The following are known Action Replay Codes for King of the Monsters on SEGA Genesis / Mega Drive (Genesis).

The codes should work with the region specified but may work for other regions as well.

Device Compatibility: Action Replay

• Infinite Energy P1
  FF3B37:3C
• Infinite Energy P2
  FF3D37:3C
• No Energy P1
  FF3B37:00
• No Energy P2
  FF3D37:00
• Character Highlighter P1
  FF1529:XX
• Character Highlighter P2
  FF152D:XX

Character Modifiers

• 00 – Green Dragon
  01 – Beige/Red Crab
  02 – Rock Character
  03 – Superhero
• Level Highlighter
  FF15F9:XX

  00 – Stage 1
  01 – Stage 2
  02 – Stage 3
  04 – Stage 5
  05 – Stage 6
  06 – Stage 7
  07 – Stage 8

• P1 Is Frozen In-Place
  FF3B2B:A2