Go as long as you can without being shot. When you die, who you were killed by, your time of survival, and your high score will apppear. Try to get a really high score.
To move, use the arrow keys. If you press down in midair, you will fall faster.
To erase high scores, press space.
If you want to erase the high score, press space.
At the beginning, the only thing in your way is a sniper rifle, which is easy. However, every ten seconds, a new "launcher" appears, making it harder and harder to stay alive. My highest score is 47 seconds.