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Let's sing together!note 
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Project SEKAI: COLORFUL STAGE! feat. Hatsune Miku is a Free-to-Play Rhythm Game game released on September 30th, 2020 for mobile devices, with a demo version released from September 4th through the 11th. The game is published by SEGA and developed by Colorful Palette, a subsidiary of Craft Egg. Project SEKAI is an entry in the larger SEGA feat. HATSUNE MIKU Project that the Hatsune Miku: Project DIVA series is also a part of, and as such shares a few elements with its companion series. The game also doubles as a Tech Demo Game for Crypton Future Media's "Newtype" series, a line of in-development voicebanks and counterpart to Yamaha's Vocaloid software.

The story of Project SEKAI takes place in a world very similar to ours, where Virtual Singers, voice synthesis software that are marketed like real singers, are popular music icons recognized the world over. In this world, there exists the concept of "SEKAI": pocket universes formed from the true feelings of humans and inhabited by Virtual Singers. With the aid of an "Untitled" song, humans can travel into the SEKAI and, by bringing their true feelings to fruition, transform a SEKAI into a new song. Project SEKAI follows the stories of several unique individuals whose fates align through the "Untitled" song and the music born from their bonds.

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The SEKAI found throughout the game are split into one of five types: Band, Idol, Street, Musical, and Underground. Each Sekai stars a group of talented young musicians, each accompanied by a group of Virtual Singers who resonate with the overall theme of the SEKAI.

  • Leo/need: The group in the School SEKAI, Leo/need is a band formed of Childhood Friends. Its members are Ichika Hoshino, Saki Tenma, Honami Mochizuki, and Shiho Hinomori.
  • MORE MORE JUMP!: The group in the Stage SEKAI, MORE MORE JUMP! is a team of four Idol Singers: Minori Hanasato, Haruka Kiritani, Airi Momoi, and Shizuku Hinomori.
  • Vivid BAD SQUAD: The group in the Street SEKAI, Vivid BAD SQUAD was formed to "surpass a legend". Its members are Kohane Azusawa, An Shiraishi, Akito Shinonome, and Toya Aoyagi.
  • Wonderlands X Showtime: The group in the Wonderland SEKAI, Wonderlands X Showtime is a fun-loving group who wants to put on a good show. Its members are Tsukasa Tenma, Emu Ootori, Nene Kusanagi, and Rui Kamishiro.
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  • 25-ji, Nightcord de. / Nightcord at 25:00: The group in the Empty SEKAI, 25-ji, Nightcord de. is a mysterious musical group only seen performing at night. Its members are Kanade Yoisaki, Mafuyu Asahina, Ena Shinonome, and Mizuki Akiyama.

Gameplay consists of traversing between the real world and the SEKAI, interacting with a wide range of characters along the way. In songs, players tap, hold, slide and flick notes as they approach a bar at the bottom of the screen, all while backed by gorgeous 3D live videos starring the groups and Virtual Singers. Through a gacha, one can collect additional outfits for the characters to wear in both 3D and 2D (animated in Live2D) scenarios. The game also features a special mode called "Virtual Live" where groups of players can join up and attend virtual concert versions of in-game performances on a regular basis.

As a spinoff of the Project DIVA series, Project SEKAI's song list consists of Vocaloid songs both returning and new to the series, featuring a wide range of producers. Unique to Project SEKAI is "SEKAI Ver." songs, new arrangements of Vocaloid hits that combine the Vocaloid's performances with the game's original characters. "Virtual Singer Ver." songs are available as well, for players who want to play to the tunes that they know and love. In addition, the game heavily features brand-new songs commissioned specifically for the game; while commissioned songs are nothing new to the SEGA feat. HATSUNE MIKU Project franchise, Project SEKAI weaves them into the story through a regular event schedule, with new events and songs added every other week.

    open/close all folders 

    Featured Songs 
Note: Songs in bold are SEKAI Ver. only

Leo/need

MORE MORE JUMP!

Vivid BAD SQUAD

Wonderlands X Showtime

25-ji, Nightcord de.

Virtual Singer

Mixed

  • SEKAI (Original, DECO*27 & kemu) note 
  • Wah Wah World (Original, Mitchie M & Giga-P) note 
  • Gunjou Sanka (Original, Eve)note 
  • Identity (Original, Kanaria)note 
  • Aoiro Enogu (Original, Kujira)note 
  • Salamander (Original, DECO*27)note 
  • Cosmo Spice (Original, Pinocchio-P)note 
  • Tokugawa CUP NOODLE Kinshirei / Tokugawa CUP NOODLE Ban (Mitchie M)note 

Other

In addition to regular content, the groups are featured in a variety of additional content:


  • 25-ji, Night Radio de.: A web radio show that features Kanade, Mafuyu, Ena, and Mizuki's voice actresses and (true to the group's name) premiers at 1AM JST. Episodes vary in length between 30 minutes to an hour.
  • WonderShow Channel: A monthly stream that stars the actors and actresses from Wonderlands X Showtime (with guests from other units) and delivers update information for Project SEKAI, including upcoming song releases and version updates.
  • MORE MORE JUMP! Voice Dramas: Voice dramas starring MORE MORE JUMP! are occasionally featured on the game's official YouTube channel. Episodes are around 5 to 10 minutes each.
  • Leo/need SNS Feed: Leo/need is featured in a series of fictional social media posts that are shared through the game's official Twitter account.
  • Vivid BAD SQUAD Archives: Occasionally uploaded to the game's official YouTube channel. In addition to featuring short voice drama parts, they also feature alternate covers for existing songs in the game that are normally performed by other units.
  • Petit SEKAI: A series of anime shorts that premieres on Tokyo MX in Japan and on the game's official YouTube channel.
  • Colorful Corner: An English language video series presenting news and updates on Hatsune Miku: COLORFUL STAGE!, alongside variety content. Hosted by COLORFUL STAGE! community manager Saccharin and assistant Rappie.

A wiki for the game can be found here.

Now has a character page.

International versions were announced on August 31st, 2021, the 14th anniversary of Hatsune Miku's release date, including an English version of the game (as Hatsune Miku: COLORFUL STAGE!) and a Chinese version. The Chinese version launched on September 30th, 2021 in mainland China and South Korea and will be gradually made available to other Asian regions, while Hatsune Miku: COLORFUL STAGE! released December 7th, 2021 to 130 countries worldwide, with an open beta test released on October 4th, 2021.


Project SEKAI features examples of:

