I just found my old megadrive and this game and played on it, I realized how good it was and how fun to play it is. I remember when I was 6 and played on this and still I enjoy it. It is a challenging game and even now i can't get past the second level easy (i keep drowning) I used a cheat to play on the other levels and they are as hard. The only level I don't like is Special Stage cause i hate the 3D graphics for it. The levels all are challenging except for the first one, the only ones I completed are Casino, Emerald Hill and Hill Top the others are harder. The bosses are generally easy depending on where you are. The last boss I extremely hard and another thing is you don't have any rings to protect you. Overall this is a classic game which most people should enjoy.