Space games are a dime a dozen. Finding one that looks good is a bit of a challenge. Star Splitter manages to accomplish the task, though. This space-based rail shooter has bright and complex scenery and a pretty cool system for ship upgrades and universes to explore. For the price tag of free, it's a pretty well-rounded game.
The one major downfall is that the controls can be a bit janky. While you have your choice of accelerometer or touch screen controls, you only move the ship itself around. This, in turn, decides where your ship's guns are pointing. It's a bit like trying to walk a cat by attaching a rope to its tail.