^ I saw that last week, but I already purchased the Penumbra series and the other games didn't sound too appealing to me.

Now they've hit $1 million in sales, though, and they're open sourcing most of the games! That is... highly unusual, and IMO very much worth supporting. Since the bundle has been extended for a week, I've pitched in.

http://games.slashdot.org/story/10/05/11/1932233/Indie-Pay-What-You-Want-Bundle-Reaches-1-Million