The above trailer is a new one for Sonic Generations, featuring what they call the Dreamcast Era games (Sonic Adventure, Adventure 2 and Heroes – despite it not being released on the Dreamcast). Whilst featuring the three levels they are taking from this game, if you watch to the end – they specifically showed Shadow grinding down a rail – hinting I suppose at some sort of plotline surrounding him or even making him a hidden playable character / boss.
Your average (??) 20 year old university student who studies by day and plays games, watches anime (and so-forth) every other moment of the day. Has been writing for The Otaku's Study for over five years (as the one and only writer) and enjoys writing about a wide variety of media products.