The following are known GameShark Codes for Q*bert on Sony Playstation (PS1).
These codes were also known as Action Replay Codes and in most cases will work on both devices.

These codes are for the U.S. version of the game.

Adventure Mode Codes
• Max Score
  80146A28 FFFF
• Infinite Lives
  30146A35 0003
• Unlock All Levels & Max Score
  50003504 0000
  80145D9C FFFF
  Note: GameShark Version 2.2+ Required

Classic Mode Codes

• Infinite Lives
  301131B0 0003