There's plenty of obstacle avoiding games out there. Well, you can add the newly released (and incredibly good) Thrustburst to the mix. Featuring simple yet elegant graphics and gameplay, it's an excellent little freeware game to spend some time in, especially if you are the sort of person who has to do just... a little... better.

The goal of the game is to reach the core of each asteroid, dodging walls and enemy fire while destroying the defenses of the core. On the way, in order to get power for your weapons, you have to graze the walls of the asteroid's interior. Since the deeper you get, the faster you go, this becomes a frightening prospect indeed. Beyond this, there's not much. But the game is quite good, especially for a freshman release from newly formed Umlautgames. You can download it off the official site.