The following are known GameShark Codes for Descent Maximum on Sony Playstation (PS1).

• Always Have Earth Shakers
  800e933a 0063
  800f8668 0009
• Extra Weapons
  800e930c ffff
• Infinite Energy
  800e92fe 03e7
• Infinite Lives
  800e9304 0404
• Infinite Shields
  800e9302 03e7
• Infinite Vulcan Ammo
  800e9316 270f
• Level 5 Laser
  800e9306 0404