Detective Conan 's expansion into the video games industry followed behind its foray into animation. On December 27, 1996, Detective Conan: Chika Yuuenchi Satsujin Jiken was released for the Game Boy.Since then, 20 games have been released with Detective Conan: Kako Kara no Zensōkyoku Prelude set for Spring of 2012 for the Nintendo DS and PlayStation Portable. Currently, the majority of the games have only been released in Japan, though Nobilis has localized Case Closed: The Mirapolis Investigation for the PAL region. All dedicated Detective Conan games released for the Game Boy, Sony's consoles, the WonderSwan, and the Nintendo DS have been developed by Bandai. Banpresto developed the Case Closed titles on the Game Boy Color and Game Boy Advance while Marvelous Entertainment developed Case Closed: The Mirapolis Investigation