Yeah, Antichamber is pretty cool. I've managed to avoid buying anything so far (although I would have bought Dark Souls if my laptop could run it).Okay. That obviously makes sense for half the world. Didn't think it would be named different, though. Updated first post.
As for my own loot...I grabbed most in the last sales. Up to now, I've got the following:
Portal (ahem...only played a pirated copy. But with this price, it's hard to pass on it).
Left 4 dead bundle ('cuz...why not?)
commandos pack (nostalgia!)
antichamber (it's so minimalistic I had doubts. But it's worth every cent tenfold...thus far ).