Bargain at only £20 for PS2, i think its available on PC aswell but I reckon the co-op play on this and family-friendly gameplay make it a better buy on PS2. (Oh right yeah, i suppose the xbox would be alrtie aswell)
Watch IGN's vid review:
http://media.ps2.ign.com/media/694/694419/vids_1.html
I'm thinking of picking this up, i love the idea of that co-op feature. If anyone knows if i could get it even cheaper, bonus.