All Weapons and Infinite Lives:
Before launching Raptor, type "SET S_HOST=CASTLE" at the DOS prompt. When you start the game you'll have infinite lives and all weapons. This code will expire after a few levels
To battle cows, monkeys and other critters, set your system date to match the programmers' birthdays:
March 12 Bobby Prince
May 16 Scott Host
August 28 Rich Fleider
October 2 Jim Molinets
Alternatively, turn on all the switches at the bottom of the Episode Select screen and darken the button. A sound will confirm this code.
Start any mission that has a weapon in it (aside from your default lasers.) Abort the mission then sell the weapon you were given and repeat the process. Keep doing this to get a lot of money!
Free Deathray and Health - Registered Version Only
While playing, press BACKSPACE to restore your health and gain a free deathray. You can press BACKSPACE as many times as you like for more deathrays. When you have enough, sell the excess for quick cash.
At the episode select screen, press Z, X, or C (Z is Episode 1, X is Episode 2, and C is Episode 3) then press a key between Q and O on the keyboard (the top row of letters.) Q is Level 1, W is Level 2, etc.
Note: Trying to warp to a registered episode in the shareware version will crash the game.
Cheat God Mode:
While playing, press G, X, M and P buttons to enter in the god mode, now you no take damage. (Unverified).