I picked up the latest Humble Indie Bundle, with Frozen Synapse, Space Chem, Trauma, Trine, and Shadowgrounds.
Frozen Synapse is the titular one, but it has probably impressed me the least of all the titles. It's a neat sort of concept, but it just didn't really draw me in like I'd hoped.
I'm much more impressed by Trine and Shadowgrounds. Shadowgrounds single player is pretty awesome (though the multiplayer is local-only, and feels pretty tacked-on and buggy). It's still fun to team up and slaughter aliens, but the single player feels more like an actual game, where the multiplayer was spent mostly fighting with the controls.
Trine has pretty heavy system requirements (My computer runs it really slow, though Fayth's (much newer) computer runs it very smoothly even at high detail), but it has impressed me in both single and multiplayer modes. It's a very different game when you have all 3 characters being played at once than when you're controlling all 3 at once. In multiplayer, you have to use the ways your characters interact with each other to solve puzzles, where you literally switch between them in midair when playing by yourself.
So yeah, that's what I've been playing the past few days.
(Sorry for the rambling review)