Type these inside a game level and press RETURN:
 | dload = Kills game and goes back to Windows desktop |
| fly = Fly mode on/off |
| getalife = Unlimited lives |
| goto = End current level |
| normal = Normal game speed |
| pede = Create a Centipede nearby |
| robot = Automatic movement and firing until player makes a movement and fires a shot |
| slow = Slower game speed |
| sloww = Even slower game speed |
| slowww = Much slower game speed |
| slowwww = Slowest game speed |
| wimp = God mode on/off |
