Penny Arcade Adventures: On the Rain-Slick Precipice of Darkness: Episode 3
It was just released on Steam today. Who's gotten it? It comes with Cthulu Saves the World and Breath of Death VII as well if you buy it before next week!
I played through the first few dungeons, and it's a basic RPG, but a fun one. Great writing, bizarre enemies, and an interesting original character in Moira, Tycho's ex wife and beat detective. My only disappointment is the music -- it lacks the quirky flair of the first two games and is pretty standard chiptune fare.
Still, a fun time. I recommend it, especially if you're a fan of the comic.