Sonic Adventure: Chaos Complex developer publisher released genre modes ratings platforms media Sonic Adventure: Chaos Complex is a tie-in game released in 2003 for Windows, the Nintendo Gamecube, PlayStation 2, Game Boy Advance and XBOX. An N-Gage port was also made, but was only released in Europe. The game was developed by Cor-Son Games and published by SEGA and Activision. While it wasn't a critical success, it has gained a following in recent years from Sonic fans.