edge, making it irritatingly difficult to tell when a note begins and ends.
* MercyInvincibility: In ''Project DIVA Arcade'' and the ''Project Mirai'' series, you're granted a brief period of "safety" at the beginning of the song; your LifeMeter is restrained from falling below a certain amount until the safety wears off.
* MiniGame:
** ''F'' has Rock Paper Scissors. There's also MiniGameCredits that you can repeatedly access upon purchasing a ''Project DIVA Arcade'' machine.
** ''F 2nd'' brought back Rock Paper Scissors, and added a Patty Cake minigame. The MiniGameCredits were also brought back, but significantly tweaked to not require repeat plays.
** ''Mirai DX'' has ''Puyo Puyo! 39'', which is VideoGame/PuyoPuyo with Vocaloid characters and background music. You can also play Mikuversi with your Vocaloid partner, even if their name isn't Miku.
** ''Arcade'' has ''[=DIVAPro=]''[[note]]Short for "DIVA Production"[[/note]], an online sub-game where you collect trading cards from playing ''Arcade'', then register them and arrange them into squads so they can perform at venues and gain EXP and stats. This is currently the only purpose for the cards.
* ModestyShorts: Miku's De:MONSTAR outfit has red spats underneath the skirt, although it's barely noticeable.
* MoneyForNothing: Play the game often enough, and you'll have ''way'' more Diva Points/Mirai Points than you'll know what to do with. Somewhat subverted with the latter as well, since if you decide to move into the Penthouse or the Resort, you'll have to keep feeding the Vocaloid an extremely gratuitous value of Mirai Points per real-time week to keep staying. Also heavily averted with ''Arcade'', which dispenses Vocaloid Points at such a paltry rate that you'll have to grind for VP at least once every day if you intend on buying [[AndYourRewardIsClothes all the available outfits.]]
* MotorMouth: To varying degrees based on the song, from short spurts in "Secret Police" to constant and nigh-indecipherable in "Rin-chan Now!", "Sadistic Music Factory" and "Two-Sided Lovers". Most blatant in the infamous "Intense Voice Of Hatsune Miku" from ''2nd'', which not only features high-speed singing in long bursts, but also ''makes you [[ButtonMashing tap buttons]] at the same speed.'' It was later reintroduced in ''F 2nd'', but the difficulty was greatly reduced with a new note chart that features far fewer notes than before.
* MultipleEndings: The Bonus Events from the ''F'' series create a form of this; depending on whether or not you succeed at them, you can get alternate scenes and endings for the video. Averted in "Kagerou Daze", where the Bonus Event trigger occurs at the ''start'' of the song, and succeeding completely changes the subsequent video.
* MiniGameCredits: In ''F''[='=]s closing credits, you play as Hachune Miku, throwing leeks at the credits to score points. Amusingly, after you complete the game on NORMAL, you can buy an item that lets you play it whenever you want, and new features are unlocked as you play the credits game multiple times.
* MotionCapture: Used for PVs in games starting from ''f'' (which can make ''F 2nd'' occasionally jarring because of how some of the returning PVs aren't mocapped), allowing for more realistic and intricate dance moves.
* MythologyGag:
** In the "Hello, Planet" minigame, [[spoiler:the message that the boy finds in the [[GoldenEnding good ending]] contains the same message as was revealed in the associated PV in ''2nd''.]]
** In ''Tell Your World'', the cubes that Miku is manipulating several times, [[spoiler:and the colours of the links spreading out over the globe]] represent the Vocaloids themselves, using their character colours.
** In ''F 2nd'''s version of ''The World Is Mine'', if you score the "Chance Time" event, you get a bonus scene of a posing Miku mimicking the now-famous pose from the original video, with her lying in a chamber representing that same cover.
*** This takes on meta levels with ''Mirai'', that the song BEGINS in the chamber from the chance time event. Just before the track's bridge, the stage area transforms into the ''Project Diva'' stage area, effectively showing both stages are the same place.
** In ''Glory 3usi9'' on ''F 2nd'', the floating cube which represents the Miku spirit is Green, which is Miku's original character colour, instead of Cyan, which is Miku's modern colour, and the floating cubes which represent the other Vocaloids are depicted prominently.
** The video for ''magnet'' has a segment that mimicks the [[http://vocaloid.wikia.com/wiki/File:Magnet.jpg album cover]]. ''F 2nd'''s version adds butterflies for the final segment as its Chance Time bonus event.
** Saki Fujita is often employed as the narrator for the series' TV advertisements, a reference to her role as Miku's voice provider.
** In the opening for ''mirai 2'', the words ''MITCHIE M'' appear in the dressing room, with the same font used on his official content. This is a reference to Mitchie M, who composed "Ageage Again", the theme song of ''mirai 2''.
** In the opening for ''mirai DX'', Pinocchio-P's mascots appear as a FreezeFrameBonus. Pinocchio-P composed the theme song of ''mirai DX'', "Nice to Meet You, Mr. Earthling!".
** The [[LastLousyPoint absolutely final unlockable]] in ''mirai DX'' is [[spoiler:the Otoro Button, a giant, plush otoro sushi that appeared in the ''mirai 2/DX'' "Together with Mikudayo!" promo trailers, and is also Mikudayo's TrademarkFavoriteFood. It may make its signature "ding dong" sound when interacted with.]]
** The ending shot of "1925" involves Miku kneeling in front of a graphic that forms behind her, causing the final scene to resemble the original accompanying art for the song.
