Because of the PSP limitations the controls are worse, the gameplay loop is smaller and more repetitive and the soundtrack is almost entirely reused (Don't think this one is fault of the PSP just laziness). I enjoyed the setting, cute visuals and dialogue which as usual are all on point but the super repetitive loop and small selection of levels made it a bit of a trudge to get through. The idea of having day and night cycles for levels is great though, and nothing beats being able to play Katamari on the go. Probably ranking 5th just above I Touch Katamari