  • Abusive Parents: The game features few, though the most notable examples are Touya's father who is implied to have mellowed out as a Same Dreams, Same Colors, Akito and Ena's father, and Mafuyu's parents.
  • Actually, I Am Him: A fair portion of the 25-ji story involves the girls discussing and following OWN, a rival producer who is quickly gaining traction on the internet despite (or because of) their "cold and emotionless" musical style. It's revealed halfway through the story that OWN is actually Mafuyu under a pseudonym.
  • Affectionate Nickname: In one yonkoma, MEIKO introduces herself to the MORE MORE JUMP! team and is given the nickname "Mei-chan" by Shizuku. When MEIKO proposes calling Shizuku "Shii-chan" in return, Shizuku adamantly refuses since the nickname is reserved for her precious younger sister (much to MEIKO's confusion).
  • Ageless Birthday Episode: Whenever a characters' birthday is celebrated, no one ever mentions what age they were previously or what age they're turning.
  • And Starring: The "feat. Hatsune Miku" in the title, in case you didn't know who was running the show.
  • And Your Reward Is Clothes: You can use rare materials dropped from songs to buy outfits (and color variations of those outfits) for characters to wear during 3D music videos. Some outfits are tied specifically to 4★ cards that must be owned before you can buy them.
  • And Your Reward Is Interior Decorating: While in the Sekai, you can purchase furnishings for each of the particular Sekai, with each one having unique decor. In addition to making it look nicer, furnishings also serve as stat boosts for your units, and can be upgraded with additional purchases.
  • Animated Music Video: Some songs have dance videos where you can watch the characters perform the song on-stage, with the ability to swap out the characters by equipping different cards or changing their outfits. A few songs also come with traditional music videos that play in the background during gameplay, being either copied from their existing videos or created specifically for the game.
  • Anime Theme Song: The game features 2 original theme songs, produced by famed Vocaloid producers DECO*27 and kemu (SEKAI) and then another one by Giga-P and Mitchie M (Wah Wah World). "Hello World" from the first season of Blood Blockade Battlefront is also covered here.
  • Anti-Frustration Features:
    • Retrying a song is not only free of charge, you can retry halfway through a live if you broke combo for example.
    • Stamina is not deducted if the player fails to clear a stage.
    • After complaints from the beta that the hit detection on flick notes was too strict, flick notes were adjusted for the final release such that any form of upward swipe is valid for a flick note, but hitting a flick this way only awards a GREAT judgment as opposed to a PERFECT judgment if you swipe in the correct direction.
    • The game's gacha system features multiple levels of pity to assist unlucky players.
      • Pulling on the gacha at all generates a "pity currency" called Gacha Seals; each pull is worth 1 Gacha Seal. Gacha Seals can be spent on the purchase of a card in the gacha that you acquired the Seal from; 4★ cards require 300 Seals, while Birthday Cards require 100. Alternatively, you can spend Gacha Seals to buy Gacha Seal Tickets at a 10:1 exchange rate. Gacha Seal Tickets can either be spent on a future Gacha Seal card purchasenote  or saved to buy cards directly from the Gacha Seal Ticket Shop. Said shop only accepts regular (green) Gacha Seal Tickets and only stocks permanent cards (so no Birthday or ColorFes, for example), but cards from past gachas or events can be bought here, with 2★ and 3★ cards appearing after 6 months and 4★ cards appearing after one year.
      • There is also a separate pity called Gacha Bonus. This is a gauge that accumulates Gacha Bonus Points whenever you pull from the gacha, with a gain rate of 0.5 Points per Free Crystal pull and 1 Point per Paid Crystal pull. When 50 Points are built up, you can expend gauge to get a random 4★ for free, while building up the gauge to the maximum of 100 Points allows you to get a free 4★ of your choice.
    • For a while, Another Vocal Ver. songs were very difficult to get as they only take character-specific Another Vocal Cards that could only be obtained by raising a character's Relationship Values. This was remedied by later events introducing group-specific Another Vocal Cards that can be substituted for any one corresponding member's Another Vocal Card as well as an update that allows players to exchange unwanted Vocal Tickets for Another Vocal Cards.
    • During a Cheerful Carnival event, you have the option of changing teams once at any time if you don't like your team choice. However, once the first scores are tallied all players are locked into their choice, preventing players from swapping to the leading team after the fact.
    • April 2021 added some quality of life features to Multi-Live to address some of the issues plaguing the infamously-buggy Cheerful Carnival Multi-Lives, including rebalancing the scoring rank in real-time to accommodate players who disconnect mid-match and enabling the activation of Super Fever even if a team member has disconnected.
    • Since Event After Lives are only around for one day, after the event is added to the Event Story roster under the Story tab, you can download and watch a solo version of the After Live whenever you want. If you missed the item from the concert, you can also get the item this way.
    • The Event Story menu also allows quick access to Side Story for cards that are tied to events, including those bought from the Event Shop and cards that appear in related gachas. This makes accessing all stories tied to the event much more streamlined compared to using the Training Menu to see the stories.
    • The 1st Anniversary update includes multiple quality of life features, such as:
      • The ability to use Gacha Seal Tickets to buy cards directly via a shop. 2★ and 3★ Cards are added to the shop 6 months after their first appearance, while 4★ Cards are added a year after, but Colorful Festival and Birthday cards can't be bought this way.
      • A massive overhaul to the Event Bonus system. The base Bonus for a matching Character/Type has been increased to +25% (from 20%), cards introduced in the corresponding Event Gacha give an additional +20% Bonus, Cards now give extra Bonus based on their Master Rank, Original Virtual Singers are now eligible for +15% Bonus, and any card of the required character is now eligible for Bonus regardless of what Unit it's associated with.
      • A large rebalance to Challenge Live point calculation. Challenge Stages now take less points to level up and Challenge Points are easier to get in exchange for reducing the magnitude by which Challenge Point gain scales with score.
    • The February 2022 update added an optional feature that causes your combo counter to glow rainbow while you have an All Perfect active.
    • The game finally began rerunning Limited Event Gachas in May 2022, giving players another opportunity to get Limited Cards they they missed.
  • Anti-Rage Quitting: Players are encouraged to stay in a Multi-Live to the end even if they run out of Life, as they can still contribute to Super Fever and earn rewards at the end even if they can't score any more points. Players who disconnect from Multi-Lives too often are also slapped with temporary bans from Multi-Lives, and disconnecting in the middle of a song dynamically recalculates score distribution for the other players so they don't get punished for something you did.
  • April Fools' Day: The April 2022 event involves all of the Virtual Singers showing up in the "real world" and hanging out with each other and their other selves simultaneously. In addition, all of the group members are rearranged into fake groups, with each "group" getting new versions of Sekai covers featuring the new members.
  • Arrange Mode: Clearing 30 Lives with a specific character in the Center slot of your formation unlocks the Challenge Live mode, a daily mode where you tackle songs and aim to beat a target score using only cards of that specific character. Clearing the target score grants huge rewards, including Crystals, Character EXP, and a variety of rare materials.
  • Art-Shifted Sequel: The artwork/models in this game are a major departure from Project DIVA, which based it's style off of Kei Garou's Vocaloid2 box art. Project SEKAI on the other hand has gone with using a simplified form of the Vocaloid3 and Vocaloid4 box art style, which was drawn by iXima.
  • Ascended Meme:
    • Capitalizing on the already memetic Mikudayo, promotional material for the game introduced "MEIKOdayo" and "KAITOdayo" variants with the same messed-up proportions as the original.
    • The Nene-robo is basically a "dayo"-fied Nene.
    • The "Miku(?)'s Costume" boost item you can buy in the Wonderland Sekai is a life-sized Mikudayo mascot outfit similar to the original outfit worn at Tokyo Game Show.
    • The game brings back the fan-associated Virtual Singer items, with those being Miku's spring onion, KAITO's ice cream, Luka's tuna, MEIKO's wine, Len's bananas and Rin's oranges.
    • The utaite trend, which was originally spawned by the popularity of Vocaloid songs. The original characters are essentially utaite, as they cover and perform popular Vocaloid songs which are then deemed "SEKAI" versions.
  • Balance Buff: Event contribution for Virtual Singers was universally buffed after the 1st Anniversary update; all cards of a given Virtual Singer are valid for the event point bonus regardless of unit if an event specifically requests that Virtual Singer, and Virtual Singer cards with the "Virtual Singer" unit designation were boosted to provide a flat +15% bonus at minimum regardless of the event.
  • Bilingual Bonus: "from Y to Y" MASTER has a section where a series of hold notes spells out "FUTURE WISH" in English during the part where "mirai" and "negai" are sung repeatedly.
  • Bishounen: Of the original cast, the sole male character Akito, Toya, Tsukasa, and Rui are all very attractive young men. KAITO and Len don't slack behind either, continuing on the trend of them being portrayed as bishounen.
  • Bland-Name Product: The "Nightcord" chat program that Nightcord at 25:00 uses to communicate appears to be a riff on Discord, the real-life popular chat app, which is reaffirmed by the program's appearance in Petit SEKAI.
  • Boke and Tsukkomi Routine: While Tsukasa is capable of some pretty wacky antics on his own, Emu's behavior is so off-the-walls crazy that more often than not he ends up playing straight man to whatever bizarre thought process is running through Emu's head at any given moment.
    • Airi frequently plays the straight man in response to Shizuku's odd comments.
  • Boring, but Practical:
    • Combo achievements on Easy and Normal don't give Crystal, but the Gold rewards are quite plentiful, which can help in a pinch if you need to buy something quick.
    • Because of the extreme rarity and material costs of 4★ cards, 3★ cards will end up being your main bread and butter for a while unless you're ultra lucky or have way too much money, as you're guaranteed one per 10x pull and they're significantly easier to max. A fully invested 3★ will typically have competitive stats and Power with a max level un-invested 4★ with a marginally weaker Skill, making them just as viable.
    • For Character Ranks raising, Star Lessons and Skill Level Up on 1* and 2* cards are the best way to gain Character EXP fast as they cost less resources.
  • Breaking Old Trends: Project Sekai does this frequently, which often throws the players off.
    • During the majority of the games first year, it was believed by players that Virtual Singers would not receive limited edition cards due to nearly all of the Original Generation receiving cards before them. As of the games first anniversary, Miku broke the trend by receiving a limited Colorful Festival card, with the other Virtual Singers receiving limited cards a few months later through a collab event.
