From Bulbapedia, the community-driven Pokémon encyclopedia.
Spike Chunsoft (Japanese: スパイク・チュンソフト Spike Chunsoft), formerly Chunsoft (Japanese: チュンソフト Chunsoft), was a Japanese video game developer specializing in console RPGs. It was founded by Koichi Nakamura, a video game designer from Enix. They are the developers of the Pokémon Mystery Dungeon series.
On April 1, 2012, Chunsoft was merged with Spike, and the company name is now Spike Chunsoft. It is currently owned by Dwango.
Notable non-Pokémon games
In addition to the Mystery Dungeon series, they have also developed for other series such as Dragon Quest and Sound Novels. They also made the highly critically acclaimed Nintendo DS game Nine Hours, Nine Persons, Nine Doors, its Nintendo 3DS and PlayStation Vita sequel, Zero Escape: Virtue's Last Reward, and the Danganronpa series. Its name is taken from Chun, a character that appeared in Enix's very first video game, Door Door.