All Working ZZT Cheats - PC

Cheat Mode
Hold [Shift] and press [?] during game play. Enter one of the following codes in the black box to activate the corresponding cheat function.

gems - Gems
keys - All keys
zap - Clear surrounding four squares
ammo - Ammunition
+debug - Debug mode on
-debug - Debug mode off
health - Full health
torches - Gain torches
dark - Darken room
-dark - Lighten room

All color keys cheat
Push [?] in the game, then type KEYS in the box appearing above your status. You'll have one of each color of key(blue, green, cyan, red, purple, yellow, white.)

Invisible demon
You must defeat the invisible demon in the Caves of ZZT, when going to get the key in Hell. The demon will only stay on the sides of the room.

Restart after you have lost
If you get killed by anything that will not indefinitely reproduce, after everything speeds up, wait until every creature gets to you, then enable the health code. This will give you 50 health points. Save the game, quit, then reload your game.