** "LOL -lots of laughs-" is the only ''mirai''-original song that also launched in the main series. However, ''X'' gives this version an alternate costume entirely unrelated to the bunny costume seen in ''mirai''; this is a reference to the original PV, which featured two Mikus in different costumes.
*** Notably, a unique back accessory for Miku's ''X'' costume is what seems like a promotional backpack of the rabbit from the ''mirai'' version.
* NameOrderConfusion: Unusually for an official localization, the English version continues to use Japanese name order for the surnamed Vocaloids (e.g. "Hatsune Miku" instead of the Western order "Miku Hatsune"). Possible reasons include Crypton's enforcement of the Japanese name order as the official name for branding reasons - as their Vocaloid products were developed prior to them knowing that the phenomenon would take off in the West, and therefore originally used the romanizations purely for stylistic effect - and the fact that the Eastern name order is simply more familiar to the fanbase that would buy the games.
* {{Nerf}}: Between ''2nd'' and ''F 2nd'', "The Intense Voice of Hatsune Miku" (Hatsune Miku no Gekishou) received a severe nerf in the sense that the abnormally long high-speed chains at the end of ''2nd''[='=]s version were replaced with a series of much shorter chains punctuated by a few spaced-out notes. The song is still difficult, but not nearly as much. It's probably because of this that in ''F 2nd'' it became the second-to-last song instead of the final, of which ''F 2nd''[='=]s is [[NintendoHard definitely no slouch]].
** Notably, "Intense Voice" has its outro on EXTREME be a 18-note Technical Zone which goes by at the same speed as the original ''Extend'' version's chains, and this one isn't one single type of note. ''X'' brings it back, but makes it easier by replacing two ButtonMashing chains with Rush Notes.
** And the Arcade version's last notes are a chain which literally has you needing to dance your hands over ''all four buttons'', with seemingly three notes at once needing to be played. Two hands, three notes. Surprisingly, some players have managed it.
* NeverSayDie: Both played straight and averted in "This is the Happiness and Peace of Mind Committee". An entire portion of the song is dedicated to Miku listing off the numerous ways she'll kill you, but the last word has been partially censored in a form of a [[LeetLingo Leet]]: "'''[)34[)'''". Same way as in the Japanese version where the kanji of that word is replaced by a circle.
* NintendoHard: Although the games have a fairly simple learning curve, the game gets to be this whenever you have to press different buttons in succession. Additionally, while many games simply have a stage clear requirement of "have this many points" or "keep your LifeMeter from hitting zero", in this series ''both'' of them are in effect, so you can make it to the end of the song but still fail it.
** Some songs are notorious for being this, especially on harder difficulties. Future Tone's Extra Extreme note charts take already difficult songs and crank the difficulty up. Thankfully, not yet done with any songs with a rating which is ALREADY 10.
* NoFairCheating:
** A lot of the stronger Help Items limit your maximum rank for a song. For example, in ''F'', Star Killer and Double Killer, which lets Scratch Notes be performed with regular buttons and removes W Notes respectively, prevent you from earning higher than a Standard. Simple Rhythm, which changes all inputs to be O[[note]]Removed in ''F 2nd''[[/note]], and Training Wheels, which turns all BAD and LOUSY into SAFE, prevents the song from being counted as complete.
** In the ''mirai'' series, Recovery[[note]]restores your health after depletion and makes it decrease more slowly[[/note]] prevents your score from being counted, as does Role Model[[note]]demonstrates a perfect play of the song[[/note]]. Averted with Auto-Spin[[note]]automatically spins rainbow notes for you[[/note]] and Special[[note]]turns one SP note into a Super SP note that yields an MP bonus[[/note]], which only increase MP rewards but not score, as well as Do Or Die[[note]]one SAFE, SAD, WORST, or Miss results in an immediate GameOver, but you get double the MP if you finish the song[[/note]] which is the opposite of an assist item anyway.
* NostalgiaLevel:
** ''F 2nd'' brings back updated versions of past songs, such as "Packaged" from the first game, "Romeo & Cinderella" and "Intense Voice Of Hatsune Miku" from the second, and "Thousand Year Solo" from ''extend''.
** This extends to the modules in the same game, with confirmation of the Nyanko and Heart Hunter modules from the PSP games, the latter being well known due to it's use with videos of the first game's rendition of "Two-Sided Lovers", which returns with the PV and module it used in ''extend''.
* NumberOfTheBeast: The EXTREME chart for "Sadistic Music Factory" in ''Arcade'' and ''Future Tone'' has exactly 666 notes.
* OddballInTheSeries: ''Arcade'' takes a few liberties from its handheld and console counterparts:
** Your success or failure is determined completely by score, like the first ''Project DIVA'' game. [[AntiFrustrationFeatures The game helps with this]] by showing you a visual guide of how many points you have compared to how many points you ''should'' have at that point to get a minimum clear.
** The buttons are arranged in a line, rather than a diamond like the signature [=PlayStation=] diamond. [[DamnYouMuscleMemory Anyone not accustomed to this button setup is advised to play on lower difficulties first to adapt to it.]]
** The [[MercyInvincibility safety mode]] at the beginning of each stage.
** The game runs at 60 frames per second instead of 30. The main series didn't hit 60 FPS until ''X'' released on Playstation 4.
*** Not that it didn't stop a arcade-perfect [=PS4=] version coming out in 2016.
** The game utilizes a graphical style more in line with ''Dreamy Theater'' than the actual ''DIVA'' series.
** Holds are no longer mandatory. Holding a hold note down simply gives you bonus points, up to 3000 per hold note if another note of the same button doesn't appear early enough to interrupt the hold.
