If you're looking for a good bargain, look no further than Robotriot. A platformer with some shooting elements, you take control of Slug: a hovering robot with a rotating turret. The game has you hopping on platforms, gunning down enemy robots, and dodging bullets. For $1, it offers nice pixel-art graphics, fun gameplay, and its own little personality over 12 levels. When talking bang for your buck, I can't recommend it enough!