Way late to the party, but I got it for 2 bux, so I am fine being late:
Bulletstorm = win
Yeah, much joyfun beautiful friend.
I like achievements and the kind of grinding to get them sometimes and bulletstorm was good for that, plus it had a good sense of humor and was overall pretty fun.
Speaking of being late to the party I'm kinda on/off playing Super Meat Boy, I 100%'ed the first 3 worlds, finished the next three in light world, and am halfway through the last, think I hit the wall of what I can conceivably do though, and my jump button thumb is kinda blistered from it. So might quit if something else grabs me for quick pickup type play.