Actually a perfect game. I swear, ever since I was like 7 playing this for the first time on my Retro Duo, this game has just gotten better, and better, and more and more fun with every playthrough. I think part of that has to do with all the cool moves you can do and how all the abilities and power-ups make for a different experience every time you run through a stage. I think it's also due to how much fun finding all the exits and unlocking all the secret levels is. It's probably also due to the perfect sense of difficulty throughout, where things are indeed challenging but never frustrating.

I honestly cannot thing of even one flaw. This is one of the greatest games of all time.

10/10