A nice basic game with a procedural level generator. The core movement mechanics lack some control and feedback (I couldn't steer, only space to thrust right?) and therefore you sometimes crash into things which you can't stop. I did liked the feel of 'swinging' between orbits, which could definitely serve as a core mechanic for a game. Also, I'm not sure where the goal is so it becomes a survival game of sorts..
The procedural system shows the core challenge with procedural systems, as all levels kind of feel the same. On restarting the level, the level generator would hang and create massive black holes ;D