Space War

You command a spaceship travelling through the universe. Your job is to keep the spaceship safe for as long as possible. There will be asteroids coming from every direction. Move the spaceship and fire missiles to survive. Collect ammo to resupply your missiles. Collect health packs to resupply your health. There are 3 modes: Easy, Medium and Hard. The harder the mode, the faster the asteroids will be and the fewer lives and missiles you will have. Destroy asteroids with missiles to score points. Set the highest score possible!