    • For nearly the entirety of the games first year, 3DMV's for Leo/need appeared to be exclusively comprised of Miku appearances, as no other Virtual Singer was shown singing alongside the group. However as of the groups cover of Lost One's Weeping, Rin Kagamine was shown singing alongside the group playing her own unique guitar. Later, Len Kagamine appears in a 3DMV alongside the group.
    • Len Kagamine is the first Virtual Singer to be introduced into a new Sekai in a card rarity lower than a 3★. In this instance, he was introduced into Leo/need's Sekai as a 2★ event card.
    • April 2022 marked the first instance of a Virtual Singer Event, with only Virtual Singers getting event boosts rather than the original characters.
  • Breather Episode:
    • "Same Dreams, Same Colors" acts as one for Vivid Bad Squad as the group spends a majority of the event on a camping trip rather than discussing working toward their goal to surpass RAD WEEKEND.
    • Compared to the more Rapid-Fire Comedy pace of other Petit SEKAI episodes, Episode 10 is a simple, feel-good episode about teaching Miku all about cup ramen.
  • Brick Joke: In Episode 6 of Petit SEKAI, Rui gets the idea to time travel to next week to get a second Tsukasa for their performance. In Episode 7, which premiered the following week, said time machine can be seen appearing over the roof of Kamiyama High during MORE MORE JUMP!'s livestream.
  • Bribing Your Way to Victory: The exact definition of "victory" varies on a player-to-player basis, but if you intend on ranking high in events get ready to pony up some cold hard cash. Crystal you get from microtransactions can be used to both gamble on cards specifically designed to be useful in its accompanying event and recharge Live Bonus to grind for more points faster compared to waiting on your timer to recharge. The 1st Anniversary update drastically widened the gap between paying and non-paying players by introducing a bonus to Event Point gain for any "featured" gacha card on an event banner and boosting Event Point gain even further based on a card's Master Rank, with higher rarity granting higher Master Rank boosts, making it even easier for paying players to generate massive amounts of points in shorter amounts of time. COLORFUL STAGE! makes it worse with Colorful+, whose higher tiers grant actual gameplay advantages such as +10 Auto-Live daily limit and +10 Live Bonus cap, meaning paying more for Freemium makes it that much easier to tier.
  • Call-Back:
    • In the "Intersecting Melodies, Glowing Warmth" event, Ichika identifies Kanade and Mafuyu from the "marionette" song they created in the "Imprisoned Marionette" event. Kanade in turn recognizes Ichika as the girl singing in the park during the "Singing With You in a World Where Cherry Blossoms Dance" event.
    • The music video for "Worldwide Wander" has a scene of a crystal heart necklace falling into the water, referencing the previous MORE MORE JUMP! original song, "Ice Drop".
  • Call to Adventure: Each of the stories start with the group leader being transported to their respective Sekai and meeting Miku for the first time, who reaches out to them and invites them into the realm of the Sekai to achieve a specific goal.
  • The Cameo: While not appearing in the game physically, non-Crypton Vocaloids reprise their original songs in certain cases, including flower, GUMI, and IA.
    • Characters from other units will often appear in a different units event stories to play small roles.
  • Cap: 1★ cards cap at Lv. 20, 2★ cards cap at 30, 3★ cards cap at 40 and can be raised to 50, while 4★ cards cap at 50 and can be raised to 60.
  • Cast Herd: Not quite a hard and fast rule as it would seem. Characters typically only interact within their units (outside of mixed events and rare area conversations), but it's very common for them to know characters from other units due to a shared history, being classmates, being related, etc. That said, nearly every group save for Leo/need and the Virtual Singersnote  has a designated pair, though even these get shuffled around sometimes, usually for SEKAI cover songs:
    • MORE MORE JUMP!: Minori/Haruka, Airi/Shizuku
    • Vivid BAD SQUAD: Kohane/An, Akito/Touya
    • Wonderlands x Showtime: Tsukasa/Emu, Rui/Nene
    • 25-ji, Nightcord de.: Kanade/Mafuyu, Ena/Mizuki
      • In the case of SEKAI variant Virtual Singers, they are often officially paired with certain original characters who they often share aspects of their personality with. For example, Hatsune Miku is often paired with Ichika in School SEKAI and Mafuyu in Empty SEKAI.
  • Cast of Snowflakes: The background characters that wander around the over world aside, the supporting characters that avert being The Faceless all have unique designs and live2D models regardless of their importance to the story. Some notable examples include Sakurako, Nagi (who only appears in a flashback), and Mio.
  • Character Focus:
    • Although the overarching stories of each group covers all of the characters and how the group formed, each of the stories contains at least one chapter that gives a member from that group backstory and/or characterization.
    • Unit events serve to continue the story of a specific character from that unit, oftentimes also featuring a new song that has that character at the center. "Stella" featuring Saki and "RAD DOGS" featuring Touya are just two examples.
  • Comic-Book Time: The characters never seem to age or advance a grade regardless of how much time passes or how many birthdays they seem to have. Interestingly, by the games second new years event the character seem to remember the events of the previous new year but are still in the same grade they were during that time.
  • Co-Op Multiplayer: Players can team up to clear lives together on multi-player.
  • Cosmetic Award: Getting an All Perfect gives a slightly flashier confetti and jingle at the end of the song. You also get a rainbow pip for song completion instead of the usual yellow pip (cleared) or pink pip (Full Combo).
  • Cover Version:
    • A major element of the music in this game, which features humans covering Vocaloid songs not unlike the popular "utaite" trend. The Vocaloids themselves also get in on the action, with them either singing alongside the human singers, covering other Vocaloid songs (such as Miku performing "Roki", originally a Kagamine Rin song), or both.
    • Songs that have non-Crypton Vocaloids as their original singers may come included with an additional cover redone in Crypton voicebanks, such as "Fragile" having a Len and KAITO version in addition to the standard GUMI version.
    • In addition to SEKAI Ver. and Virtual Singer Ver. songs, ranking up a character will allow you to unlock Another Vocal Ver. songs, which are solo covers of songs performed by specific characters.
    • MORE MORE JUMP!'s theme song, "Newly Edgy Idols", twists it a bit by altering some of the backing lyrics to match the singers depending on whether the SEKAI Ver. (with the MORE MORE JUMP! members) or Original Ver. (with Miku, Rin, Luka, and MEIKO) is played.
  • Covers Always Lie: The original title screen has Ichika meeting base Miku, but it doesn't happen in-game at all (Ichika initially only meets Leo/need Miku) until the end of the first week of the game (the last of a series of virtual lives to commemorate the game's release), where all the unit leaders perform together with base Miku, and in-story until the 1st anniversary event story, where all the unit leaders express shock at base Miku not looking like any of her Sekai versions that they were familiar with.
  • Creepy Doll: In the "Imprisoned Marionette" event, "25-ji" goes on a day trip to an antique doll museum that Kanade received tickets for from Honami. During the trip, Mafuyu comes across a beautiful marionette, which inadvertently triggers her Trauma Button and causes her to freak out. Kanade takes the incident as a learning opportunity to help Mafuyu open up a little more to the others and figure out what Mafuyu saw in herself from that experience.
  • Crossover:
    • Several of the game's songs are featured in SEGA's Performai trilogy of arcade rhythm games. maimai features Rettou Joutou by Vivid BAD SQUAD and Jishou Mushoku by 25-ji, Nightcord de. with accompanying 3DMVs from the game, O.N.G.E.K.I. features Time Machine note  and Tsugihagi Staccato by MORE MORE JUMP!, and Chunithm features Sekai wa Mada Hajimatte sura Inai by Wonderlands X Showtime as well as cards from the game as playable characters. The series later returned the favor with three special song additions for Project SEKAI, adding a Nintendo Hard song from each of the three games: "the EmpErroR" from maimai, "Don't Fight the Music" from ONGEKI, and "End Mark ni Kibou to Namida wo Soete" from CHUNITHM.
    • The game featured a collaboration with the Vocaloid-based Evillious Chronicles franchise in December 2021, which added the songs "Aku no Musume", "Aku no Meshitsukai", and "Saribitotachi no Waltz". In addition, it added a brand-new limited-time SEKAI with characters, story and area conversations adapted from the franchise, as well as a special gacha with cards based on the characters that each Crypton character plays in the "Seven Deadly Sins" arc of the series.
    • A Regional Bonus for COLORFUL STAGE! added a Sonic the Hedgehog outfit for all characters as a pre-registration bonus.
    • January 2022 added a collaboration with Nissin CUP NOODLE. This added five new comissioned songs with lyrics inspired by CUP NOODLE flavors, with new SEKAI Versions for each of them. Notably, these are also the first songs besides "SEKAI", "Wah Wah World", and "Gunjou Sanka" to have cross-unit covers, with all three sibling pairs (Tenmas, Shinonomes, and Hinomoris) getting covers with Miku. Nenerobo and Mikudayo also get their first ever singing roles alongside Nene, Len, and KAITO.
  • Crossover Punchline: The entire premise of the April Fools' Day event. It's the first time the Virtual Singers are shown interacting with their various other selves onscreen and other variations of the Virtual Singers they're familiar with. There's also crossover between the existing units, leading to new covers of SEKAI songs featuring the new members. The temporary groups and the songs they cover include:
    • Aoharu/friends: Ichika, Saki, Ena, and Airi covering Aoku Kakero! with Miku
    • YUME YUME JUMP!: Shiho, Shizuku, An, and Kanade covering Happy Synthesizer
    • Fantasista SQUAD: Akito, Touya, Tsukasa, and Rui covering Ifuudoudou with KAITO
    • Happiness Sentai Sunny-Sunny☆Wonder: Haruka, Kohane, Emu, and Mafuyu covering Positive☆Dance Time with Rin
    • Kyujitsu, Shumijin Doushi de.: Honami, Minori, Nene, and Mizuki covering Venom
  • Cut-and-Paste Environments: Each of the groups have a single stage associated with them that is used across all MVs they perform. They do manage to keep it fresh between songs by drastically changing the setting and theme of the stage to fit the song, however. Come the games first anniversary new stages were introduced.
  • Damn You, Muscle Memory!:
    • Amusingly, the game's use of variable note sizes can cause headaches for players accustomed to uniform note sizes used in most hallway-style rhythm games. In many of these games, "wide" notes are usually special and usually require a unique input, but in SEKAI big notes are just normal notes but, well, big. Sight-reading charts can thus get confusing for players accustomed to other rhythm games, as the presence of wide notes can easily throw off a player's mental processing. (Unless you also played Tokyo 7th Sisters which has had the same wide notes since November 2017, but even then the way the two games handle holds and multiple inputs vastly differs, resulting in this trope anyway.)
