So far I've only bought Borderlands, Beat Hazard, and QUBE, and I think that's all I'll be getting
Now's a good time to pick up Cave Story+ if you haven't already
$2.50 for updated graphics, sound, and challenges is a pretty good deal if you ask me (you can use old graphics and sound while playing if you so choose, I personally like to keep the sound on the "old" setting)