Name     : Hybris


Load the game as usual and don't do anything until the high score screen
appears. Type [COMMANDER] and then press the fire button. After a few
moments press <F10>. If your ship flickers you are now invulnerable, and
have infinite expansions and smart bombs.

<F1>-<F5> = Other six levels of "expansion" (you can still capture capsules)
<F8>      = Advance a level (There are three)
<F10>     = Turn cheat mode on/off

You cannot get a high score with the cheat mode on.