    • As anyone who has played a sufficient amount of MASTER can attest to, any chart with inconsistent or unusual note shapes can be very disconcerting and disorienting to look at, making sightreading that much more difficult. At least (as of this writing) the game has yet to implement variable speeds in its charts, a known Scrappy Mechanic in various rhythm games.
  • Difficulty Levels: with Easy, Normal, Hard, and Expert flavors. New to this game is the dreaded Master difficulty, which must be unlocked by clearing certain conditions under Expert and features astronomically tough charts that range anywhere between 26 to 33!
  • Diminishing Returns for Balance: Live Bonus becomes less effective the more of it you use at once. By default, you can use up to five at once, but while you get 5x EXP/Items for using one and 10x for using two, at three you only get 14x, at four you only get 17x, and at five you only get 20x. During Events, you can use up to double the maximum allowed Live Bonus per song, but you get less and less Event Point multiplier per Live Bonus used after 3, capping at 35x at 10 Live Bonus, and EXP/Item rate scales even worse, capping at 25x for using 10.
  • Dysfunction Junction: Despite the game's cheery outlook, concept and atmosphere, the cast themselves are internally a mess in different ways. A significant number of the characters are shown dealing with varying degrees of depression due to the pressures of societal conformity (Mafuyu in particular is pretty damn close to suicidal) and many others are victims of bullying or have emotionally distanced themselves to avoid bullying from others. Vivid BAD SQUAD are relatively well adjusted in contrast to the other groups with the exception of Touya who suffers dealing with the effects of his father's oppressive control of a majority of his life until he personally decided to call quits and find what it is that he wanted to do. 25-Ji Nightcord de, however, play this even straighter compared to the other groups in the game and their corresponding group's SEKAI being called Empty SEKAI.
  • Early Game Hell: The game pushes Forced Level-Grinding heavily for a while; cards are barely strong enough to even get C Rank from the get go and the weakest Score type provides barely any EXP, material payouts at the start are low and you need a ton of them to upgrade almost anything, and the story mode requires the player to grind a lot to unlock new cutscenes. Doubly so for Challenge Live, which requires improving Relationship Values to unlock additional deck slots, the first of which unlocks at Rank 13.
  • Earn Your Fun:
    • The MASTER difficulty for each song first needs to be unlocked by scoring 7 or fewer GOOD or lower judgments on a song's EXPERT chart.
    • Since Rank Match only selects Lv. 22 and harder songs, unlocking the mode requires the player to have at least 10 Full Combos on EXPERT and/or MASTER songs.
  • Ensemble Cast: Every unit has their respective stories that can be unlocked and read when the units are leveled up. With the exception of the Virtual Singer unit, no unit is given more focus than the others as of current.
  • Eyedscreen: The game is normally presented in fullscreen, but some 3DMVs have black bars on the top and bottom to simulate a widescreen effect.
  • Famous Ancestor:
    • An's father is the keystone member of the music group RAD WEEKEND, whose musical exploits are nothing less than a modern legend in the current day. Vivid BAD SQUAD's story revolves around them trying to find a musical style to surpass the talent of RAD WEEKEND.
    • Shizuku reveals that her father used to be in a hit band. However, due to hiding his identity often and rarely making live appearances, few are aware of his fame, which has allowed the Hinomori sisters to strike out on their own rather than living in the shadow of their father.
  • Fisher King: To some extent; it is stated that SEKAI (and the Virtual Singers inside it) take a form reflecting the "true feelings" of the people that it is connected to, regardless of whether or not those people are actually aware of them; the goal of the SEKAI in most cases is to help its creators discover the feelings that created the SEKAI in the first place. The Empty SEKAI bends these rules a bit, as Mafuyu has a unique connection to the space (being the original creator), hence its barren and lifeless appearance and the other Nightcord members initially having no influence on its appearance or Virtual Singers. Mafuyu also seemingly possesses low-level direct control over her own SEKAI, as she is seen willingly forcing people out of it.
  • Flashback Episode:
    • Almost all of the "Someday, From the Depths of Despair" event takes place in a flashback, detailing the events leading up to Kanade and Mafuyu meeting online for the first time and forming the first iteration of Nightcord at 25:00.
    • Likewise, a good chunk of the "That Day, the Sky Was Still Far Away" event focuses on Shiho's middle school years, where she met and inspired a girl named Miyu Takagi.
  • Flashy Protagonists, Bland Extras: In the normal world, you can see various extras wandering around in the background. They all tend to be the same handful of models depending on the location and are very uninteresting to look at compared to the main characters.
  • Freemium:
    • In the Japanese version, you can buy a Colorful Pass, which grants 450 Paid Crystal up front, 50 Paid Crystal every day for 14 days, and 2x Challenge Points, 2x Live Points, and 2x Daily Paid Gacha for 30 days. Renewing your Colorful Pass for consecutive months additionally rewards increasing amounts of Crystal bonuses for each additional month renewed.
    • In the Global version, you can buy Colorful Plus (or Colorful+), which comes in Basic, Standard, and Deluxe tiers, which are progressively more expensive the higher you go. Basic is essentially the same as Colorful Pass but without the renewal bonus, granting 1060 Paid/Free Crystal and 20 Bonus Energy Drink S up front, 50 Paid Crystal and 3 Intermediate Practice Scores every day for 14 days, and 2x Challenge Points, 2x Show Points, and 2x Daily Paid Gacha. The Standard tier upgrades ths Crystal cache to 2120 and changes around a few rewards, granting 3 Beginner Skill Scores and 50 Intermediate Practice Scores on purchase and granting 3 Bonus Energy Drink S daily for 14 days, while also doubling the Auto-Play cap. Deluxe goes one step further, giving 6380 Crystal and a massive material cache up front, more material caches daily for 14 days, and also doubles the base Bonus Energy limit to 20.
  • Funny Background Event:
    • Due to being on keyboard, there's parts of some songs where Saki doesn't have to do anything and just dances along to the music while waiting for her parts. It's easier to see in Virtual Lives when the player can see the entire performance rather than what the camera sees in the 3DMV.
    • At the start of Episode 7 of Petit SEKAI, Rui's time machine from Episode 6 can be seen popping into existence in the upper right corner as MORE MORE JUMP! is finishing their latest livestream.
  • Game-Breaking Bug: These types of bugs have become so common since launch that players have begun to refer to the game as "BUG-ject SEKAI".
    • There's a bug that makes Multi-Live room not start even after there are 5 players in the room. The developers have released a patch note to address this problem in their next update.
    • There's also a rare reported bug where a player's score gain is drastically lowered during Live, not even reaching 4 numbers after full combo-ing a song.
    • Another particularly destructive bug caused players to lose their accounts if they filled up all ten of their team slots.
    • Another Multi-LIVE related bug. The global score bar sometimes will display a result of lower rank despite getting higher rank. (For example, results is C despite global score bar reaching the B rank line or in some instances, halfway to A). It also affects the rewards given afterwards.
    • Tapping on certain screens such as the homescreen too quickly can lead to the entire screen disappearing, rendering the game unplayable. The only way to fix this issue is by restarting the app.
    • For some players, the music shop merchants have disappeared, rendering them incapable of purchasing newly added non-event songs and Another Vocals from the shop. Word of God confirmed that they have no solution for this bug, as they are unable to replicate it themselves.
    • Using a system language that uses commas instead of decimal points severely messes with how the game reads internal values. This causes a lot of unwanted behavior, such as bizarre UI scaling during gameplay and some charts being rendered Unwinnable by Mistake due to the game incorrectly interpreting the given BPM for certain track segments.
  • Game-Favored Gender: Inevitable due to the Improbably Female Cast, but Project Sekai is affected by this.
    • Male characters are incredibly shafted in the outfits department. They have access to gender-flipped versions of almost all of the base female outfits and vice versa, but any gacha outfits are strictly gender-locked. There being far fewer 4★ for the six men in the game makes it difficult for them to get more outfits. If one were to leave out the mission pass outfits, by the time of the games first anniversary the female character have been given over 50 outfits versus the male characters having a little over 10.
    • There are more female character covered songs in the game than male ones. There are male-only covers, however, and very few female/male covers.
    • Averted Trope in the case of card rarity distribution by gender, as it seems that the creators are attempting to avoid this with the Halloween 2020 Gacha that consists exclusively of high rarity male characters. This is significant as it follows two events and three gachas where high rarity female character cards were released back to back. The June Bride themed Gacha was also male-only, and event shop wise the only female character in the event was An. That said, even in the events story, she only showed up toward the end.
    • As the first anniversary outfit Gachas are locked to the respective unit on the banners and the Virtual Singers, the female Virtual Singers benefit somewhat more from it as they have an outfit with every unit while KAITO and Len only have outfits with their unit, Vivid BAD SQUAD and Wonderlands x Showtime, the latter two only being because there were male characters in those units.
    • The female Virtual Singers have received more song, story, and card diversity during the games first year due to their quicker appearances across Sekai.
  • Gameplay and Story Integration: The original songs introduced for 25-ji are treated in-story as Kanade's attempts to help others, such as "kagirinaku haiiro e" being her response to Ena's troubles during the "Unsatisfied Pale Color" Event.
  • Gameplay Automation: A feature called "Auto Live" was added in a post-release update. This allows you to auto-play through songs and get rewards for doing so; this is geared towards players who don't have time to sit down and play the songs themselves, especially during events. However, to balance this against manual song plays, notes hit in Auto Live give "AUTO" note judgments that only give half the points compared to normal, Auto Lives don't track combo and don't count towards any song completion rewards, and you can only use the feature up to 10 times a day.
  • Gender-Equal Ensemble: Wonderlands X Showtime and Vivid Bad Squad both have two guys and two girls each, not counting their respective virtual singers.
  • Genre Mashup: The game's theme song, "Wah Wah World", is a bit strange, featuring Mitchie M's signature cute pop/EDM fused with Giga-P's electronic punk music, alternating between the two styles throughout the song.
  • Gender-Neutral Writing: Played with with Mizuki, who is variably referred to as either "they/them" or "she/her" depending on the character, since not everyone knows about their Ambiguous Gender and thus use the pronoun that they think is appropriate.
