The following are known GameShark Codes for Duke Nukem on Sony Playstation (PS1).

• Have the Chaingun/RPG
  800eca1c 0101
• Have the Shotgun
  800eca1a 0101
• Have Devastator/Freezer
  800eca20 0101
• Have Pipe Bombs/Shrink Ray
  800eca1e 0101
• Infinite Chaingun Ammo
  800ec940 00c8
• Infinite Devastator Ammo
  800ec948 0063
• Infinite Freezer Ammo
  800ec94c 0063
• Infinite Pipe Bombs
  800ec944 0032
• Infinite Pistol Ammo
  800ec93c 00c8
• Infinite RPG Rockets
  800ec942 0032
• Infinite Shotgun Shells
  800ec93e 0032
• Infinite Shrink Ray Ammo
  800ec946 0032