|Superdimension Neptune VS Sega Hard Girls|
|Developer(s)||Compile Heart, Felistella|
|Publisher(s)|| JP Idea Factory|
EN Idea Factory International
|Platform(s)|| PlayStation Vita|
|Release date(s)|| PlayStation Vita|
JP November 26, 2015
NA October 18, 2016
EU October 21, 2016
EN June 12, 2017
JP June 13, 2017
|Rating(s)|| JP CERO: C|
NA ESRB: Teen
EU PEGI/USK/ACB: 12/12/M
|Distribution|| Retail (PS Vita Card)|
|Official Japanese Website|
Official American Website
Official European Website
Superdimension Neptune VS Sega Hard Girls (超次元大戦 ネプテューヌVSセガハードガールズ 夢の合体スペシャル, Cho Jigen Taisen Neptune VS Sega Hard Girls: Yume no Gattai Special, lit. Super Dimension War Neptunia VS Sega Hard Girls: Dream Combination Special) is a crossover game between the Hyperdimension Neptunia and Sega Hard Girls franchises developed by Felistella for the Playstation Vita. IF and new character Hatsumi Sega are the co-protagonists of this game.
Sega Hard Girls is a similar franchise that also turns Sega consoles into moe characters. It is a Japanese multimedia project which was adapted as a light novel and into the anime Hi☆sCoool! SeHa Girls.
"A grand library that administers all of the world’s history.
They say that the history books in this library have the power to actually rewrite the history of the world.
After a long journey, IF steps foot into the grand library with a certain objective in mind.
However, at the same time, something happens in the library that has been making the history books disappear left and right.
The books’ disappearance means the actual loss of history. As history disappears before her own eyes… so does the world.
In order to correct these wrongs, IF begins her adventure on a journey that goes beyond space-time."
The player is able to explore dungeons including being able to crawl through spaces.
The adventure takes place across four different eras: the classical-themed Mega Drive Era, the medieval-themed Sega Saturn Era, the industrial-themed Game Gear Era, and finally the modern Dreamcast Era. The Grand Library serves as the game's hub and serves many functions such as travel between eras, shops, quests, and class changing.
- Voiced by: Kana Ueda (Japanese), Kate Higgins (English)
- One of the co-protagonists. In a world that is seeing an era of extinction, she’s an adventurer who journeys around the world with her bike to find something fun and for a brighter tomorrow. She’s a serious, cool, and steady character, one who keeps the group together, but she can be a bit of a “chūnibyō” (one with some delusional thoughts of having special powers that no other person has, or act like know-it-all adults and look down on others.)
- Neptune (Nepbike)
- Voiced by: Rie Tanaka (Japanese), Melissa Fahn (English)
- The Main Character of the Hyperdimension Neptunia Series. When history was erasing, Neptune saved IF and Segami at the cost of her own life, but she ended up possessing IF's bike.
- Voiced by: Rie Tanaka (Japanese), Melissa Fahn (English)
- The other Neptune from a parallel timeline. When IF and Segami went back to her era again, Neptune is saved by them instead and joins their party afterwards along with Sega Saturn.
- Voiced by: Yui Horie (Japanese), Christine Marie Cabanos (English)
- Neptune's younger sister.
Sega Hard Girls
- Hatsumi Sega
- Voiced by: Emi Nitta (Japanese), Cassandra Lee Morris (English)
- One of the co-protagonists. An unknown young girl with amnesia. She goes by “Segami” or “Segamin.” She doesn’t remember anything other than her name, but she seems to show an unordinary tenacity for changing the history of the war between the Goddesses and the Sega Hardware Girls. She has a leader-like charismatic personality, and she doesn’t listen to others at times, but she occasionally comes up with ideas from out of nowhere that even baffle her own friends.
- This is the first game in the franchise not to have a CPU or CPU Candidate as the lead role.
- Many, if not all, of the Sega Hard Girls, who aren't part of the main cast make an appearance as Chirper Characters with many of them having interactions with IF herself as well as running some of the menu options in the library.
- The plot seems to slightly resemble that of Dragon Ball Xenoverse, as a character has to go through history and stop it from being changed.
- All characters in this games are based on Sega consoles, with each having their counterpart, i.e., Game Gear and Nepgear, with the exception IF and Histoire. Segami herself represents Sega as a whole.
- Similar like DLC Characters and certain unlockable characters, all playable characters, aside from IF and Segami, are playable even if they have not joined the party in the story yet.
- This is explained in-game as clones built by Histoire using the data IF and Segami got by meeting with the CPU or Sega Hard Girl. Although, it is explained as their only function is for combat and will not be able to converse normally aside from battle quotes. The clones disappear once the real ones join the party and their stats and levels will carry over.
- The characters do not share the same backstories with each other. In this game, IF meets every CPU and Histoire for the first time, and the CPUs from Planeptune live in different eras instead in different dimensions. The SeHa Girls also live in different eras instead in the same era as in the Hi☆sCoool! SeHa Girls anime.
- The prologue video of this game shows a duel between Purple Heart and Dreamcast, despite they are not their respective counterparts. This is likely because both of them are the protagonists of their respective franchise.
- This game won the Hardcore Gamer "Best of E3 2016" award on the PS Vita category.
- The localized terms CPU and HDD are never mentioned outside the tutorials and character profiles.
- The European version of the game has Dreamcast wearing a blue outfit instead of her regular orange one, since Dreamcast has a blue logo in the PAL territories.
- The existence of a PC version was accidentally leaked when ESRB rated the game and listed "Windows PC" in the list of platforms for the game.