  • Good Parents: Those who were relatively well-adjusted, in light of the Dysfunction Junction of the cast, often had this. At least for those who had their parents mentioned. An, for example, had a closer relationship with her parents and being a Daddy's Girl, and Kohane often mentions of how her parents support her new endeavor in joining An, Akito and Touya to create an event that will surpass RAD WEEKEND in the story from time to time.
  • Hard Mode Perks: Harder difficulties drop better and more quantities of rewards than the others, making grinding the harder difficulties more worth using energy on.
  • Improbably Female Cast: Gender ratio is heavily skewed towards females; of the original characters, there are only 4 males among the main cast. With the virtual singers included in the ratio, that makes 6 male characters, 19 females, and Mizuki.
    • The game has an unlockable title for clearing an amount of lives with a team of only male characters.
  • Inconsistent Dub:
    • In COLORFUL STAGE!, all game-original characters are referred to in Western name order (first name first), while all Virtual Singers are referred to in Japanese name order (last name first). This is due to Crypton Future Media, which enforces Japanese name order as the proper way to refer to their characters regardless of region.
    • COLORFUL STAGE! uses the official English title for "Hatsune Miku no Shoushitsu", "THE END OF HATSUNE MIKU", rather than the more-commonly accepted "The Disappearance of Hatsune Miku" that was also used in the official translations of the Project DIVA games.
    • COLORFUL STAGE can't seem to figure out how they want to translate "Aibou" into English. While "Aibou" is generally translated across media as "partner", which is also how most English-speaking Project SEKAI fans translate it, Project SEKAI has sometimes opted to translate it as "Buddy", as seen in the "Bout for Beside You"'s "What's up, Buddy?" hair clips, the event title "Buddy Funny Spend Time", and the "Buddy" cup in the SEKAI 2DMV cover of "Traffic Jam". However, COLORFUL STAGE has used multiple different translations for it depending on the context, coming up with translations such as "partner", "buddy" and even "coworker".
  • Insistent Terminology:
    • "Virtual Singers", not "VOCALOID". This is an actual term used by Crypton Future Media to refer to their characters, since the VOCALOID name and software is owned by Yamaha.
    • While other characters get birthdays, the game is particular to refer to Virtual Singers having "anniversaries" rather than "birthdays".
    • When referring explicitly to the Sekai, the in-universe Pocket Dimension music worlds, the term is always spelled in katakana ("セカイ") rather than spelling it in its kanji form, meaning "world" in Japanese ("世界"). In COLORFUL STAGE!, the word is rendered as "SEKAI" in all capitals like the Japanese title, rather than being translated.
  • Jiggle Physics: Notably apparent on Meiko's Live2D model being that she's the character with the largest bust.
  • Kayfabe Music: The concert Colorful Live - 1st Link - has the projected models of the original characters and Virtuals Singers performing while a real band plays in the background, similarly to Magical Mirai.
  • Kids Are Cruel: There's an alarming number of characters whose backstories involve being the target of bullying during their middle school years.
  • Late-Arrival Spoiler: Event stories assume that you've already seen the entire main story and that you're watching the events in release order, so plot details from both the main story and past events can get spoiled with little fanfare in later events.
  • Licensed Game: As the Project DIVA series, but unlike most Vocaloid-themed rhythm games, the Crypton Vocaloids themselves share the spotlight with a cast of Original Generation characters.
  • Logo Joke:
    • The app boots up with one of the characters shouting "SEGA!", followed by another saying "Colorful Palette! From CraftEgg!". Following the development shift in early 2021, the "from CraftEgg" portion was dropped.
    • Weaponized in Episode 5 of Petit SEKAI, where Mizuki suggests meeting at 9PM instead of 1AM, cueing a "21-ji, Nightcord de." logo cut-in. This gets derailed over the course of the night due to scheduling conflicts, with each successive postponement cueing a new "logo" with increasingly bizarre names.
  • Limited Wardrobe: Played With. Discounting the unlockable outfits that the players can obtain from mission pass or high rarity Gacha cards, the characters are rarely ever seen in outfits outside of their default outfits and school uniforms ... at least in their Live2D models. In their cards, they'll often be shown wearing different outfits, though these are very rarely translated to their models.
  • Market-Based Title: The English title drops the original "Project SEKAI" name completely and puts the "Hatsune Miku" name up front. While no official word has been put out as to why, it has been theorized that this may be because of a naming conflict with Western visual novel localization company Sekai Project.
  • Medium Blending: The 2DMV for "Tokugawa CUP NOODLE Kinshirei" involves 2D animation, photorealistic CGI Cup Noodles cups, and a live action cat.
  • Meet Cute: Ichika and Kanade meet for the first time in the "Intersecting Melodies, Glowing Warmth" event when they reach out for the same CD at the music store. Amusingly, the first thing they notice about the other is their hair.
  • Meido: The "Ai no Material" 2D music video has MORE MORE JUMP! and MEIKO dressing up in maid cafe-style maid outfits. Obtaining the relevant 4★ Haruka or Shizuku cards from the gacha also allows players to buy their maid outfits for any of the girls.
  • Mirror Character: Every Sekai version of a Virtual Singer reflects the characteristics of the original character they're associated with in some way. For example, MORE MORE JUMP's version of Len Kagamine shares his dazzling idolish charm with Haruka, which was spoofed in an official 4koma following his debut.
  • Microtransactions: Per the norm with Japanese mobile games, Project Sekai has microtransactions.
    • Players can do one discounted paid solo per day, which is 100 paid crystals versus 300 free crystals. Two if they have Color Pass activated.
    • Players can use paid ingame currency for a discounted 10-roll (1500 paid crystals vs the standard 3000 crystals).
    • There's also sometimes limited time gacha banners that guarantee a 4 star but you have to pay the 3000 crystals using paid crystals.
    • The Premium Mission Pass costs real world money. Paying for it will allow the player to obtain Premium rewards from Live Missions available ingame. It also comes with whatever costume Premium Pass has for the month.
    • Color Pass is useful for the Premium Pass as it boosts the number of Live points the player obtains which makes getting the rewards faster. There are other benefits for buying the Color Pass as well, as the player gets an increasing amount of Paid Crystals everytime they buy it, as well as free crystals across logging in for 14 days. It also gives the player an extra discounted solo per day for as long as the pass is active. The pass costs real money, and is around four dollars usd, or 480 yen.
    • The game has several monthly packs called "Value Packs" which gives paid crystals (Gacha Tickets after the first anniversary) and materials needed for other parts of the game. In that same section, the player can buy music cards, stamp sheets (needed for obtaining stamps at a quicker rate) and they can buy Live pts for their mission pass.
    • The game introduces first anniversary costumes for each unit, including the Virtual Singers. However, unlike shop outfits that can be crafted for free, these outfits cost money and are attached as bonuses to a paid gacha that can only be rolled once per unit.
    • Connect Lives are special types of Virtual Lives that you must buy a virtual ticket with real money to attend. The main distinction is that unlike the regular Virtual Lives, Connect Lives are essentially analogous with real concerts; they go on for longer (1-3 hours), get special key art and names, add the ability for the cast to interact with the audience in real-time, and have real merchandise. Non-paying players can attend Rehersal Lives instead, which cost 100 Crystal for a ticket but have fewer characters, shorter songs, and only last 30 minutes.
  • Miracle Rally: The "Operation Secret Valentine" Cheerful Carnival event in February 2022 ended with Team "Give Gifts" winning by a margin of just over 17,000 points. This is notable because for the rest of the week, Team "Receive Gifts" was leading throughout the entire event and prior to this a trailing team had never won a Cheerful Carnival.
  • Missing Mom: Played with. While a lot of the mother characters aren't absent, they aren't treated as important to the respective character stories compared to some father characters, such as An, Emu and Ena's fathers, and have few speaking roles relegated to voiceless text boxes. The only exceptions to this are Mafuyu's mother, who is partially the reason for Mafuyu's current characterization, and Kanade's mother who is deceased. To note, the only mother character to have a Live2D model is Kanade's mother while the rest remain as The Unseen.
  • Mood Whiplash: "Shoujo Rei" sounds fairly melodramatic and airy for a summery song, but its 3DMV suddenly cuts to a Smash to Black at the end of the song, leaving only the fading lights and sounds of the railway signal and brief stills of Haruka, Shizuku, and Miku standing on the railroad tracks before they vanish altogether. It makes more sense when you realize that the song is about Star-Crossed Lovers and suicide.
  • Motifs: Occurs in the gacha cards released with the corresponding events they feature in. With the 4*'s featured having unlockable clothes. Some notable examples include:
    • Alice Allusion: An Alice dress unlockable at the start of the game. The gacha featured in the WonderlandXShowtime focused event, "Wonder Magical Showtime" has Alice in Wonderland motifs with the featured characters in the gacha and event rewards dressed as the residents in Wonderland in their uncapped art, such as Nene as the Caterpillar.
    • Fairytale Motifs: The gacha corresponding the 25-Ji Nightcord de focused event, "Mirage of Lights", had a Snow White theme with the group's cards being the cast as different aspects of Snow White throughout the tale that mimics their state in the event. The gacha corresponding the "Mesmerized by Mermaids" event also has Little Mermaid motifs as well.
    • Tarot Motifs: The cards for the "My Footprints, Your Destination" event are themed around tarot cards. Mafuyu and Ena's cards are based on The Hermit, Mizuki's card is called "Hermit Reverse", MEIKO's card is based on Justice, and Kanade's card is based on The Hanged Man.
  • Multiple Demographic Appeal:
    • The Improbably Female Cast makes it clear that the game is targeted towards young adult men first, but the game makes an effort to appeal to a wider base with the inclusion of Bishōnen male characters, compared to similar gacha games that predominantly feature only men or women. Mizuki's Ambiguous Gender has also proved popular with a wide variety of players.
    • There's also the fact that by music alone the game features a huge variety of songs and also makes an active effort to include more recent hits while also including a larger selection of classics, drawing in both older and newer Vocaloid fans alike.
  • Mythology Gag:
    • The concept of the Sekai is essentially an extension of the Element Clouds in Project DIVA X, itself a reworked version of the song categories from the very first Project DIVA game.
    • Difficulty colors are carried over from the main series with the addition of EX EXTREME's purple color: blue (Easy), green (Normal), yellow (Hard), red (Expert), and purple (Master).
    • One of the Premium Mission Pass outfits is the hoodie that Mikito-P's avatar wears on the cover art for "Roki", complete with the paper target stuck to the character's head.
