SchwarzChild

Premise:

You are a blackhole on a mission: consume the space colonies that aliens have been trying to develop. As you consume things such as asteroids and planets, you gain mass from them. Don't consume too much or you'll enter a state of critical mass and become uncontrollable and that leads to game over!

Controls:

WASD to turn around

Spacebar to accelerate forward

Left Shift to slowdown/stop

Tab to eject mass. (Ejecting mass costs a colony. If you have no colonies consumed, you can't eject mass.)