** "Chord" notes now use different buttons. On harder difficulties, chords of 3 and 4 buttons are not uncommon.
** Normal mode actually uses all four buttons.
** There are no Technical Zones or Chance Times. This factors in to how you succeed at Chance Time mentioned below.
*** This is the only change for ''Project Diva Future Tone'', where Chance Time is restored.
** The newer revisions of the game have a version of the star note from ''F'', the Slide Note, indicated by a bar across the top of the control area that you slide one direction or another to complete the note.
** Netting the "Chance Time" ending of a song only requires you to hit the notes highlighted in rainbow; anything before that is completely irrelevant to whether you get it or not.
* OffWithHisHead: The Daughter of Evil's [[spoiler:or rather, her servant-twin-brother who looks identical to her]] ultimate fate in ''Mirai DX'''s "Aku no Musume" after a coup overthrows her as ruler. Naturally, the game uses a GoryDiscretionShot.
* OhCrap: Miku has this reaction when being invited into a haunted house in "LOL -Lots of Laughs-" in ''Mirai DX''.
* OldSaveBonus:
** Having the original game's save on your memory stick will net you all of its costumes for free, plus an exclusive DIVA Room poster and title, in the sequel. Likewise, having a ''[=2nd=]'' save will get you all of its costumes and such for ''extend''.
** Due to the console jump, ''F'' and ''X'' don't allow this. Its sequel, Possessing save data from ''F'' unlocks its Modules in ''F 2nd,'' however.
** If you happened to import the Japanese version of ''F 2nd'' to a non-Japanese region, you may convert the data to the English version once only. This doesn't work the other way around, unfortunately.
*** Project Diva X uses only one cloud server for saving ALL save data for any region, meaning that, if you own it in Japanese, when you cloud sync an English version the first time, it can find your Japanese cloud save.
* OnceAnEpisode: "Sekiranun Graffiti"'s stage is modified every game to display the logo of the game it's appearing in. This even includes the ''Dreamy Theater'' expansions.
* OnceASeason: The settings of focus for the games' openings change with every sub-series. The ''DIVA'' series opted for a very realistic "modern-day Japan" world with high school and trains. The move to the ''F'' series updated into a modern-future fusion with contemporary cafes and standard housing mixed with TronLines, hover scooters, and space elevators. ''X'' then transferred into a "world of music"-esque setting to tie into the now-existent plot, featuring concert halls and ThePowerOfRock linking worlds apart, together.
* OneGameForThePriceOfTwo: Played with; ''Future Tone'' has two DLC add-ons that, combined, make up the entirety of the ''Arcade'' tracklist. However, both games have completely different individual tracklists, and both have more songs than any ''DIVA'' game. Also, when you own both, the game morphs into one single game, with the ability to use all the modules with any song.
* OriginalGeneration: Some songs are created specifically to appear in this series. Highlight examples include all of the theme songs as well as "Nega*Posi Continues".
** Notably, the Arcade version has every single intro, even from the Mirai series, with the same modules and set pieces, but takes some artistic license with the dance sequences.
* PacifistRun: Enforced in the "Hello, Planet" game. Miku's only "weapon" is a bubble blower that shoots giant bubbles. The bubbles cannot actually kill enemies, but traps them for a few seconds, allowing you to walk past them unharmed.
* PaintingTheMedium: Many songs' note patterns are related to the theme or lyrics of the song or Miku and friends' dance moves.
** If you succeed at Chance Time in the ''F 2nd'' version of "Intense Voice", the video will flash boxes and circles across the screen corresponding to the location of notes moments before they appear, allowing the player to anticipate the notes.
** Lots of Square notes appear in "Sakura Rain", simulating pink petals falling from the cherry blossom trees.
** Clover♣Club, with all the Circle (and Triangle in some versions) notes being a reference to the title of the song.
** Several songs, as well as the intros, feature glowing cubes or elements in the colors of the Vocaloids.
* PantyShot:
** "Satisfaction" can potentially deliver this if you have certain Modules on, averting MagicSkirt during [[FreezeFrameBonus a very particular frame.]]
** This is otherwise defied during the photo modes; if the models are positioned in such a way that an upskirt shot is possible, the game simply does not show the model. This happens even with the boys or if the girls aren't wearing skirts.
* ParentalBonus: The lyrics for Clover Club in F 2nd include a recipe for the cocktail the song is named after, done in such a way that only someone aware of what Miku is saying would be able to mix one up.
%%* PinkySwear (In what instance?)
* PlayEveryDay: ''Arcade'' deposits a DIVA Ticket into your account for every day you play the game. These can be exchanged on DIVA.NET for VP packets, special items, skins, and titles.
* ThePointsMeanNothing: The ''mirai'' PV for "Hello, Planet" features a completely non-functional score system in the top left of the screen. [[ShownTheirWork This score display syncs up exactly to the one used in the original video.]]
* ProperTightsWithASkirt:
** Rin's Trad School module in ''F'' and Miku's Noble module in ''F 2nd''.
** Miku also uses tights with the [=FOnewearl=] costume just like the default [=FOnewearl=] from ''VideoGame/PhantasyStarOnline2'', when the character generator version omits them as default.
** Rin's "Astray" from ''X''.
* PunnyName: The "[=Ha2ne=] Miku" Module from ''DIVA'' and ''F 2nd'' is a play on the pronunciation of the character "tsu", which sounds similar to the English number "2". It also references how it depicts an alternate version of Miku. Note that this change is [[{{Woolseyism}} only in the English versions;]] ''DIVA'' simply called it "ハツネミク", [[LostInTranslation which uses the literal kanji for Miku's last name.]]