    • Unlike most of the other returning songs, which feature different cuts compared to their appearances in the DIVA series, "The Intense Voice of Hatsune Miku" uses the exact same cut as the DIVA version but using the 2017 remake instead of the original.
    • "Glory Steady Go!" namedrops "SEKAI", "mirai", and "DIVA" in its lyrics, alluding to the three titles under the SEGA feat. HATSUNE MIKU Project banner.
    • KAITO and MEIKO's unique Kizuna Rank title is "First Singers", alluding to them being the first two VOCALOID characters created by Crypton Future Media.
    • Miku and Luka's unique Rank 46 Kizuna Title is called "Someday's Dancehall", alluding to wowaka's song "World's End Dancehall" in which Miku and Luka duet.
    • Good Smile Company illustrated official artwork of Mikudayo and Nenerobo for the CUP NOODLE collaboration campaign. Mikudayo is a botched attempt at a costume based on a Hatsune Miku Nendoroid, which Good Smile manufactures.
    • Rin uses a Gibson Les Paul for the 3DMV of "Lost One no Gokouku" as a nod to the song referencing the guitar by name in the first verse.
    • The music video for the April Fools' Day version of "Aoku Kakero!" prominently features lots of flying music notes as a tribute to the original "Pocari Sweat" campaign video.
    • The games art style is a stylized version of the Crypton Vocaloid's V3-V 4 X software box art by iXima, just as Project Diva art style was based on KEI's box art.
    • Most, if not all of the games official art used for the official Twitter and [2DMV=]'s are by artists that previously worked on the music videos for various famous Vocaloid songs. In some cases, the artists for those official videos may return to do work on the SEKAI versions of the songs, such as akka, who famously did the art and animation for "Otome Dissection", returning to work draw art for and direct the SEKAI 2DMV.
    • Some of the 3DMVs pay tribute to the original videos for their songs.
      • "Rettou Joutou BRING IT ON" has barbed wire and yellow tape appearing at the edges of the screen during the chorus, similar to the ones that appeared in the original video. The dance routine also adapts the choreography used for its appearance in "Magical Mirai", but for four dancers instead of two.
      • The Original Generation song "A Future Written as Regret" has a Freeze-Frame Bonus of the origami crane that appears in mafumafu's MV.
      • The stage variant that Leo/need uses for "Teo" features the library from the original MV outside the window.
      • "Nostalogic" has a new 2D music video that is heavily inspired by its video in Project DIVA F, including the Blue Crystal outfit and the city scenery in the background.
      • The new music video for "Just Be Friends" features a lot of imagery that appeared in the original version (which cannot be used for legal reasons).
      • The 2D MV for "Keitai Renwa" also features some visual similarities to the MV used by mafumafu, especially during the chorus segments.
      • The outfit Miku wears in the "Ren'ai Saiban" 2DMV hybridizes the "judge" outfit from the original music video with elements of Miku's "Stage Sekai" design.
      • The 3DMV for "Children Record" has the screens on-stage colored according to the signature colors of the Mekakushi-dan alongside their corresponding numbers within the group (including a red "No. 0" for Ayano).
      • The chorus for "ray" has the stage changing to a setpiece similar to the screens used in the original music video to show Miku singing alongside BUMP OF CHICKEN.
      • The 2DMV for "Lower" has a forest and a flaming witch's hat appearing in the background during the instrumental between the first chorus and the second verse, alluding to nulut's music video for the song.
      • The full version of MORE MORE JUMP's Dreamin' Chuchu 2DMV is released in Valentines 2022, referencing to the lyrics in the song, "After all today's valentines".
  • Necessary Drawback: You can buy an item that boosts Miku specifically in every single Sekai. It's much cheaper to buy this item in both material and monetary costs, but each one boosts her by only 0.4% per purchase compared to the 2% per purchase that everyone else gets, and the 0.2% boost for items that boost all Virtual Singers.
  • Never Trust a Trailer: Project SEKAI's advertising isn't always true to what happens in the game, such as presenting the Virtual Singers, particularly the original ones, as having bigger roles than they actually do or placing certain pairs of characters in 3DMV's that they don't actually sing in.
  • Never Say "Die": "Disappear" is the English script's choice of Deadly Euphemism when referring to suicide.
  • Nominal Importance: The main characters do talk to characters outside of the main cast at times, however these characters are more often than not unnamed, receiving generic titles such as "Student A" or "Student B" to differentiate them.
  • Not-Actually-Cosmetic Award: Clearing achievements nets Titles, which can be equipped on your profile card for other players to see during Multi-Lives. While most are cosmetic in nature, some of them grant passive boosts to your Team Power after they've been earned.
  • Nintendo Hard: The game offers difficulty ratings challenging to all skill levels, but its MASTER difficulty is home of some of the most difficult charts to ever grace mobile rhythm games, with the Level 33 and Level 34 charts having players wondering how much more sadistic the chart makers can possibly get.
  • One Degree of Separation: All of the groups are connected to each other via at least one member; two of Leo/need's members have siblings in MORE MORE JUMP! and Wonderlands X Showtime respectively, while Akito from Vivid BAD SQUAD is the younger brother of Ena from 25-ji, Nightcord de. Some of the characters are also classmates with each other or interact with another character at different occassions, such as Kohane being in the same class as Minori, and Honami working part time as a housekeeper of the Yoisaki household.
  • One-Gender School: Miyamasuzaka Academy is an all-girls school. The other school introduced in-game, Kamiyama High, is a coed school.
  • Original Generation: In addition to all the human characters being unique to the game, the game continues the tradition of songs made exclusively to appear in the game, such as the game's theme song "Wah Wah World" (by Giga-P and Mitchie M) and Leo/need's theme song "needLe" (by DECO*27).
  • Origins Episode: Someday, From the Depths of Despair goes into how Kanade and Mafuyu first met in real life and began working together.
  • Out of Focus: Virtual Singer focus distribution tends to be... uneven, so to speak. As a rule of thumb this applies to all of them in general because the game is mostly about the original characters in the first place despite being a game that's all about Vocaloids and Vocaloid music, but some notable examples:
    • Ironically, most of the original songs that aren't for Leo/need tend to treat the joining Vocaloid as more of an afterthought, with most of the Virtual Singers having very few solo lines and otherwise only joining in alongside another singer where they tend to blend in.
    • In a possible effort to combat the issue of Miku typically getting the lion's share of the focus, most events, covers, and new cards after the first few months have brought in Virtual Singers other than Miku; however, this resulted in Miku herself getting shafted in various ways despite literally being the title character.
      • Of All the Miku's introduced, Classroom SEKAI's Miku is the only one who had been introduced since launch, but did not have any other additional cards of her until April 2021's event, "Singing With You in A World Where Cherry Blossoms Dance".
      • Stage Sekai Miku has taken Leo/need Miku's slot in having no cards since her initial one from the launch Gacha, as at the time of the games first anniversary, it's her only card after the obligatory 1 star card that all the other Miku versions have. It took over a year for Stage SEKAI Miku to receive her second card, which was a 3★ from the end of the year mixed event "Beyond our Prayers, The Tommorrow We Hope For".
      • Crazy enough, Street SEKAI Miku was not featured in any non-commissioned SEKAI covers for over an entire year until "Alter Ego" in November 2021.
      • The "Evillious Chronicles" collaboration gacha featured new 4★ cards for every Virtual Singer in the game... except Miku. Miku did get a card based on her "Margarita" appearance in the series, but only as a free 2★ with no side stories. That said, this is justified as she received a limited card much earlier than the other Virtual Singers in the Colorful Festival Gacha alongside the other unit leaders.
    • Luka didn't have any 3DMV appearances until "Color of Drops", four months after the game initially released.
    • Vivid BAD SQUAD's incarnation of MEIKO is the only version of MEIKO that doesn't sing with her subunit despite it being the subunit she was assigned to at launch and early trailers seeming to suggest otherwise. While an early area conversation seemed to imply that she would sing with the unit someday, that hasn't happened as of the games first anniversary.
    • Len and KAITO were left around in their base SEKAI (or SEKAI(s) in Len's case) for a long time, giving them little opportunity for card and song diversity as well as interaction with the rest of the cast. It wasn't until Happy Lovely Everyday for Len and STRAY BAD DOG for KAITO that they would finally start to appear in other SEKAI other than their base ones. That said, by the time of the games new year anniversary, they have yet to complete SEKAI appearances with both being a 25-ji introduction away. Meanwhile, the other Virtual Singers have already done so as of Luka's Vivid BAD SQUAD introduction in the event "Same Dreams, Same Colors" and are on their second SEKAI card rotations.
    • In terms of cards, the original Virtual Singers save for Miku have been shafted in this department due to the nature of the Evilious collaboration cards. While the collaboration limited cards are treated as cards of the original Virtual Singers from a gameplay perspective, they aren't actually them as we know them, as shown by their personalities and backstories being based on the Evilious Chronicles characters rather than the Virtual Singers we see in the game. Meanwhile, Miku got a limited Colorful Festival card for her original self and an Evilious card for that incarnation of her.
    • KAITO and MEIKO barely have any of their original songs in the game. As of the games first anniversary, KAITO has "Doctor Funk=Beat" and MEIKO has "Nostalogic". Together they have "On the Rocks", while with the other Virtual Singers they have "Blessings", but that's it in terms of songs that existed before Project SEKAI for MEIKO, though KAITO later received "Cendrillion" with Miku.
    • For non-Virtual Singers, there are instances where certain group members are shafted in commissioned or cover songs because the song focuses on one or more characters:
      • Almost all Leo/need songs are this for characters that aren't Ichika and Miku, as the group follows a band format in which they have a lead singer while the others play instruments. That said, recently the group members have begun to sing alongside Ichika more lately, though she is still prominently featured alongside Miku.
      • Vivid BAD SQUAD has two Vivids-centric commissioned songs in which Akito and Touya barely sing; "READY STEADY" where they're relegated to splitting Len's original rap lines between each other and chorus (Despite it being the groups Image Song), and "Forward", where they exclusively sing chorus without any solo lines. Ironically, the BAD DOGS focused commissioned songs "RAD DOGS" and "Cinema" give An and Kohane a little more to do, as they not only have solo lines in both songs (Though fewer than Akito and Touya), "RAD DOGS" also gives them an Another Vocal for the song. So far, Akito and Touya have yet to receive an Another Vocal for a Vivids-centric commissioned song, though line distribution between all the groups members in recent songs have improved.
