Takashi Iizuka is a japanese game designer who works for Sega. He worked on NiGHTS into Dreams, created the original idea for Sonic Adventure (it was his idea for a Sonic Role-Playing Game), and was the lead designer for Sonic Adventure 2 and Sonic Heroes. Most recently he worked on Shadow the Hedgehog. He currently heads SEGA's Sega Studio USA R&D development team and is leading development of NiGHTS: Journey of Dreams. Sega Corporation ) is an international video game software and hardware developing company, and a former home computer and console manufacturer. ... NiGHTS into Dreams. ... Sonic Adventure ) is a video game created by Sonic Team and released on December 23, 1998 in Japan by Sega for the Sega Dreamcast. ... A role-playing game (RPG, often roleplaying game) is a type of game in which the participants assume the roles of fictional characters and collaboratively create or follow stories. ... Sonic Adventure 2 ) is a video game in the Sonic the Hedgehog series, developed by Sonic Team for the Sega Dreamcast, and later ported as an update to the Nintendo Gamecube. ... Sonic Heroes ) is a video game in the Sonic the Hedgehog series. ... This article or section does not adequately cite its references or sources. ...