I do not mean to sound really pesimistic on this game, but i was kind of disapointed. I mean, it is a good game and all, but it seems like the levels goe from really easy (where you can just hold right and finish the level) to really hard (whjere you cant run because of traps and enimies). I mean, it is a good game, and it is fun, it is just that i think with all of what everyone has been saying about it, i expectied it to be REALLY good and long.
I suppose that i am just comparting it to much to sonic 3 and knuckles. I thought that game was great, had a lot of levels, and they changed slightly for each character.
All in all, it is a good game, just do not expect it to be like the best game ever. I would recommend it though, and the speed boost thing is great. Also, i hate those stupid rockets that are in the later levels. I mean, how are you supposed to controll them?