Though this is a co-op game through and through, you can play it by yourself, and a lot of work clearly went into making that possible and not unpleasant. Your AI partner is as skilled as any I’ve ever seen in a game, and he never really gets in your way, although he did seem to wander off cliffs with alarming regularity. Then again, you’ll probably walk off cliffs plenty on your own, so it’s hard to call that s flaw in the programming. Still, props to Insomniac for creating an AI partner that seriously works well. It’s hard for me to recommend All 4 One because, thanks to its lack of linear nature and constant arena battles, it doesn’t quite feel like a legit Ratchet & clank adventure. We have high expectations for this franchise after the last two amazing efforts on PS3, and this game just doesn’t really live up to that. Still, you could do worse. It’s just s shame that this didn’t turnout to be one of the premier hang-out-with-your-buddies games for the year, like LittleBigPlanet 2 and Portal 2.