When last we last saw Sonic Unleashed, we learned that the game was split into day and night levels. We didn't know at the time just how important a role the time of day plays into Sonic Unleashed.

Sonic: Night Of The Werehog Sonic goes to Hollywood - well not quite. SEGA's little blue ball to star in a short movie tied to Sonic Unleashed coming next month, trailer inside.

Sonic Returns to 2D with Sonic Unleashed; Announcement Hints That Sonic Is a Werewolf . ... it appears that Sonic will transform into a werewolf-like beast when night falls within the game.