Remember McDroid? A super-cheerful action-strategy, tower defencey thing which seems to exist purely so people can have a good time. It's been available to buy as fairly content-rich beta for a little while now (full release happens this Spring), and is also doing the Steam Greenlight community lapdance at the moment, so if you're undecided about taking action on either of those, you should probably play the demo.
You can grab the 60MB demo (goodness, 3D games being that small seems impossible by today's 10GB+ standards) from here, as well as buy the beta (which upgrades to the full version upon release) from here, or alternatively from Desura.
McDroid's also doing a four-day flash sale on IndieGameStand, down to $10 or pay what you want from its usual $12 until this Saturday.
Here's a recent video, because otherwise this post is TOO SHORT, and that means John and Jim would send me to bed without dinner again.
Level 8 - Abandoned Lab - Desura