It's a very good game, great Grapics, rating Grapics:9.5/10 Fun rating:8.5/10 Gameplay, how long it lasts, well about 15-20 hours to do everything, but im a advence player, a avarage person about 20-25 hours, So Gameplay:8.5/10 The sound is GREAT! I really like what Sonic Team did for the sound, sound rating:9.5/10 and Overall, I would say 9/10 and or me, 9 out of 10=awesome. Now the game is with 6 playable characters, Sonic:The main fast blue hengehog, Tails:The two tailed fast, and flying fox, Knuckles:The echina, he glides and he is red, very cool, Amy:Sonic's pink "Girlfriend" Big:A purple big cat that fishs to get fish, and a red robot, EOC=2. Sorry if I got the robot's name wrong, I haven't played it in a while. One thing I have say if you don't have it "GET IT"!