      • Wonderlands x Showtime has Chururira Chururira Daddadda!" in which the song is primarily sung by Nene and Emu, whereas Rui and Tsukasa are relegated to small duet parts and chorus. There's also the commissioned song "Nijiro Stories" in which Tsukasa and Emu don't sing at all despite appearing in the music video. In the actual song, KAITO and MEIKO sing along with Rui and Nene instead, making it the first and currently the only commissioned song in the game to use two Vocaloids in place of the group members.
  • Painting the Medium:
    • The MASTER chart for "Teo" has a pair of hold notes rapidly swinging across both ends of the lane during the line "yurayurayurayura" (a Japanese onomatopoeia for swaying). The line "kirakirakirakira" (an onomatopoeia for sparkling) also features multiple small gold hold notes in the form of sparkles.
    • "Your Adventure Log Has Vanished!" MASTER likes this one, such as two hold notes shaped like an O when Len says "Oh!", two hold notes shaped like thumbs-ups during the line "so good!", a pair of hold notes shaped like a dungeon map, and a large critical hold note that resembles a cross.
    • "Just Be Friends" has golden critical notes shaped like teardrops during the line "dareka no namida".
    • The EXPERT and MASTER maps for "Roki" has series of hold notes spelling out "ROKI" and "ROCK N'ROLL", respectively.
    • The HARD and EXPERT maps for "Dance Robot Dance" have flick notes corresponding to the "up, side, up side down" lines.
  • Palette Swap: Every unlockable MV outfit has four different color variations. The first color is available by default while the other three need to be unlocked before they can be equipped.
  • Player Personality Quiz: After the introductory cutscene, you're given a short three question quiz that determines which group's intro cutscene you should watch first. Of course, you're also free to ignore the results of this quiz completely and choose whichever group you like, and the cutscenes you didn't watch are available after the intro.
  • Player Versus Player:
    • The Half Anniversary update introduced a new event format called Cheerful Carnival Event, an extension of the Multi-Live system where players join teams Splatfest-style and ally with four other teammates to compete against opposing 5-player teams for the highest score. Winning teams get additional rewards in addition to the standard event prizes.
    • The 1.5 Anniversary update introduced a proper PVP mode called Rank Match, where you compete against another player for the highest score. In this mode, Team Power and Skills are disabled and your score is determined soley by the number of PERFECT, GREAT, and GOOD judgments you earn. Winning duels moves you up a rank ladder where you can face stronger opponents at higher tiers.
  • Play Every Day:
    • The game encourages players to keep coming back with daily log-in bonus's. Launch month also has them state that they'll add new songs that can be played every day for the entirety of the month.
    • There's also a LP point ladder that rewards Crystals and Coins when certain points are accumulated. It is encouraged to play everyday to get all of the rewards.
    • The 1.6.0 update added a stamp card to Challenge Live that grants additional rewards for showing up to complete your daily Challenge Live play.
  • Pocket Dimension: The various Sekai that the player and characters can visit. There are currently five of them aligned with the different units and their aesthetics, and each one designated a version of Miku along with another virtual singer. The only exception is the Empty World which only has a version of Miku and no other virtual singer. At least until "Unsatisfied Pale Color".
  • Power Equals Rarity:
    • 4-star cards are more powerful than any other card rarity and are notably more difficult to obtain.
    • Downplayed with Ribbon/Birthday rarity cards, which have a single pink ribbon for a rarity tier in place of stars. They are a type of limited card that can only be pulled from a special birthday banner available for around a week during a character's birthday, and have a pull rate on par with 4-Star cards with the only difference being an added "fixed pity" where the card is guaranteed within 100 pulls. However, Ribbon rarity cards are functionally "3.5-Star" despite their limited availabilty window and pull chance, as they are weaker than 4-Stars, have esoteric skills of debatable utility, don't have special flavor stuff like Card Stories or Costumes, and require 1000 Emotion Fragments to Master Rank compared to the 50 for 3-Star and 2000 for 4-Star.
  • Power Up Letdown: Each SEKAI has an item that can be used to boost Virtual Singers. This sounds like it would just universally boost the stats of any Virtual Singer character... except it doesn't; it works the same way as the Unit boost items in that it only boosts non-unit Virtual Singer cards. Prior to the Evillious Chronicles collaboration this essentially made the items virtually useless since there were no Virtual Singer Unit 4★ cards besides Miku's ColorFes card; with the Evillious Chronicles collab all Virtual Singers have a Virtual Singer 4★, but the cards are still Awesome, but Impractical for tiering in events.
  • Powered Armor: A particularly humorous scene in the "Exciting Picnic!" event has Rui going off on a very wordy and rapid tangent about an exoskeleton he invented that would augment the wearer's physical strength. It was apparently designed so Tsukasa could wear it and swing across the stage on a rope Tarzan-style.
  • Product Placement: All of the instruments used by members of Leo/need and their respective Virtual Singers are modeled after real instruments.
    • Ichika: Fender American Original '60s Telecaster in lake placid blue.
    • Saki and Rin: KORG KROSS 2 61-Key Synthesizer in gray-orange
    • Honami and MEIKO: Yamaha Stage Custom in Cranberry Red
    • Shiho: Fender American Elite Jazz Bass in ebony/ocean turquoise
    • Miku: Fender Stratocaster
    • Luka: Fender American Standard Precision Bass
    • MEIKO: 1960 Mosrite The Ventures in candy apple red
    • KAITO: Gretsch G5655TG Electromatic Center Block Jr. in azure metallic
  • Production Throwback: To both CraftEgg's BanG Dream! Girls Band Party! and SEGA's Chunithm:
    • "The Disappearance of Hatsune Miku"'s MASTER chart appears to be inspired by its Chunithm MASTER chart.
    • The EXPERT chart of "Rokuchounen to Ichiya Monogatari" is essentially the Expert and Special charts of the same song in BanG Dream combined, which according to the developers was intentional; the intention was for players to "grin in response to the charting".
    • The SEKAI version of "Lost One no Gotoku" EXPERT recycles more than a few chart elements from its BanG Dream EXPERT chart, which is also a Lv. 26.
    • Many parts of "End Mark ni Kibou to Namida wo Soete" MASTER are copied wholesale from its CHUNITHM MASTER chart.
  • Pronoun Trouble: Due to the use of Ambiguous Gender, Mizuki's pronouns are hard to pin down; they are generally referred to gender-neutrally by other characters, while Mizuki themself uses "boku", which would normally convey either a male disposition or a Bokukko but in writing this is explicitly spelled in katakana instead of kanji, leaving the matter muddy. Most English-speaking fans use they/them, and COLORFUL STAGE! evades the question by having different characters use different pronouns according to how they perceive Mizuki's gender.
  • Punny Name: Leo/need is named after the meteor showers of the same pronunciation (which is also why their band logo has a shooting star). The name of their theme song is also just the band name in reverse and the "o" dropped.
  • Real Men Wear Pink: The "Beat Eater" 2DMV has Vivid BAD SQUAD decked out in pink and black attire, including Len, Akito, and Touya. Touya even sports a big, fluffy pink hoodie.
  • Regional Bonus:
    • In lieu of the Colorful Pass, which rewards a small amount of Paid Crystal and gameplay enhancements for 14 days with bonus Paid Crystal for renewing multiple times in a row, COLORFUL STAGE has "Colorful Plus", which features a "Basic" tier (identical to Colorful Pass) as well as "Standard" and "Deluxe" subscription tiers that offer additional gameplay bonuses on top of Colorful Plus Basic and more materials and Paid Crystal in exchange for higher fees.
    • COLORFUL STAGE! has shorter events to allow the game to catch up to Project SEKAI, but event shops are 10% cheaper in return.
    • The Chinese version received a unique mini-event for Chinese New Year 2022, where players can receive a set amount of points for every Solo Live, Multi-Live, and Challenge Live played and obtain rewards for hitting specific point totals in addition to a standard leaderboard.
  • Relationship Values:
    • Clearing certain tasks corresponding to each character earns Character EXP, which improves Character Rank when enough EXP is earned. In addition to providing small stat boosts, ranking up a character provides rewards such as Crystals and Vocal Tickets, which can be used to purchase Another Vocal Ver. songs at the music store.
    • The December 2021 update introduced Kizuna Rank, a system where playing songs earns Bond EXP between the Leader (a card set in the first slot of the team) and the rest of the team, with the Subleader (the card in the second slot) earning a higher amount of EXP. Leveling up Kizuna Rank between two characters can earn prizes such as new voiced interactions, items, and special combo titles.
  • Revenue-Enhancing Devices:
    • Connect Live, a large-scale version of a Virtual Live that features full-version songs and characters reacting in real-time to messages that you send to them, requires you to buy a virtual ticket with real money to attend unlike the standard Virtual Lives. Non-paying players can opt to attend a "Rehearsal" version of Connect Lives that only charges 100 Crystal for entry, but features fewer characters and game size songs, and only lasts 30 minutes (compared to the full 1 hour concert).
    • The first anniversary Gacha outfits are this as well, arguably. Unlike the Miracle Ticket Gacha, which at least gives the players a 4-star Gacha ticket that allows them to pick any non-limited 4-star in the game up to Awakening Beat, the player is given the opportunity to use 10-roll which costs 3000 paid crystals for one outfit per unit and all of it's color-swapped versions as a "bonus". The outfits are locked to the unit on the banner as well as the Virtual Singers, meaning that unlike the shop outfits and outfits unlocked through the Gacha, they can't be crafted and worn by other characters. As well, the outfits being obtainable for the Virtual Singers only really benefits the female ones, as they can wear an outfit from every unit while the male Virtual Singers only have outfits for their unit, Vivid BAD SQUAD, and Wonderlands x Showtime, solely because those 3 units have male characters to assign outfits to. Essentially, the banners are just another way for Colorful Palette to make money and don't really benefit the players to roll on unless they care about dressing up the characters or simply want to collect every possible outfit the game has to offer.
    • Birthday cards. They're the rarest kind of cards in the game due to only being available at the time of the characters birthday, though their debatably useless skill, lack of an outfit, the fact that they're available in the gacha at a 4★ rate and the expensive Master Ranking requirement make them not worth rolling for unless you really like the character or are a collector. On the other side, they clearly exist as a new way for developers to earn money along with the other things that were announced during the first anniversary.
