The following are known Game Genie Codes for Dennis the Menace on Super Nintendo (SNES).

• Infinite Courage
  C9B7-4FD7
  C9B7-44A7
• Infinite Time
  C92F-3D9E
• Infinite Lives
  C9CB-44AF
• Infinite Credits
  C266-3FA7
• Collect 1 Big Coin to Finish Stage 1
  DFC6-CF6D
• No Scrolling in “The Park 2 & 5” Stages
  C968-346D
  Note: Turn this code off in order to exit.
• Invincible After Being Hit
  C9C2-4547
  C9C0-C937
• Have All Weapons
  3361-14DD
  3361-14AD
• Starting Stage Select
  ??66-14AD
  Modifiers
  • DF: The Park 1
  • D4: The Park 2
  • D7: The Park 3
  • D0: The Park 4
  • D9: The Park 5
  • D1: The Park 6
  • D5: The Park Boss
  • D6: Boiler 1
  • DB: Boiler 2
  • DC: Boiler 3
  • D8: Boiler 4
  • DA: Boiler Boss
  • D2: Sewer 1
  • D3: Sewer 2
  • DE: Sewer 3
  • FD: Sewer 4
  • FF: Sewer Boss
  • F4: The Woods 1
  • F7: The Woods 2
  • F0: The Woods 3
  • F9: The Woods 4
  • F1: The Woods Boss