Hyperdimension Neptunia

Games within the series takes place in the world of Gamindustri (ゲイムギョウ界, Geimugyō-kai, a pun on ゲーム業界 Gēmu gyōkai, "game industry"), which is divided into four regions/nations which are each ruled by one CPU: Planeptune, Lastation, Lowee, and Leanbox. Each region is completely different from the others in appearance and atmosphere, with each representing a specific video game console. Lastation represents the PlayStation, Lowee represents the Wii, and Leanbox represents the Xbox, while Planeptune represents the cancelled Sega Neptune. In the beginning of the story, the four goddesses are fighting each other for "shares" in a war known as the Console War. Shares are the manifestation of the belief citizens put into their goddess, and without shares, a goddess dies. Because some of the games feature time and/or dimension travel there are slight differences in the settings for each title.

Prior to Q3 2009, Compile Heart was conceptualising a new RPG project centred upon character designs by Tsunako, with the intention of collaborating with a partner company. This game was originally planned to feature three princess sisters and a protagonist. However, the partnership deal fell out, and as a result the project plans were redesigned and eventually became "Neptunia" close to the end of 2009 following the completion of Trinity Universe's development. During the early stages of the project, the characters Noire and Blanc were originally coloured red and blue respectively, however their colour schemes were changed to black and white so that they could better fit in with the new game setting and plot.^[2]

The release of the first sequel to the original game, Hyperdimension Neptunia mk2, saw the introduction of a reworked game engine and the replacement of various components such as the battle system and dungeons, which were completely rebuilt from scratch. Hyperdimension Neptunia Victory later built on this, with the parts from mk2 which were considered "weak" by the developers removed and improved, eventually setting Victory as the foundation for the design of future titles within the series. Following Compile Heart's collaboration with David Production to produce the Neptunia television animation series, the developers were able to change their approach to direction and script-writing based on their experience with the anime development staff, which resulted in the changes to the narrative found in the Re;Birth games on PlayStation Vita.^[2]

Hyperdimension Neptunia is the first game within the series, with the name originally derived from the scrapped Sega Neptune^[3] which combined the Sega Mega Drive/Genesis and Sega 32X into one unit, originally scheduled for release in 1994 or 1995 before the project was dropped after the release of the Sega Saturn.

There are two sequels which have been released under the names Hyperdimension Neptunia Mk2 and Hyperdimension Neptunia Victory. Another game, titled Hyperdimension Neptunia PP (神次元アイドル ネプテューヌPP, Kamijigen Aidoru Neputyūnu PP),^[4] was released on June 20, 2013, for the PlayStation Vita in Japan and it was released in the west in June 2014 as Hyperdimension Neptunia: Producing Perfection, developed by Compile Heart, Idea Factory and Tamsoft.

During a streamed interview at Tokyo Game Show 2013, Idea Factory and Compile Heart announced that Hyperdimension Neptunia Re;Birth 2: Sisters Generation was under development.^[5][6] Re;Birth 2 was released on March 20, 2014.^[7] Hyperdevotion Noire: Goddess Black Heart (超女神信仰ノワール　激神ブラックハート, Chō Megami Shinkō Nowāru Geki-Shin Burakkuhāto) with Noire as the main character, was released on May 29, 2014.^[8]

On March 16, 2014, two new next-generation games were announced, titled Hyperdimension Neptunia U: Action Unleashed (超次元アクション ネプテューヌU) and Megadimension Neptunia VII (新次元ゲイム ネプテューヌVII).^[9] Hyperdimension Neptunia U: Action Unleashed is an action game spin-off exclusively for the PlayStation Vita released on August 28, 2014, in Japan, developed by Tamsoft,^[10] whilst Megadimension Neptunia VII is a main series title for the PlayStation 4.^[11]

At Tokyo Game Show 2014, an enhanced remake of Hyperdimension Neptunia Victory for the PlayStation Vita, titled Hyperdimension Neptunia Re;Birth 3: V Century, was announced.^[12][13]

Remade as Hyperdimension Neptunia Re;Birth 1 released in 2013, Hyperdimension Neptunia Re;Birth 1 Plus in 2018, and Neptunia re★Verse in 2020.

The second game in the series. It introduced gameplay mechanics, new characters, and interpretations of the previous ones, which became a mainstay in the series. The game's plot tackles more about the major consequences of video game piracy, albeit presented in a black-and-white manner. It was later remade as Hyperdimension Neptunia Re; Birth 2: Sisters Generation which was initially released in 2014 for PlayStation Vita and Steam.