    • The change from two outfits per banner to three. While at first glance this seems like a good decision to some as it gives players more reason to want the third banner 4★ for more than just it's skill, it also serves as a way for Project Sekai to up the amount of limited cards that are released in a months period since limited banners now can have three limited cards instead of just two, which would earn them more money from the banner especially in scenarios where the third 4★ is a popular character.
  • Running Gag: Kanade's attempts to turn the Empty SEKAI into her private workspace. Also complaining about the lack of power outlets in the Empty SEKAI, which would help her use her PC.
  • Sempai Kouhai: Tsukasa and Touya have this relationship, with Tsukasa being the quirky outgoing sempai and Touya being the cool and reserved kouhai. Despite their clashing personalities, Touya holds Tsukasa in high regard and credits him with helping him find his way in life.
  • Set Bonus:
    • Unit items and type-boosting foliage give double their stat bonus on if every card in the team is of the same unit or type, respectively.
    • The 4★ Virtual Singer cards introduced in the "Cherry Blossoms Across SEKAI, Interconnecting Our Feelings" event gain an additional 10% score bonus for each card in the same team of each character's corresponding unit, up to +50%; however, as they are of the Virtual Singer unit, fielding them requires you to give up your actual set bonus.
  • Shout-Out: One of the yonkoma panels shows Nene controlling the Nene-robo like a video game character, with the Nene-robo performing a Shoryuken.
  • Sick Episode: In the "Mirage of Lights" event, Mafuyu falls feverishly ill and passes out in the park. Kanade accidentally finds her and brings her to her apartment to nurse her back to health, where Mafuyu has a flashback to her childhood.
  • Sliding Scale of Plot Versus Characters: Almost completely towards the "characters" end, as virtually the entire story of the game is character-driven.
  • Socialization Bonus: Playing Multi-Live/Co-Op with other players rewards significantly more goodies at the end of each song, and if you're not strong enough to get high ranks yourself, doing Veteran/Pro multiplayer can help get those elusive high ranks on songs. There's also titles tied to how many players you have on the Friend List.
  • Spiritual Successor: To CHUNITHM, as evidenced in the variable-width notes, the way slide notes look and are designed, and the flick notes that look just like Chuni's AIR Notes. It's also one to the Project Diva series.
  • Spotlight-Stealing Squad:
    • Miku is very guilty of this (her name's on the title!), but later content has gone out of its way to avert this, with many covers and commissioned songs after the first few months prominently featuring Vocaloids that aren't Miku. The only version of Miku that continues this trend is Leo/Need Miku, who sings most of Leo/Need's songs along with Ichika, even if she isn't Virtual Singer featured in the event.
    • Wonderlands X Showtime characters are very frequently featured in mixed unit events, with characters from the unit appearing in "Run! Sports Festival!", "KAMIKOU FESTIVAL", "Sekai's Happy New Year", "Resounding Twilight Parade", and "The Tenma Household's Hinamatsuri". The only mixed unit event that a WonderShow character doesn't appear in is "Singing With You in a World Where Cherry Blossoms Dance".
    • Leo/need invariably features Ichika singing in every song, with the other band members only getting some solos at best. This is at least justified since they are the only unit in the game with a "band" format, and Ichika is the lead singer.
    • During the games first year, the female Virtual Singers have received much more story focus than the male counterparts due to their far quicker appearances across Sekai, giving them more opportunities to establish relationships with each Sekai's original characters, as well as more card and song diversity. It had gotten to the point where players had begun to wonder if the male Virtual Singers would appear in the other Sekai at all before Len finally appeared in MORE MORE JUMP's Sekai during the event "Happy Lovely Everyday!".
    • Since launch, the Kagamines have been up there with Miku when it comes to song focus, to the point where this may be the only part of the game where Len hadn't been shafted during the games first year.
    • The unit leaders. With the exception of Ichika, who triples as part of the "leader group", designated Series Mascot, and the biggest Audience Surrogate due to her representing Virtual Singer fans, the other unit leaders aren't that much more important than the members of the groups beyond the main story, and not even in it in some cases. Despite this, they're given more advertising focus than the other characters in their units, and are gradually working their ways up to being treated as series mascots along with Ichika now that they're the only original characters featured on the home screen after the games first anniversary. In her fes story, original Miku summons the group leaders to her Sekai to thank them for taking care of her other versions. It's unknown if she's done something similar for the other members of each group, or if her summoning these characters was entirely coincidental from a story standpoint.
    • Despite what advertising might show, the original characters are the predominant focus of the game while the Virtual Singers are relegated to playing supporting roles to varying degrees of importance. In some events, a Virtual Singer might be present in three or less of the event story chapters, even if they received a high rarity event card. It likely doesn't help that the event stories tend to take place in the real world, where only the original characters can go and the Virtual Singers can only appear as projections in. Tellingly, during the games first year there has only been one event banner featuring a Virtual Singer, which was Miku on New Years, though even then Miku wasn't the focus of the event it was tied to.
  • Small, Secluded World: Being a Pocket Dimension, every SEKAI is implied to be this to some degree. For example, School Sekai has all the functions of a proper school, including a rooftop, and several classrooms. Though, it's implied that there's nothing else beyond the school and the characters are never shown venturing beyond it.
  • Strong Family Resemblance: Saki and Tsukasa have similar hair and eye colors, making them look almost like gender-flipped versions of each other. Subverted with the other two sibling pairs, Shiho/Shizuku and Akito/Ena, who look almost nothing alike.
  • Suddenly Shouting: Tsukasa's attempt to communicate with an American girl has him shouting in broken English. Even for his normal volume it's so aggressive that the already-upset child just cries even more.
    Tsukasa: HEY!! GIRL!! My name is TSUKASA TENMA! I am STAR! I am WORLD FUTURE STAR! DANCE! AND! SING!!
  • Super-Deformed: As implied by the title, this is the art style for Petit SEKAI. Amusingly, Nenerobo looks exactly the same in the anime due to already being chibi (well, for a certain measure of "chibi") by default.
  • Surprisingly Good English:
    • Vivid BAD SQUAD's cover of "ECHO" demonstrates the group's ability to sing in English, and they do quite the bang-up job.
    • In the POP IN MY HEART!! event, Wonderlands X Showtime goes on vacation to America and winds up finding an American child separated from her parents. Rui communicates with her in near-perfect English, which Nene needs to translate for Tsukasa. As for Tsukasa's attempt at "English"...
    Rui: (in English) Hi there. Are you lost? Do you know where your parents are?
    Tsukasa: ...What did he just say now?
  • Suspect Is Hatless: In the accompanying yonkoma for the "Intersecting Melodies, Glowing Warmth" event, Ichika paints a vivid description of Kanade for her friends, such as describing her sports jersey and luxuriously long white hair, which Honami secretly picks up on. The scene then cuts to Kanade, who is struggling to provide any accurate description of Ichika whatsoever to her friends besides her jet-black hair.
  • Take That!: NayutalieN engages in a bit of meta-humor in "MORE! JUMP! MORE!", whose bridge pokes fun at the insane amount of Emotion Fragments you need.
    "Now just a few more, a few more Emotion Fragments! Even if it's not enough, we'll keep moving forward!"
  • Tech Demo Game: The game effectively doubles as an advertisement for Crypton Future Media's "NT" series of voice bank software, their in-house counterpart to Yamaha's Vocaloid software. All of the Crypton characters use the NT software for speaking and have had their tuning redone in NT for SEKAI Ver. songs, including those that haven't had their software released yet.
  • There Are No Therapists: Many of the problems that the cast face are dealt with exclusively by the main cast despite the fact it's blatantly clear that some of the characters really need professional help. Especially if it involves 25-ji, Nightcord de. Considering that the main setting is Japan, this trope is probably justified, since Japan doesn't have a good view regarding mental care.
  • Title Scream: The title screen features the cast saying the name of the game.
  • Tragically Misguided Favor: In the Vivid BAD SQUAD story, Akito and An agree to hold a friendly competition at a live event, but the Musician for BAD DOGS, in an attempt to allow BAD DOGS to win, sabotages the event during Vivid's performance by cutting the sound. While An manages to rerail the event even without the music, Kohane is left extremely shaken from stage fright. However, Akito takes credit for the sabotage and claims that he was trying to prove that Kohane wasn't ready for the big stage (in a Cruel to Be Kind manner).
  • True Art Is Incomprehensible: In-universe, Shizuku is impressed by Honami's drawing of a person picking up litter, calling it "abstract". Honami is forced to hastily convince Shizuku against using her own drawing due to sheer embarrassment.
  • Useless Useful Spell: Birthday/Anniversary Cards have the dubious honor of having the best healing skills in the game... which means little, since the value of healing and PERFECT Lock skills diminishes drastically if the player simply improves at the game. Aside from that, they have an incredibly mediocre PERFECT score boost, which is worse than most dedicated healer cards.
  • Virtual Celebrity: While this a given for them in real life, Project Sekai' is unique in that it also applies to the Virtual Singers in-universe. The story quickly shows that they're more than just virtual, however.
    • As of Connect Live and Colorful Live, in-game and out-of-game (respectively) concerts in which the characters perform for and interact with a real audience, this applies to the Virtual Singers as well as the original generation.
    • The original characters have collaborated with and endorsed real brands alongside Hatsune Miku, such as Nissin Top Ramen and Pocari Sweat, all while still being their fictional selves.
  • Virtual Paper Doll: The player is given the option to dress up the characters in a slew of different unlockable MV outfits. More outfits are added as gacha rolls out.
  • Vocal Dissonance: The characters in MV's are interchangable even if you set the sound so that only the virtual singers are singing. Therefore, you can have the male characters singing in the female roles, the girls being mismatched with the voices, and etcetera.
  • Write What You Know: Invoked by Wonderlands x Showtime during the "Wonder Magical Showtime!" event, whose park-wide show is a recreation of Phoenix Wonderland's history and current state. In it, a young girl is entrusted by her dying mentor with the amusement park he created after a war, but believes that she doesn't have the ability to keep it running like he did. However, with the power of everyone working together, she eventually makes the park shine brighter than ever.
  • Yonkoma: An official one is released alongside the game updates. Panels from the comics can also be seen during the in-game loading screens.

Alternative Title(s): Hatsune Miku Colorful Stage

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