* RainbowPimpGear: As a result of modules and accessories having effects in ''X'', sometimes getting the best bonuses means putting normally mismatched items together, like dog ears, duck beak, and fox tail.
* RandomlyDrops: The revised Module acquisition system in ''X'' turns unlocking new Modules into this for Live Quest Mode, where succeeding at Chance Time may additionally grant you a random Module, accompanied by a TransformationSequence and [[NoticeThis a big honking on-screen display shouting "MODULE GET!".]] Certain Skills can increase the odds of a Module appearing, such as Miku's "School" Module, which comes with Rare Module UP Lv.1, a skill that slightly increases the odds of acquiring a rare Module.
* ReadingsAreOffTheScale: In ''Extend'' and ''F 2nd'', "The Intense Voice of Hatsune Miku" had the special distinction of having red stars for its difficulty scale as opposed to the normally-white stars, [[ThatOneLevel just to remind you how stupidly difficult it is.]] In ''F 2nd'', "2D Dream Fever is also subject to the treatment.
* RearrangeTheSong:
** Almost all of the songs in the "Hello Planet" subgame either sample the song of the same name or are this.
** Medleys do this to a lot of well-known classics. Shout-out to ''Cool Medley -Cyber Rock Jam-'' in this department; it takes five typically-rock or hard rock songs and injects them with ''100% pure electronic rock.'' And it's badass.
*** Also, the Ending Medley remixes the ClimaxBoss songs with Miku's V3 voicebank and extra instrumentation, which is most noticeable with ''Intense Voice'', where the song noticeably '''''slows down''''' during the short breather moment.
* RelationshipValues: Every iteration of DIVA Room features these, with a separate gauge for each character. You can raise these with Item Events, giving them gifts, or simply interacting with them. The Derivatives do not have access to these features in the ''F'' series.
** ''mirai'' also uses this system, although it is no longer precisely measured. It is instead kept track of based on the pattern of the wallpaper backing a character in the Partner Select menu. Increasing their friendship through giving them Mirai Points, giving them food, and simply interacting with them is relevant to unlocking new items.
* {{Retraux}}: True to sasakure.UK's SignatureStyle, "Hello Planet" and "Negaposi*Continues" use chiptune as BGM.
* RevenueEnhancingDevices:
** Don't like repeating songs a gajillion times to unlock every single Module and Accessory in ''X''? Don't worry, you can buy Unlock Keys! For ¥500 each, you can unlock every Module of a particular type, and for ¥250 each, you can do the same for Accessories. Or you could pay ¥1500 and ¥1000 for Unlock Sets, which unlock every Module and Accessory, respectively. This only serves to save time; everything can be unlocked in-game for free, but it's a lot of work.
** Project Diva Arcade has a major method to make sure that you keep playing. Firstly, You have to play the game at least 10 times per month to earn a online license. Secondly, the module and unlock data for each player is saved on the cloud, which requires online access. [[NoFairCheating And obviously, that also means you have to unlock that song or module you want.]]
* RhythmGame: [[CaptainObvious Yes.]]
* {{Sarashi}}: Rin wears this over her chest in her "Ame" outfit.
* {{Satire}}: The entirety of "The MMORPG Addict's Anthem" is a satirical take on the life and culture of an online gamer, [[{{Irony}} while being set in an online game,]] ''VideoGame/PhantasyStarOnline2''.
* ScoringPoints:
** Pre-''X'' games have primarily two systems:
*** The first scoring system is the traditional points system. You get points for hitting notes on time, and you also get bonus points for hitting notes during Chance Time and holding down notes.
*** The other is the Grade Point system, which is simply an overall percentage of your note accuracy, with a few bonuses for completing Technical Sections and Chance Time.
** ''X'' uses Voltage in Live Quest Mode, which functions identically to points in both ''Hatsune Miku: Project DIVA'' and ''Arcade'', where completion is determined by score. Voltage gain is augmented by both Voltage Rate Bonus acquired by equipping Modules and Accessories and a naturally increasing multiplier that goes up as you perform well. Once you hit the "Voltage Clear!" mark that clears a song, you will enter bonus points territory, where you can continue earning extra Voltage to acquire Accessories and Room Goods. In Free Play, the Grade Point system is reused.
** The ''Project Mirai'' spinoff games features "SP" segments: Occasionally, you'll encounter yellow lines and if you combo every note including the glowing note at the end, you'll get 2500 points. Like ''X'', there's no Chance Time or Technical sections. Compared to other games in the series, holding down hold notes gives very few points.
* ScrewDestiny: "Name of the Sin" can be summed up as this in the most literal way possible.
* SelfImposedChallenge:
** Challenge Items are designed for this. They will make the game harder in exchange for adding a multiplier to your Diva Point acquisition at the end of the song -- if you succeed. Highlights include COOL Perfectionist, which reduces your health every time you hit a note with something other than a COOL, Micro Target, which makes all the targets really tiny, and Drunken from ''X'', which makes notes behave very erratically. ''F 2nd'' onwards allows you to stack Challenge Items for even tougher charts and even higher multipliers.
** On another note, getting a Perfect. There's absolutely no gameplay benefit to it - no awards are given other than a title or a trophy - but landing one is much harder than it sounds as long as the "safe" designation exists.
* SequelDifficultyDrop:
** The second game, ''2nd'', makes the acceptable hitboxes for each note far more lenient in exchange for populating charts with more notes in general. It also rebalances Normal mode to have far fewer fast-paced sections.
