- How to Play Help the rocket ship save space from the evil aliens! Use the left and right arrow keys to move from left to right. Press space to shoot missiles at the enemies to destroy them. Some enemies have more health than others. If you touch an enemy or an enemy's missile you lose a try. You get 3 tries. The game is over once you lose all your tries. (Full screen increases lag.) -----------------------------Tips--------------------------- - If you get lag go to options and reduce the lag from there. - If you gain an extra fighter USE IT TO YOUR ADVANTAGE, you can save that fighter to destroy enemies twice as fast as normal. (You lose the power up if you get hit by an enemy.)