If the game freezes, just click inside it (games can get unresponsive if you click elsewhere on the page).
You are an alien. Earth bunnies won’t stop multiplying.
That’s annoying. Kill them by hurling asteroids at them.
Move: WASD or arrow keys.
Fire: Click or left-ctrl
Rotate camera: Right-click or left-alt and move mouse.
Recenter camera: Space