Great game and great story! CD is a great game and has an interesting story! I have absolutely no problem with this game, but the special levels are difficult as the devils! I guess the special stages are supposed to be difficult, but trying to aiming the UFOs and actually hitting them, it is simply difficult and annoying ... Sega, I love this game, but what I do not understand is that the fact that in the special stage when it reaches a UFO with rings, the time of its rings decreases faster than before. In addition, Stardust Speedway Zone 2 is so confused, but you also go a little faster than the Super Peelout. But I stile ... This is the best Sonic game by far in my opinion. The American soundtrack is also the best of all Sonic games. Much better than the Japanese soundtrack. And blowing Sonic 1 or 2 out of the water. Despite your cons, this game is a devil of a gem. 2 large soundtracks (USA UU / JP) to keep it. Fun is truly infinite. Despite glycthes and insects, it is a fun game. If you have storage, you must get a Sonic CD. I also love the idea of ​​traveling at time and achieving \"driving 88\" as a reference to return to the future.