Doom (Version 1.0) Codebreaker Codes (NTSC-U)
This page contains CodeBreaker cheat codes for Doom (Version 1.0) (NTSC-U) for the Playstation 1. Depending on if you're playing this game on a physical console or an emulator will determine how you use the codes found on this page. People using a physical console will need to purchase a physical CodeBreaker device to use the codes.
Anyone who is using an Emulator will have a much easier time getting these codes to work (assuming your Emulator supports them). One of the most popular Emulators for the Ps1 is ePSXe and if you'd like to learn how to use the codes on this page for that Emulator, check out my how to get cheat codes to work with ePSXe guide. If you don't see the code you want on this page I recommend you return to my Doom (Version 1.0) Guides Index and choose a different section.
Mega Rapid Fire: 800A86C0 0001
Unlimited Bullets: 800A8664 0064
Unlimited Shotgun Shells: 800A8668 0064
Unlimited Rockets: 800A8670 0064
Unlimited Plasma: 800A866C 0064
Have Shotgun: 800A8648 0001
Have Double Barrel-Shotgun: 800A864C 0001
Have Chaingun: 800A8650 0001
Have Rocket Launcher: 800A8654 0001
Have Plasma Rifle: 800A8658 0001
Have B.F.G. 9000: 800A865C 0001
Have Chainsaw: 800A8660 0001
Have Red Key: 800A8614 0001
Have Blue Key: 800A8618 0001
Have Yellow Key: 800A861C 0001
Night Vision On: 800A8610 0001
Turn On Level Map: 800A860C 0001
More Light: 800A8612 0001
Have All Guns
50000704 0000
800A8648 0001
Infinite Ammo
50000404 0000
800A8664 0064
Invincible
800A85FC 0001
800A85F4 00C7
800A85F0 0064