Asteroids Game Instructions: Basically you're in a space ship that has wondered upon an asteroid belt. An asteroid belt is like a storm of asteroids and you've got to protect your ship from the destruction they could cause. So you've got to be like the NRA and shoot your way out. Spin and move to dodge asteroids and blast them into pieces so they don't hit your ship. Use the arrow keys on your keyboard to move and your space bar to shoot.