The third game in the series, which mainly takes in an alternate dimension and is based around gaming culture around the early generations until the sixth-generation era of gaming. It received an enhanced version for the PlayStation Vita and Steam as Hyperdimension Neptunia Re;Birth 3: V Generation which was initially released in 2014.

The first game in the series for PlayStation 4 released worldwide in 2016. The game's plot is slightly inspired by the shift from the seventh generation of consoles to the 8th generation, as well as the history of the Sega Dreamcast. The game received a remake, framed as a retelling of the True Ending route, in 2017 as Megadimension Neptunia VIIR which featured new cutscenes with VR support. Released on the same platforms as the original (except for the Nintendo Switch).

An idol-raising simulator game with rhythm and dating sim elements. It is the first game in the series to be on the PlayStation Vita and was the only game in the series to not receive a port to PCs.

An online mobile card game for Android and iOS developed by Idea Factory and hosted by GREE starting from February 15, 2013. It is a collectible card game which involves social networking elements.^[14] The game's servers shut down on July 31, 2014.

Turn-based tactical role-playing game which utilizes a battle grid.

Dynasty Warriors-type real-time action game.

Multiplayer action game.^[15]

Crossover RPG with the Sega Hard Girls franchise.^[16]

Action RPG based on a fictional MMORPG within the series universe.^[17]

Interaction/Card game released in Japan for Android and iOS. The localized version was released exclusively for iOS and featured less characters and updates compared to the Japanese version.

Free-to-play card battle game,^[18] and the first Neptunia game to not be released outside Japan. The game's support was terminated on August 8, 2018.^[19] Though it wasn't released outside Japan, the English version of Neptunia Virtual Stars gives this game the name "Nep-Nep★Connect: Chaos Champloo" when referring to characters that debuted in this game in game's collectible card list.

2D side-scrolling action game. First title in the series to be developed outside Japan,^[20] and the first Neptunia title that was released on a Nintendo platform.

2D anime bullet hell game. First game to be exclusive to PC. Also the first game to be released on the same day worldwide. First game to be developed by Idea Factory International. First game to be published by Idea Factory in Japan instead of Compile Heart. It was ported to PlayStation 5 alongside Neptunia re★Verse.

A hack 'n' slash game with rhythm elements that tackles and parodies culture around social media, featuring various Vtubers. The first game in the series not to receive an English dub due to the amount of guest Vtubers present.

Crossover with the Senran Kagura series. The second game in the series not to receive an English dub.

Rail shooter game exclusive to PC developed by Frontier Works.^[21]

Action RPG starring the candidates. For the first time, the character models have been remade from scratch. It was released in Japan on April 21, 2022, for PlayStation 4 and PlayStation 5.^[22] A Western version has been released in January 2023, adding PC via Steam to platforms.^[23] It also released for Xbox One and Xbox Series X/S on May 21, 2024.^[24] This is the first game to have an English dub since the release of Super Neptunia RPG, and the first to release on Xbox platforms.

RPG spin-off starring the alternate universe adult Neptune for PS5, PS4, and Switch.^[25] First released in 2023 in Japan, it launched worldwide in May 14, 2024. Xbox Series X/S version also planned to release in 2024.^[26]

A motorcycle action game, known in Japanese as Neptunia VS Titan Dogoo. It was released in Japan for PS5, PS4, and Switch on June 27, 2024, and will be released worldwide on January 28, 2025.^[27]

A manga series based on the game titled Choujigen Game Neptune: Megami Tsuushin (超次元ゲイム ネプテューヌ ~めがみつうしん~) began serialisation in November 2010 within the Famitsu Comic Clear.

