Quantum Conundrum was really fun even though it was quite light. I could never really get into QUBE for some reason, but I've mostly enjoyed Antichamber even though the difficulty in some rooms is ridiculous.

It's not the next Portal. It is a pretty darn good first person puzzle game.

The storefront advert with the photograph (is the cat actually relevant?) and the hoard of "9/10" "8/10" etc. etc. plastered all over it really turned me off the game. Sounds as if it's good, but they need to sort out their image.