I recently finished off Portal 2 with my brother on co-op and the added co-op missions and we both really enjoyed it. I'm a lot older than him and he's fairly young, I'd preferably like him to not play so much CoD as he does (not that there's anything wrong with that) and I think Puzzle games are great for developing good problem solving skills. I was wondering if any duders have any suggestions of co-op puzzle/adventure/action games similar to Portal 2 on the PS3. I've heard Trine 2 is pretty good and I'm pretty keen on that. I'm looking at the newly released The Cave as well. How about any Pixel Junk games?