I got a PSP just for this game, and let me just say... Holy fuck. It's basically Kingdom Hearts II with a better battle system, which makes me a happy guy. Like, Kingdom Hearts II is one of my top five favorite games of all time and I honestly think Birth by Sleep is more fun. The battle system is fucking awesome, you get to play as a complete badass instead of a bitch like Sora, and there's no asshole party members. It's just you, with an arsenal of cool-ass moves, murdering everything. And it's PORTABLE. I play that shit in my car between classes.