Doom 64 (Nintendo 64)

GameShark and Pro Action Replay Codes

Note:
A GameShark or Pro Action Replay cartridge is required to use the codes featured below.

North American (NTSC) version

Version 1.1

Hi-res mode:
80063333-FFFF

Suicide mode, no weapons:
800633EF-000F

Screen flashes green:
800633DE-000F

1,644,167,168 laser ammunition:
8006339A-FFFF

Laser:
8006338F-FFFF

Invincibility:
800633BB-0002

Yellow skull key:
8006334F-FFFF

Blue skull key:
80063348-0001

Red skull key:
80063344-0001
All codes above from Encrypt-Soulz.

Official codes from InterAct.
Official codes (v1.1) from InterAct.
Codes (v1.0) from The Game Shark Code Creator's Club.
Codes (v1.1) from The Game Shark Code Creator's Club.

Japanese (NTSC) version

Blue key:
80063AFF 0001

Yellow key:
80063B03 0001

Red key:
80063B07 0001

Blue Skull key:
80063B0B 0001

Yellow Skull key:
80063B0F 0001

Red Skull key:
80063B13 0001

Gun/Chain Gun ammunition:
80063B53 00FF

Shotgun ammunition:
80063B57 0064

Missile ammunition:
80063B5F 0064

Plasma/BFG/Laser Weapons ammunition:
80063B5B 0064

Always have Double Shotgun:
80063B3B 0001

Always have Chain Gun:
80063B3F 0001

Always have Missile Launcher:
80063B43 0001

Always have Plasma Rifle:
80063B47 0001

Always have BFG 9000:
80063B4B 0001

Invincibility:
80063B7B 0002