Let me boil it down, basically, the whole game is composed of platforms suspended in mid air, so your biggest enemy isn't Eggman, nor Metal Sonic, it's the fall to your doom. The only characters that were useful in the game were the Tails and Kunckles, Tails can fly, and Kunckles can beat enemies, and Sonic is only good for leaping to your doom since whenever you decided to do something fast, you'll end up running over the ledge and fall. This really puts Sonic in the background, it's ironic how his name is actually in the title of the game. And if you were planning to buy this game for a son, daughter, or a nephew, don't bother, because they'll end up spending half the time crying, and half the time angry. Lastly, after spending nearly 6 hours of cursing and replaying, if you actually managed to get all 7 emeralds, you'll get to fight the final boss, so you spend time suffering, just to suffer some more? Very little replay value, gives you nightmares, I'd rather be spending time playing Sonic 3 and Kunckles on the Genesis (which is still the best Sonic game) then this disaster. Rent it, don't buy it. Don't get me wrong, the first 4-6 levels are fun, then you'll be cursing and swearing all the way to the credits.