"What problems might you have with the game? Well, you can only control your troops once every four beats, but that's where all the challenge comes from, besides keeping the rhythm in general. You will still likely have to replay lots of old levels to get good enough to beat the game, which can get tedious if you aren't excited just to play. Also, this is sort of a genre of its own, not like anything you've played before. It's not really a strategy game, it's not much like other rhythm games, and calling it an RPG doesn't give you the whole idea either. It's really unique, and a must-play for PSP owners."