A manga series illustrated by Mikage Baku which complements the television animation, titled Hyperdimension Neptunia: The Animation – Hello New World (超次元ゲイム ネプテューヌ THE ANIMATION はろーにゅーわーるど), began serialisation within the June 2013 issue of Dengeki Maoh. A spin-off novel of the anime, titled Hyperdimension Neptunia TGS Hono no Futsukakan, was published by MF Bunko J and released May 25, 2013.^[29][30]

An anime adaptation, Hyperdimension Neptunia: The Animation, was produced by David Production of Japan and directed by Masahiro Mukai.^[31] Series composition and script writing are done by Shōgo Yasukawa and a musical score composed by Hiroaki Tsutsumi, Kenji Kaneko and Masaru Yokoyama. Character designs are done by Hitomi Takechi, based on the original designs by Tsunako along with art direction by Masanobu Nomura and sound direction by Jin Aketagawa. The twelve-episode series aired on Tokyo MX on July 12, 2013, and were later aired on BS11, KBS, Sun TV and tvk then finished on September 27, 2013. The series was acquired by Funimation for online streaming in North America with both the English dub and the original Japanese dub with English subtitles.^[32] The opening theme is "Dimension tripper!!!!" by nao and the ending theme is "Neptune☆Sagashite" (ネプテューヌ☆サガして) by Afilia Saga.^[33] "Go→Love&Peace" by Ayane is used as the ending theme of episodes 3 and 4, in addition to "Ito" (糸, literally "yarn") by Afilia Saga on episode 10. It was broadcast within the United States on Funimation Channel.

A new original video animation (OVA) titled Nepu no Natsuyasumi was announced to be in production. Returning staff members include Masahiro Mukai as director, Hitomi Takechi as character designer, and Shōgo Yasukawa as scriptwriter, with animation by studio Okuruto Noboru.^[34] It premiered on July 8, 2019.^[35] A second OVA titled Nep Nep Darake no Festival was bundled with "Dimensional Traveler Neptune Generator Unit ver." 1/7 scale figure, which was released on December 15, 2021. A third OVA titled Hidamari no Little Purple was bundled with the "Neptune Little Purple ver." 1/7-scale figure, which was released on July 3, 2022.^[36][37]

The anime television series adaptation received a mixed response, with praise for its original story and humor revolving around video game industry in-jokes, and criticism for its use of melodrama.^[38]

Most of the original soundtracks created for the Neptunia series were composed by Kenji Kaneko, with additional composers for Megadimension Neptunia VII and later games.^[39] The first, titled Hyperdimension Neptunia Sound Track CD, was released on August 19, 2010, and was bundled with a Japanese Limited Edition of the game.^[40] The soundtrack for the second game contained 13 tracks and was released in Japan with the limited edition on August 18, 2011.^[41] It was later repackaged with the western limited release on February 28, 2012, which featured 18 tracks and was titled Hyperdimension Neptunia mk2: Sounds of Gamindustri.^[42] The soundtrack for Hyperdimension Neptunia Victory was released on August 30, 2012, with the Japanese Limited Edition and contained 16 tracks.^[43] Similar to the second game, the soundtrack was released overseas with the Limited Edition of the game with 24 tracks, titled Hyperdimension Neptunia Victory Sounds of that other Gamindustri.^[44] The Megadimension VII soundtrack, MEGADIMENSION NEPTUNIA VII Dream Edition DG-ROM, was included with the Japanese Dream Edition and released in a 50 track, 3 disc format on April 23, 2015.^[45] Its overseas release, MEGADIMENSION NEPTUNIA Official Soundtrack was included exclusively with the Limited Edition online, containing only 45 tracks over 2 discs.^[46] The soundtrack for 4 Goddesses Online was released on February 9, 2017 with the Royal Edition of the game.^[47]

For each title in the Re;Birth series, the soundtracks were re-released following each game's initial release, usually with a few additional or missing tracks. Re;Birth 2's soundtrack, titled Hyperdimension Neptunia Re;Birth2: SISTERS GENERATION ~ "Sisters' Melodies" Soundtrack CD was released exclusively on Idea Factory International's website with the Limited Edition of the game and contained 19 tracks from the game.^[48] Compile Heart and Idea Factory International later made the Re;Birth series available for the PC on the Steam platform, in which DLC included digital releases of the soundtrack for each game.

In addition to the game soundtracks, there have been CD single releases for the opening and ending themes for each game. The voice actresses for each character have also released individual singles, in which they perform original in-character songs. Various Drama CD series have also been released in which voice actors perform original episodes.^[49] The anime series also released singles for the opening and ending themes, alongside a drama CD and 7 special "Animation Processor" discs, which contained a variety of different audio media including songs, voice actor commentary, and drama episodes.

A compilation of the main vocal tracks from each game (including character songs) was released as a 5 disc series on August 27, 2014.^[50]

Alarm clock applications and mobile skins/themes featuring Neptunia characters have also been released for Android and iOS.

• Hyperdimension Neptunia (anime) at Anime News Network's encyclopedia