DOOM 64
The ULTIMATE CODE
At the password screen, enter: W93M 7H20 BCYO PSVB. This
will give you 100% health, 200% armor, all weapons, full ammo, the
backpack, 3 pentagram items for your laser, and levels 29-31
complete.
Enter: ?TJL BDFW BFGV JVVB to enable God Mode, all
levels, all weapons, full ammo, full maps, and full health.
Here are the passwords. Click below for the skill level.
Be Gentle!
Bring It On!
I Own Doom!
Watch Me Die!