Check out 30 minutes of Sonic Generations footage!
http://www.youtube.com/watch?v=ibuHW981wCE German website giga.de has posted a video featuring 30 minutes of gameplay from Sonic Generations! In this you can see the hub worlds, unseen parts of levels like Chemical Plant, and other things which I won’t spoil here. It might be a tad spoileriffic for some of you, but…