** An unusual case where it applies to a single ''level''. In ''F 2nd'', "The Intense Voice of Hatsune Miku"'s insane difficulty was greatly reduced from "god-tier" to "possible for most people", although it remains extremely difficult.
*** Completely and shamelessly averted with ''Future Tone'', where it's back to it's finger and controller destroying best, mixing hold notes and rapid note playing to the point where you are needed to focus on all four basic notes at once. [[UpToEleven Luckily, It does not yet have a version with Scratch Notes...]]
** ''X'' is significantly less intensive than the ''F'' series. Not only are Wide Scratch and Scratch Links excised, but the presence of Scratch Notes as a whole is severly limited; some songs only have a single Scratch Note, the Chance Time Star. Normal difficulty is also comparable to ''Easy'' in the ''F'' series, and Extreme charts feature far less button-switching and mash-fests. Depending on the song, Extreme is even comparable to ''F''[='=]s '''Hard'''!
* ShownTheirWork: With ''[=SPiCa=] 39[='=]s Giving Day'', on the Arcade version's [=PV=], The auditorium walls are rendered, because the room isn't truly in pitch darkness, there being just about enough light to make out things like the walls.
* SequelDifficultySpike:
** The final PSP entry, ''extend'', may very well be the hardest game in the series. Songs on Extreme are now filled with high-speed rapid chains.
** ''F 2nd'''s Normal mode is much, much more difficult than the previous game, bearing more resemblance to that game's Hard mode. Strangely enough, Hard is about the same, while Extreme is mostly the same with a few charts being even ''easier''.
** ''Arcade'' can be very difficult compared to the main series, as it includes heavy ButtonMashing on Extreme and many three-Wide Notes. This is coupled with a score-based success system that heavily penalizes you for screwing up a lot. The ranking system is also a lot tighter; just a handful of notes can mean the difference between an Excellent and a Great.
** ''Future Tone'' is this to ''Arcade''. The charts are unedited from ''Arcade''. The problem being that the charts are designed around ''Arcade'''s line design control scheme, not a controller. Playing ''Future Tone'' with a controller is insanely hard.
* SequenceBreaking: A minor example in ''F 2nd''- it's difficult but not impossible for a skilled player to unlock the alternate version[[labelnote:*]]The sum of your max combos from each time you've cleared the song is at least 500[[/labelnote]] of Miku's outfit for Cantarella before the regular version[[labelnote:*]]Clear the song 5 times[[/labelnote]]
* SetBonus: In ''X'', you can get an additional voltage rate bonus for wearing accessories of a similar theme together, like all animal parts or the same color.
* SharpDressedMan: Len's default outfit for "Monochrome Dream-Eating Baku" in ''F'', complete with a matching NiceHat.
** Kaito, in many modules: Ivy Phantom, Mysterious Butterfly, White Blazer, Rosa Blue, Phantom Thief, Prince Blanc and so on.
* SheIsAllGrownUp: Rin's ''Future Style'' module.
* ShoutOut:
** "Remote Controller"'s BGA features a UsefulNotes/SegaDreamcast controller, which replaces the UsefulNotes/{{Famicom}} controllers in the original PV because you can probably guess how Creator/{{Sony}} would feel about Creator/{{Nintendo}} copyrights in games on their systems.
** "Nyanyanyanyanyanyanya!" has a scene where the lead singer is picked up by a handsome cat with a personal cruise liner. The lead singer is then shown standing on the bow of the ship with arms outstretched, mimicking the iconic scene from ''{{Film/Titanic}}''. The handsome cat even holds his/her torso like [=DiCaprio=] did.
*** Let's also not forget [[https://www.youtube.com/watch?v=QH2-TGUlwu4 the reason why this song probably made it into ''F'' to begin with.]]
** ''Hm? Ah Yes...'' is a fractured version of Cinderella, complete with the 'clock striking at midnight' and 'glass slipper' motif, except Miku destroys the entire ballroom, instruments, clock and all.
** [[http://piapro.jp/t/WTTn This]] loading screen from ''F 2nd'' has the Famicom controller from the "Remote Controller"'s original PV plastered in the dead center of the image. The controller wound up getting recolored with [=PlayStation=] colors, but it retains its Famicom controller shape.
** Initally, the Project Diva intros featured a Yamaha [=DX7=] synthesizer somewhere in them, including Project Diva F revealing Miku's one has the voice settings for 37-39 read 'Best Friends Forever'. This same synthesizer is one of several instruments that are built into Miku's outfit. Unfortunately, in ''Project Diva F 2nd'', The [=DX7=] is not present.
** Being licensed by {{SEGA}}, every game is obligated to have at least one Module from a SEGA game.
*** The first game featured outfits for Miku from ''VideoGame/SpaceChannel5'' and ''VideoGame/ValkyriaChronicles''.
*** The second game had Rin's [=RoF=] Style, Leanne's outfit from ''VideoGame/ResonanceOfFate'', and Luka's VF Style from ''VideoGame/VirtuaFighter''.
*** ''2nd Extend'' featured Miku's Sonic Style outfit as part of the 20th anniversary of ''Franchise/SonicTheHedgehog'', Miku's [[VideoGame/VirtualOn Fei]] [[VideoGame/SuperRobotWarsUX Yen]] "costume", and ''Virtua Fighter'' outfits for Kaito.
