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[[caption-width-right:350:If you want [[DarkerAndEdgier Dark Stories]], you got it.]]

Nitroplus Co., Ltd. (nitro+/Nitro Plus before the 2008 rebranding) is a Japanese game company specializing in {{Eroge}} and {{Visual Novel}}s. Its works are almost invariably [[DarkerAndEdgier dark in tone]], with an abundance of {{Eldritch Abomination}}s, horror, rape, [[{{Gorn}} gore]] and violence.

Their first release was 2000's ''VisualNovel/PhantomOfInferno'', also was main writer Gen Urobuchi's first work with the company. Subsequent games such as 2003's ''VisualNovel/SayaNoUta'' and 2008's ''VisualNovel/ChaosHead'' garnered enough acclaim for the studio's popularity to reach levels comparable to that of Creator/KeyVisualArts, [[Franchise/{{Nasuverse}} TYPE-MOON]] and [[Franchise/WhenTheyCry 07th Expansion]].

One of Nitro's most prolific creators is Creator/GenUrobuchi, who has gone on to write ''LightNovel/FateZero'', ''Anime/PuellaMagiMadokaMagica'', and ''Anime/PsychoPass'' independent of the company. Vocalist Music/KanakoItou is another frequent collaborator, having performed the musical themes for many of their [=VNs=] and anime adaptations. On a sad (and perhaps ironic) note, their music producer Shingo Minamino was murdered tragically and brutally in the middle of a busy street.

For some bizarre reason, the company responsible for so many dark and disturbing stories has a mascot in the pink-haired, baby-faced, be-headphoned {{Moe}} character [[Anime/SuperSonico Super Sonico]].

