As said, I do like the plot, it's quite interesting. The graphics are great, gameplay is good, I like the stages in general BUT. Why, oh why is it so damn easy to die? There's like hundreds of places where you have to be 100% accurate with your actions or else you'll die. And die. And die. I don't even know how many times I had to see that damn continue screen. If you concentrate on anything else for just about 2 seconds, you'll probably fall to your death.
But, if we don't think about dying all the time, it's a good game. Not great, but good.
So if you like Sonic and have good nerves, go ahead and buy this game, but if you're one of those angry gamers and don't wanna break your TV throwing your Xbox controller to the screen, do yourself a favour and stay away.