*** ''F'' features a [[VideoGame/PuyoPuyo Arle Nadja]] costume for Rin, a Border Break Operator outfit for Meiko from ''VideoGame/BorderBreak'', as well as [=FOnewearl=] Style for Miku from ''VideoGame/PhantasyStarOnline2''.
*** ''F 2nd'' has all of ''F'''s outfits, and also brings back the VF Style for Luka. You can additionally purchase Luka's [[VideoGame/PhantasyStarUniverse Nagisa Replica]], MEIKO's [[Franchise/ShiningSeries Lin Xiao-Mei Costume]], and Miku's [[VideoGame/SeventhDragon Type 2020]] as DownloadableContent.
*** ''Mirai DX'' also gives Miku an Arle Nadja outfit much like Rin did in ''F'', this time to accompany the ''Puyo Puyo! 39'' minigame. KAITO also gets an accompanying Dark Prince outfit, also from ''Puyo Puyo''.
*** Project Diva X and Future Tone have [[Persona4DancingAllNight Persona 4: Dancing All Night Style]] Miku, which is notable for both representing ATLUS, who SEGA only recently acquired, and being a costume worn in the previous game [[RecursiveAdaptation BY Miku!]]
** Due to it being used in one of the songs, you can use the Stage portion of the [[VideoGame/PhantasyStarOnline2 ARKS Shop Area]] in ''F'''s Edit Mode.
** A clever double-shout concerning the Nagisa Replica; in the Japanese version, it is called "Nagisa Repca". "Repca" is a common naming convention for borrowed outfits in ''VideoGame/PhantasyStarOnline2''.
** The bonus level for the MiniGameCredits in F is called the {{Fantasy Zone}} Stage.
** In Project Diva ARCADE, and Project Diva Future Tone for [=PS4=], There are versions of [[{{Videogame/Outrun}} Magical Sound Shower]], [[{{Videogame/Afterburner}} FINAL TAKE OFF]][[note]]Sega's [=AM2=] division, known for working on ''[=OutRun=]'', ''After Burner'', and many other classic Sega arcade games, works on ''Diva Arcade'', which may explain the inclusion of these songs.[[/note]], and the theme songs for [[PowerDrift]] and {{Videogame/Quartet}} remixed with full vocals.
** How does Miku defeat Godzilla in "Gigantic Girl?" With [[VideoGame/StreetFighter Chun-Li]]'s lightning kick!
** The description for the roadroller item in Mirai DX was just about pulled straight out of [[{{Manga/JojosBizarreAdventure}} Jojo's Bizarre Adventure]].
** In "Ageage Again", Miku mimicks the iconic disco pose from ''Film/SaturdayNightFever'' during the line "SATURDAY kyo no kibun wa FEVER".
** The PV for ''Watashi no Jikan'' makes good on a couple of old memes, mainly [[{{VisualNovel/SchoolDays}} Nice Boat]] and [[{{Memes/Bleach}} Leek Spin]].
** The choreography for Lost One's Weeping is move for move the same as the live performance at Magical Mirai in 2015.
** Several Room goods in ''Mirai DX'' are ripped directly out of SEGA franchises, including a statue of Franchise/SonicTheHedgehog, an [[VideoGame/FantasyZone Opa Opa]], and a both working Hang-On Bike and a Virtua Fighter arcade cabinet that your Vocaloids can play with.
** In 'X', equipping both the Head Goggles head accessory, which are black, and the Goggles face accessory, which are red, earns you the [[Music/TheRollingStones "Paint It Black"]] bonus.
** Also in 'X', after completing Len's quirky request, he'll comment that the module you obtain as a reward is in the [[VideoGame/PokemonGoldAndSilver top 99.99% of modules.]]
* SiblingRivalry: "Remote Control" in ''F'' just screams this for Rin and Len, though they most-often get along very well in their other duet songs.
** Rin and Len exhibit this during the Quirky Cloud story portion (although the game is very careful not to identify them as siblings in the text), getting into a squabble about what "quirky" actually means before Miku concludes that the very act of them fighting is quirky enough.
* SignificantReferenceDate: In the ''mirai'' PV for "Kokoro", the date that flashes on a hex the moment Rin receives a heart is December 27, 2007, the real-life date that the Kagamine Rin/Len software was released. During the "run" portion of the PV, the date that appears after December 27, 2007 is March 3, 2008, the real-life day that "Kokoro" was first uploaded to Nico Nico Douga.
* SillyLoveSongs: Several. "Melt" and "Ai Kotoba", for example.
--> [[Main/SelectiveLocalisation "I ate you. --> baka"]]
* SingingVoiceDissonance: Pretty much everyone in ''extend'''s secret movie sounds somewhat different from their songs. Justified in the sense that Vocaloids oftentimes do not sound like their voice providers.
* SirNotAppearingInThisTrailer:
** MEIKO and KAITO were literally absent from every ''DIVA'' opening[[note]]MEIKO was only passively mentioned in ''Extend'' as a contact on Miku's cellphone[[/note]] until the ''F'' series. Even farther back, Luka, Rin, and Len don't exist as far as the first game's opening is concerned.
** GUMI doesn't appear in any of the openings for the ''Mirai'' subseries, even though she has top billing in several songs. She also has not been licensed as even DLC for Project Diva, and is completely excluded from Future Tone.
* SleepCute:
** The end of the anime video of "World's End Umbrella".
** Invoked by the Alarm Clock room item, in that the Vocaloid themselves goes to sleep so that, when the alarm goes off, they wake up with you.
