I've gotten a couple of perfects and failed others. It depends on the game. I'm at the part with the towers. I play RPM because I want to become better at rhythm. Like, my style of playing is that I'd rather play a game that's too difficult for me over and over until I beat it, than a game that's too easy. I'm not good, but I've beaten some hard games (like the original Castlevania) this way.