The following are known GameShark / Action Replay Codes for Fighters Megamix on SEGA Saturn.

• Master Code
  F6000914 C305
  B6002800 0000
• Infinite Time
  160F106A 0B00
• Infinite Energy P1
  1606552C 00FA
• 1-Hit Death P1
  D606552C 00FA
  1606552C 0001
• Infinite Energy P2
  1606732C 00FA
• 1-Hit Death P2
  D606732C 00FA
  1606732C 0001
• Enable All Characters
  1609FAA8 FFFF
  1609FAAA FFFF