The Xbox 360 version of Sonic unleashed has explorable 3D hub worlds like Sonic Adventure .
Hubworlds operate differently depending on the version of the game being played ; the Xbox 360 and PlayStation 3 versions feature fully interactive , explorable 3D hubworlds , similar to those in Sonic 2006 , in which townspeople may be interacted with and side quests may be undertaken , in order to gain experience or unlock items , such as artwork , videos and music tracks .
Sonic Unleashed