Grimrock

Yes! I hope it'll be available through Steam without having to buy it a second time.

Here's another vote for an OS X version. I've already bought the game, and played it on a machine with bootcamp, but rebooting was becoming a chore. (In fact, rebooting is fine, it's learning about "critical updates" that is a bit bothersome.) I really like the game, and would like it even...

Count this as another vote for the Mac or iPad version. Hopefully there will be a preorder as well, so that we can show you how enthusiastic we are.