20 Nov 2008
20 Nov 2008 - Xbox 360
28 Nov 2008 - Xbox 360
27 Nov 2008 - Xbox 360
09 Dec 2008 - PlayStation 3
19 Feb 2009 - PlayStation 3
19 Feb 2009 - Xbox 360
18 Dec 2008 - PlayStation 3
19 Dec 2008 - PlayStation 3
Main story
Main story + extras
100% completion
Gameplay in Sonic Unleashed focuses on two modes of platforming play: fast-paced levels that take place during daytime, showcasing Sonic's trademark speed as seen in previous games in the series, and slower, night-time levels, during which Sonic's Werehog form emerges, and gameplay switches to an action-based, brawler style of play, in which Sonic battles Gaia enemies
P.s.: Based on the fact that this game has so many versions in which only one of them is actually good (this one), I don't understand why Sega would make so many versions of this game instead of optimize a single version of the game.