[aidos]

In the original Doom you could use IDKFA and IDDQD for infinite ammo and godmode (from memory!)

[bombcar]

IDSPISPOPD!

Got it right!

Back then cheat codes were hard to find, especially if you found doom on shareware floppies and didn’t have BBS access to the DooM FAQ.

[hulitu]

> Back then cheat codes were hard to find,

And a couple of years later we had dlh.net

[jonathanlydall]

IDKFA: I Did Kill Fucking Alien

[rezaprima]

I think it's id-Key-Full-Ammo