Shoot the enemy missiles by clicking the mouse.
Move your fighter using W/S keys, or arrow keys.
If you shoot 20 enemy missiles you go to scene 2.
If the enemy missiles hit your fighter its strength
gets reduced by 5%. If the strength becomes zero the game ends.
In scene 2 you encounter planets, which attract your fighter due
to their gravity. If you go too near these planets your fighter crashes into them.
In scene 3 you encounter land guns, which fire, at your fighter. Shoot at them
to destroy them.
