Cosmo's Cosmic Adventure

+ Customer Cheat - Pressing [C] [0] [F10] down simultaneously will give you a full health and bombs. This cheat only works once per game.

+ Debug Mode - Pressing [tab] [del] [F12] at once activates debug mode. The debug keys are:

[F10] [G] - God mode

[F10] [W] - Warp

[F10] [M] - Display memory usage statistics

+ Command Line Parameter - Give "apogee" on the command line when starting up Cosmo. The effects of this are many. One, the game will not recognize your old high scores or saved games. (The high scores will be reset to those of Simpsons' characters until you exit and re-enter the program normally.) In this mode, if you die quickly enough after entering a level, you'll be invincible from then on, to everything but pits on the bottom of each level.

Cameos           

Duke Nukem makes an appearance in Cosmo's Cosmic Adventure!

In the registered version of Cosmo's Cosmic Adventure in one of the secret areas, if you are lucky, you will get to see Duke Nukem.  He rockets off with his jetpack, probably off to save the earth from aliens again.

Who made Cosmo's Cosmic Adventure?