[[AcronymConfusion No relation to]] VideoGame/NPlus

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!! Releases of Nitro+ (in chronological order):
[[index]]
* ''VisualNovel/PhantomOfInferno'' (2000)
** ''Phantom INTEGRATION'' (2004)
** ''Phantom -Phantom of Inferno-'' (2012) - All-ages remake of the original game for the Xbox360, with updated art and voice actors from the anime adaptation. A PC port was released in 2013.
* ''Vampirdzhija Vjedogonia'' (2001)
* ''VisualNovel/KikokugaiTheCyberSlayer'' (2002)
** ''Kikokugai -Reichin Rinrinshan-'' (2011) - Main/{{Remake}} of the original game with voice acting and toned-down sexual content ([[Main/BleachedUnderpants Rated 15+]])
* ''"Hello, World."'' (2002)
* ''VisualNovel/{{Demonbane}}'' (2003)
* ''VisualNovel/SayaNoUta'' (2003) - one of Urobuchi's most famous-- or infamous-- works
* ''Angelos Armas'' (2005)
* ''Jingai Makyou'' (2005)
* ''VisualNovel/{{Hanachirasu}}'' (2005)
* ''Sabbat Nabe - Nitro+ Amusement Disc'' (2006), a compilation disc which includes ''VisualNovel/DraKoi'', ''[[Main/ShootEmUp Nitrowars]]'', and ''Kaigen Seito'' (a RolePlayingGame spin-off of ''Hanachirasu'')
* ''Gekkou no Carnevale - Carnevale de la Luce de la Luna'' (2007)
* ''Zoku Satsuriku no [[SpaghettiWestern Django]]'' (2007) - also known as ''Tre Donne Crudeli''
* ''Nitro+Royale - [[MascotFighter Heroines Duel]]'' (Comiket 2007) - a fighting game
* ''VisualNovel/ChaosHead'' (2008) - First entry of the ''VisualNovel/ScienceAdventureSeries'', their collaboration with 5pb.
* ''Sumaga -STAR MINE GIRL-'' (2008)
** ''Sumaga Special'' (2010) - a ''Sumaga'' fandisc
* ''VisualNovel/FullMetalDaemonMuramasa'' (2009)
** ''Full Metal Daemon Muramasa Stories of Evil Thoughts'' (2010) - a fandisc
* ''VisualNovel/SteinsGate'' (2010) - Second entry of the ''Science Adventure Series'', their collaboration with 5pb.
** ''Steins;Gate [[GaidenGame Linear Bounded Phenogram]]'' (2013)
** ''VisualNovel/SteinsGateZero'' (2015)
* ''Axanael'' (2010)
* ''[[RhythmGame Soni]][[RomanceGame Comi]] - Communication with Sonico'' (2011)
** ''Motto! [=SoniComi=] - More Communication with Sonico'' (2013) - [=PS3=] port of [=SoniComi=], featuring reworked graphics and more content.
* ''Anime/GuiltyCrown Lost Christmas'' (2012) - prequel to Guilty Crown
* ''Phenomeno - Chapter 1'' (2012) - adaptation of the novel of the same name
* ''VisualNovel/RoboticsNotes'' (2013) - Third entry of the ''Science Adventure Series'', their collaboration with 5pb.
* ''Kimi to Kanojo to Kanojo no Koi.'' or ''Totono'' (2013) - A [[spoiler:[[{{Deconstruction}} deconstructed]]]] Romance [[spoiler:{{Metafiction}}]] Game.
* ''VisualNovel/ChaosChild'' (2014) - Fourth entry of the ''Science Adventure Series'', their collaboration with 5pb.
* ''Tokyo Necro'' (2016) ([[http://tokyonecro-nitroplus.tumblr.com official tumblr account]])
** ''Tokyo Necro DEFENDERS'' (TBA) - tie-in mobile game
[[/index]]
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!!Nitroplus also has a branch focused on producing BoysLove {{Visual Novel}}s: '''Nitro+ [=CHiRAL=]'''. Its works are listed below:
[[index]]
* ''VisualNovel/TogainuNoChi'' (2005)
* ''VisualNovel/LamentoBeyondTheVoid'' (2006)
* ''Chiral Mori - Chiral Amusement Disc'' (2008)
* ''VisualNovel/{{sweet pool}}'' (2008)
* ''False Alkanet'' (2010) - a Mobile Visual Novel
* ''VisualNovel/DramaticalMurder'' (2012)
** ''[=DRAMAtical=] Murder re:connect'' (2013) - a ''[=DRAMAtical=] Murder'' fandisc
* ''Slow Damage'' (TBA)
[[/index]]
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!!In addition, people from the company have worked on, or are credited in, other works:
[[index]]
* ''Manga/AttackOnTitan'' (their internal staff worked on the Blu-Ray visual novels. Additionally Nitro+ writer Gun Snark wrote the ''No Regrets'' spin-off manga)
* ''Anime/AldnoahZero'' (TV series reuniting Urobuchi with ''Fate/zero'' director Ei Aoki, and co-produced between Nitro+, Creator/A1Pictures and TROYCA[[note]]A new anime studio recently founded by Aoki[[/note]])
* ''Manga/BlackLagoon: Shaitane Badi'' ({{Light Novel}}, with Urobuchi as author)
* ''Anime/{{Blassreiter}}'' (TV series, with Urobuchi as scriptwriter for several episodes)
* ''LightNovel/FateZero'' (Prequel of ''[[VisualNovel/FateStayNight Fate/stay night]]''; a series of four {{Light Novel}}s produced in collaboration with [[Franchise/{{Nasuverse}} Type Moon]], with Gen Urobuchi as author)