* SomeDexterityRequired: ''Future Tone'' is '''not''' Dualshock 4-friendly. Highlights go to triple Wide Notes and double/triple holds, which, considering most people only have two thumbs, are rather difficult to do properly without claw gripping your controller. Want to play this game properly? Buy a specialized ''Project DIVA'' controller.
* SpaceElevator: The opening to ''F 2nd'' depicts a train that travels to space.
* SpellMyNameWithAnS: The official localizations for ''F'' and ''F 2nd'' used "Meiko" and "Kaito" (which is standard practice for many localizations dealing with all-caps from Japanese), but starting with ''X'' they were rendered again as "MEIKO" and "KAITO" (which is how their names are officially parsed on their software packages). The earlier ''Mirai DX'' had also used all-caps (along with the similarly-parsed "GUMI") due to having less of a localization job done on it overall.
* SpotlightStealingSquad: ''Mirai'' songs that include Gumi are not able to classify her as a lead singer due to how the game (and company politics) works, so songs where she duets with others in an equal fashion are still credited to her duet partner as the "lead" singer. This gets particularly noticeable in "1 2 Fanclub", where Rin's mainly the backup singer and Gumi carries most of the vocals.
* StalkerWithACrush: Miku and Luka big-time for Rin in "Rin-chan Now!"
* TheStinger: Played with. In "World's End Umbrella", after the movie ends, the title card appears as Miku walks outside to an idyllic ruin beyond the movie theater much like the one seen at the end of the movie. However, the ''song'' isn't over, which can catch players off guard if they weren't paying attention.
* {{Stripperiffic}}: Some modules are borderline, but the clearest example is definitely Meiko's ''Blue Crystal'': Her breasts are covered only by a belt!
** Miku's "Ambivalence" module is basically elaborate lingerie.
* StockShoutOut: In the '393 Quest' diva room theme, the message box above the bed will periodically display, "[[{{Videogame/Super Mario Bros}} Thank you Miku! But our diva is in another castle!]]"
** Notably, with the '393 Quest F' version, the line is changed to read 'Stage' instead of 'Castle', and is the only English string on any version of the theme, the rest of the text being untranslated.
* StylisticSuck: Miku's animation in ''Mirai DX'''s "Hello Planet" is very choppy to emulate a retro game sprite animation [[spoiler:until the end, when she reunites with the boy in heaven]], tying into the whole "retro video game" aesthetic of the video and the song itself.
* SuperDeformed:
** God-Tier Tune in ''F'' uses Nendoroid-based models for Rin, Len, Luka, and the lead singer.
** The ''Mirai'' subseries also, and exclusively, uses Nendoroids as a basis for its style. The original game's appearance at Tokyo Game Show also lead to the appearance of Mikudayo, which was ''supposed'' to be this... save for the fact that she was disproportionately chubby and lacked a neck, causing the whole outfit to come off as chillingly creepy. After it went memetic in the Japanese fanbase, it later became an AscendedMeme, appearing in every subsequent ''DIVA'' and ''mirai'' game starting from ''F'' as a customization option.
* SurprisinglyGoodEnglish:
** Luka's rap in "Ai Dee". Notably, this is one of the few songs where her English is perfectly understandable to a native English speaker. She even says ''"supercalifragilisticexpialidocious"'' correctly.
** Miku in 'Sharing The World', which appears in ''Project Diva X''. Notably, there is a Japanese version of the song, but they didn't use it.
* SuspiciouslySpecificDenial: ''Future Tone'' was originally claimed by SEGA to be a straight port of ''Arcade''. Problem being that towards release day, there have been some discrepancies to that claim, including the actual number of included modules and how the game would be distributed. [[note]]Specifically, Colorful Tone is missing four out of its promised song count, and the overall count has 4 extra songs overall, and two modules. Also, the game was originally a single release.[[/note]]
* SuddenlyVoiced: The secret movie in ''extend'' recuts the opening, but now fully voiced courtesy of the Vocaloids' individual voice providers.
* TakeThatUs: If Meiko finished a song wearing a cool module in ''Project Diva X'', she says she's glad you're collecting modules, since they're so much better than stamps. For those unaware, you collect stamps in ''Project Mirai''.
* ThatRussianSquatDance: Miku and Meiko briefly during "Koneko no Paya Paya" in ''Mirai DX''.
* ThreeMinutesOfWrithing: Some of the music videos are this. To name some examples, there's "magnet" and "Change me" from ''[=2nd=]'',"Hm? Ah, Yes." and "Nostalogic" from '''', and "Brain Revolution Girl" from ''X''.
* ThreePointLanding: In ''Puyo Puyo 39'', KAITO will do this at 6-Chain.
* ToTheTuneOf: "Cendrillon" and "Adolescence" in ''Mirai'' use the exact same song, the difference being that the former is performed by Miku and KAITO, the latter by Rin and Len. They also have different lyrics. This is referenced in the [=PVs=] themselves, which use an identical dance routine save for the opening, which reflects the theme of the song. They even use the same splitting note track, but a different path is taken depending on the song.
* TokenMiniMoe: Rin and Len, of course.
* TooLongDidntDub: The lyrics in ''F'' were subject to this due to requiring licences. Averted in ''F 2nd'', which acquired the necessary licences to translate almost every song except "Kagerou Daze". ''Mirai DX'' also does this with its lyrics, which notably affects plot-heavy songs like "Aku no Musume/Meshitukai", which make ''far'' more sense if you know what the song's actually saying.
** The Translated lyrics make a comeback in ''X.''
* TooManyMouths: The default stage and Miku's costume for "Babylon" in ''X'' feature giant dentures, referencing the song's original illustration.
