a cute little game but honestly its VERY repetitive. you do the same few size goals on the same few maps, with the only level variation (if you can call it that) being kind of island an animal wants (hard, soft, loud, etc.) and there are only 5 stages with special rules (i.e. roll up as many sweets as you can). that and the king is strangely too nice in this game. all that being said though, i am a sucker for how the game looks, being on a psp n all. the low res texture they used for the cousins' faces is really charming.
about the controls, i cant really say much cuz i quickly mapped the buttons to the analog sticks on my controller. but maybe that in itself says all you need to know.
overall i wouldnt say you shouldnt play it but i wouldnt say its a must-play. check it out if you really want to cuz its somewhat of a novelty, having katamari on the psp

this game is phenomenal all around. hearing that both jsr AND jsrf were rushed games, only to see how much time, effort, and love the devs poured into game's cutscenes and gameplay and everything else gives me a very complete and fulfilling feeling abt it, so as a huge jsr fan its truly a miracle to have a game like this

only complaint is that i wish the game had little challenges like how the jsr games had the "jet tech", "jet graffiti", etc. challenges where youre just getting a better time than what you set or getting a better score than what you got. other than that the game is pretty much flawless. no doubt im biased though