* ''LightNovel/CoffinPrincessChaika'' ([=NamanikuATK=] designed the characters and did the novel's illustrations)
* ''Anime/FuuunIshinDaiShogun'' (Makoto Ishiwata designed some of the mecha)
* ''Anime/GargantiaOnTheVerdurousPlanet'' (another AnimeFirst by Production I.G. this time, with thus-far the first episode script and series composition done by Urobuchi, and the second episode script by fellow Nitro+ writer Gun Snark; a second season is in the works)
* ''Anime/GuiltyCrown'' (has a PC game {{Spinoff}} written by [[VisualNovel/{{Demonbane}} Jin Haganeya]], who is also part of the show's writing team)
* ''Series/KamenRiderGaim'' ({{Toku}} series produced by Creator/ToeiCompany since October 2013, with Urobuchi as head writer and Nitro+ designing the monsters)
** ''Film/KamenRiderGaimGreatSoccerBattleGoldenFruitsCup'' ({{Toku}} movie released by Creator/ToeiCompany in July 2014, with Haganeya writing the movie's scenario and its [[BizarroEpisode tie-in episode]] though in collaboration with Toei's Nobuhiro Mouri)
** ''Film/KamenRiderXKamenRiderDriveAndGaimMovieWarFullThrottle'' ({{Toku}} crossover movie released by Creator/ToeiCompany in December 2014, with Haganeya writing the movie's first, ''Gaim''-centric act, in collaboration with ''Series/KamenRiderDrive'' head writer Toei's Riku Sanjou writing the other two acts, and Niθ designing the film's overall BigBad)
* ''VisualNovel/MuvLuvExtra'' and ''Muv-Luv Alternative'' (Niθ, for some of the mecha designs)
* ''Anime/NeppuKairikuBushiRoad'' (TV special between Nitro+, [[Anime/CardfightVanguard Bushiroad]], Bandai Visual and [[Anime/DotHackQuantum Kinema Citrus]] aired on December 31st, 2013)
* ''VideoGame/NitroplusBlasterzHeroinesInfiniteDuel'' (A fighting game made in collaboration with Examu featuring the various heroines from their work as well as [[VisualNovel/FateStayNight Saber]] as a GuestFighter. Released in Japanese arcades in 30 April 2015. A console port on the UsefulNotes/{{PS3}} and UsefulNotes/{{PS4}} with cross-gen multiplayer support in Japan by [=MarvelousAQL=] and North America by Creator/XSEEDGames will be released in winter 2015, exclusively featuring Homura from Marvelous/XSEED's ''VideoGame/SenranKagura'' and Heart Aino from Examu's ''VideoGame/ArcanaHeart'' as more true-to-the-definition {{Guest Fighter}}s relative to Saber[[note]]in that Nitroplus has never worked on either franchise; their inclusions were on the whims of the game's publisher and developer respectively.[[/note]])
* ''[[VisualNovel/PhantomOfInferno Phantom ~Requiem for the Phantom~]]'' (based on the story from the visual novel ''VisualNovel/PhantomOfInferno.'' Also had a few episodes penned by Gen Urobuchi)
* ''Anime/PsychoPass'' (TV Series by Creator/ProductionIG airing in Fall 2012, with Urobuchi as lead scriptwriter; a movie and second season have been released)
* ''Anime/PuellaMagiMadokaMagica'' (AnimeFirst series by Creator/StudioShaft airing in Winter 2011, with Urobuchi as scriptwriter, a LightNovel adaptation, a UsefulNotes/PlayStationPortable game released in 2012, and three theatrical films)
* ''[[Anime/QueensBlade Queen's Gate novels]]'' (a trilogy of side-stories from the ''Anime/QueensBlade'' universe that take place in our modern world, rather than the QB's fantasy medieval one. Niθ designed the characters from those novels)
* ''[[Anime/ExpelledFromParadise Rakuen Tsuihou -Expelled From Paradise-]]'' (Anime film co-produced by Nitro+ and Creator/ToeiAnimation with a screenplay by Urobuchi)
* ''Manga/SchoolLive'' (the manga is written by one of Nitroplus's staff members, Kaihou Norimitsu. In addition the script of the anime is written by them)
* ''[=SoniPro=] -Super Sonico in Production-'' (Collaboration with Creator/{{Imageepoch}}, an Idol simulation game featuring Super Sonico)
* ''VideoGame/ToukenRanbu'' (a free-to-play browser game about personifications of famous Japanese swords as [[CastFullOfPrettyBoys good-looking young men]], made in collaboration with Kadokawa Games)
* ''Series/ThunderboltFantasy'' (a puppet show collaboration with Pili International Multimedia and Good Smile Company, written by Gen Urobutchi. Niθ is credited with character designs)
[[/index]]
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!!Tropes pertaining to them, and their works in general:

* AnimalMotifs: Cats and Dogs, in the Chiral titles.
* AllLowercaseLetters : The company name is stylized as 'nitro+'. Averted in their early days, where the logo had uppercase 'N' and is referred as 'Nitro Plus' (two words), instead of 'Nitroplus' (one word).
** ''[[VisualNovel/SweetPool sweet pool]]''
** Averted for ''Nitro+[=CHiRAL=]''
* AprilFoolsDay : They usually celebrate this every year. Highlights includes them quitting the whole industry altogether to become farmers in 2008.
* AwesomeMcCoolName : Some of their staff uses these kind of names as their pseudonym. Highlights includes Digitarou (their CEO), [=NamanikuATK=] ([[Main/NoPronunciationGuide spelled 'At-ta-kai' by the way]], not '[[Main/IThoughtItMeant Attack]]'), and the above-mentioned Gun Snark. One of their staff also has 'UNKNOWN GAMES' written as part of his pseudonym.
* ConspicuousCG : Most of the Background/Object images in their games are CG, made by CG Studio Polygon Bangcho/Nitroplus Arts. The [[AllThereInTheManual artbooks]] usually shows the wireframes/rough models of said backgrounds.
* {{Cyberpunk}} : To date, they have made many works in this genre. Highlights includes "Hello, World", ''VisualNovel/KikokugaiTheCyberSlayer'', ''VisualNovel/ChaosHead'', ''VisualNovel/SteinsGate'', ''Anime/PsychoPass'', and ''VisualNovel/DramaticalMurder''. Their newest title ''Tokyo Necro'' continues this tradition, which is basically ''Film/BladeRunner'' '''[[RecycledInSpace WITH]] [[Main/ZombieApocalypse ZOMBIES]]'''!
* '''{{Deconstruction}}''': The bread and butter of their body of work
* GoroawaseNumber: ''2106'', which is spelled 'Nitro', appeared in ''[=SoniAni=]'' and ''VisualNovel/DramaticalMurder'' (as 2106 CR-L, with CR-L as 'Chiral').
* MagicalGirl : ''Sumaga'' and ''Anime/PuellaMagiMadokaMagica'' has main heroines that are these.
* MascotFighter : ''Nitro+Royale'' and ''Nitroplus Blasterz'' are these
** One of their April Fools jokes is a {{Crossover}} fighting game with [[Franchise/{{Nasuverse}} TYPE-MOON]], aptly-named ''[[ExactlyWhatItSaysOnTheTin TYPE-MOON vs. Nitroplus]]''
* MeaningfulName : The current engine used for their games is called [=N2System=]. N2 is the chemical symbol of Nitrogen.
** Super Sonico is written as 'すーぱーそに子', which could meant 'Super Sound Girl' or 'Supersonic' (as in supersonic sound). [[Main/SpearCounterpart Naitou-kun]], on the other hand, is derived from 'Night', although could be a derivation of 'Nitro' ('Nai' is spelled as 'Ni' in english pronunciation). The main draw from their names can be found in the fact that they were both mascots for their respective branch's concerts, Nitro+ '''Supersonic''' (Sonico) and The [=CHiRAL=] '''NIGHT''' (Naitou).
* LighterAndSofter : ''Sumaga'', ''VisualNovel/DramaticalMurder'', and ''Totono'' has visual designs and atmosphere that are this trope, but [[CerebusSyndrome still]].....
** ''[[Main/RhythmGame Soni]][[Main/RomanceGame Comi]]'' is a straight example of this trope.
* SeriesMascot: Two: Super Sonico for the main branch, and Naitou-kun for [=CHiRAL=].
* SomethingCompletelyDifferent : ''[=SoniComi=]'' which is 100% LighterAndSofter than their other titles. Its also their first completely-3D title, before ''VisualNovel/RoboticsNotes''
* VanityPlate : They used one in ''VisualNovel/SayaNoUta'' (CG Sequence of a weapon-like thing opening to reveal their logo) and ''VisualNovel/LamentoBeyondTheVoid'' (a shot of characters' tail followed by N+C logo)
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