* TransformationSequence:
** In the first few games, the openings were obligated to have a Vocaloid transform into their performance outfit from their school outfit or casual clothes with a flashy animation. This tradition was dropped by ''F'', when the school setting was replaced and everyone simply wore their normal outfits by default.
** Acquiring a Module in ''X'' is depicted by a scene cut from the video into a view of the five Element Gems merging into the player Vocaloid, transforming them into the Module you just acquired.
* TranslationCorrection:
** Some slight instances of Engrish were corrected for the English release of ''F''. For example, "Rest X Notes" seen during a Technical Zone became "Notes Left: X".
** For F 2nd, further translations were done, with the vague 'WORST/AWFUL' note designation now being called 'MISS', and the 'LOUSY' rating being replaced by the more optimistic 'SO CLOSE'.
** Subverted in ''Mirai DX,'' where "MISS" notes are suddenly "WORST" again, and "COOL?" notes (hitting a note with the wrong button) become "MISS" notes.
** X changes the "Module Get" message to "New Module", rare modules say "New Rare Module" and the "Quest Clear" message is "Request Complete".
* TrashTheSet: Several Vocaloids engage in this, but Rin is the queen of this trope.
** Tengaku from ''F'' has the stage where Rin is playing burst into flames and begin to collapse as part of the Chance Time event, to the point where she's standing in flaming ruins.
** Rin does it AGAIN in "X", this time breaking a guitar and flinging a microphone stand across the stage in Lost One's Weeping.
* TruerToTheText: The ''DIVA'' PV for "Hello Planet" utilizes a loose adaptation of the original PV that paints a more cohesive tale, but excises the video game aesthetic. Conversely, the ''mirai'' PV is a nearly 1-to-1 recreation of the original PV, just with a few added scenes and extensive use of voxels. As well as Miku's new 3D model, of course.
* TwinSwitch: [[spoiler:How the Servant saves the Daughter of Evil in "Aku no Meshitsukai/Servant of Evil"; he switched places with her at the last second so he would be killed in her place.]]
* TwinTelepathy: Rin and Len seem to exhibit this in ''X'''s story mode (although the game is careful not to actually describe them as twins or even siblings).
* UnexpectedGameplayChange: ''Break the Limit'' mode in ''Miku Flick''. Unlike the standard difficulties, where you only have to hit highlighted syllables to pass, ''Break the Limit'' allows you to hit every syllable. In addition, you cannot fail out of ''Break the Limit'', and the number of notes you hit in ''Break the Limit'' is tracked as a high score. The former stipulation could be interpreted as a form of mercy, since in the first game, [[ThatOneLevel The Disappearance of Hatsune Miku]] is a playable song.
* UnflinchingWalk: Luka does this briefly in "DYE" in ''Diva F'' as columns of ice shatter around her.
* UpdatedRerelease:
** ''[=2nd#=]'' fixes several bugs and niggles, speeds up load times, and comes with a free DLC code that gives you all of ''extend'''s costumes to use. ''extend'' could be considered this to ''[=2nd=]'', especially seeing as how its working title was ''Project DIVA 2.5'', but its song list is somewhat more divergent than the usual instances of this trope.
** ''Project Diva Future Tone'' is an updated rerelease of Project Diva Arcade, restoring common Project Diva features and transferring it to the [=PS4=].
** Literally, some songs are redone using newer voice banks to make them sound more natural, like the 1st generation song "Koi Suru VOC@LOID", which sounds ''very'' different in ''X'' due to the song being reproduced in the Hatsune Miku V3 engine.
* VariableMix: Missing a note will cause whatever vocals corresponding to that point in the music to not play. Miss notes repeatedly and the characters will sound like they forgot the lyrics.
** Some games, like ''Extend'' and the ''Mirai'' subseries, do not have this, due to the song library on it's own taking up most of the disc or cartridge already.
* VocalDissonance: Can be invoked by the player depending on the character and song combination, since each song will still be sung by the original singer.
* WaveMotionGun: The train in ''Mirai DX'''s "Senbonzakura" has one, used for ''exorcism'', for some reason.
* WhenSheSmiles: The opening movies for the games are some of the few instances where [[PerpetualFrowner Hachune Miku]] actually smiles.
* WholesomeCrossdresser: Len's Phoenix Moon module, a feminine kimono, and Rin's Ame module, a masculine happi coat, in ''F'', their default outfits for "Kagamine [=HachiHachi=] Flower Fight".
* WhoWearsShortShorts?: Miku's Yellow module in ''2nd'', ''extend'' and ''F 2nd'', Rin and Len's sport-themed modules in ''F''.
* WordSaladLyrics: "[=PoPiPo=]"'s English verse is absolutely ''full'' of this.
-->''Let's take, you are lovin' it!''
-->''Vegetable juice''
-->''You must love this drink, I've decided now!''
-->''So take now, with true heart, vegetable juice''
-->''It costs just two dollars!''
* WretchedHive: "Babylon" in ''X'' is about one.
* WritingAroundTrademarks: Although nearly everyone should be well aware of the characters' nature, since "Vocaloid" refers to the Yamaha-owned software engine and not the Crypton-owned characters, the games are extremely careful to avoid using the word (except when it appears in lyrics or song titles). This gets taken UpToEleven in ''X'' when Live Quest Mode has to tiptoe around by referring to Miku and her friends as "digital singers", even though several modules have "VOCALOID" printed on them prominently.
* ZettaiRyouiki: Miku and (to an extent) Luka, in their default outfits. Most of the other characters also get in on this with their optional modules. Even Len!

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