Played and enjoyed Limbo, newly out on PS. It's pretty short, but still quite a gem. Very simple controls: walk, jump and, um, fiddle. But the complexity is in the environment, which has lots of excellent puzzles set in your path, with great variety and ingenuity. A couple of the puzzles require some deft dexterity and coordination, but mainly brainpower is your primary weapon. And of course, there's the look. Again simple, but redolent of an early expressionist film fairy tale, or a dream. Or perhaps a nightmare, as some of the imagery is deliciously gruesome. The complete lack of explanation makes the whole thing a mystery that you can't help but ponder.