The following are known Action Replay Codes for Alex Kidd in Miracle World on SEGA Master System.

• Infinite Lives
  00C0-2502
• Infinite Money
  00C0-30CC
• Power Bracelet
  00C0-4D01
• Magic Capsule A (Attack)
  00C0-4601
• Magic Capsule B (Barrier)
  00C0-4701
• Teleport Powder
  00C0-4A01
• Cane of Flight
  00C0-4901
• Telepathy Ball
  00C0-4801
• Moonstone Medallion
  00C0-4B01
• Letter To Nibana
  00C0-4C01
• Hirotta Stone
  00C0-4E01
• Start Level With Motor Bike
  00C0-5407
• Start Level With Speed Boat
  00C0-5101
• Level Select (Replace ? With 0-F)
  00C0-230?
• Level 16 – Janken’s Castle (Janken The Great)
  00C0-2310
• Final Level – Cragg Lake (Crown)
  00C0-2311