Player 1 uses WASD, Player 2 uses Arrow Keys. F and SPACE shoot. Destroy the other player's planet to win. Every time you re spawn, your planet loses 100 health. If your planet has less than 100 health, you will not re spawn and an interplanetary war will start.
I made asteroids, then I had the idea of two player asteroids. I started working on that, and it slowly morphed into this.