Game Genie Code

Sonic & Knuckles - Action Replay Codes [US]

The following are known Action Replay Codes for Sonic & Knuckles 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 Rings
    FFFE20:00C8
  • Infinite Lives
    FFFE12:0009
  • Infinite Continues
    FFFE18:0009
  • Only Need 1 Blue Sphere For Chaos Emerald
    FFE438:0001
  • Only Need 1 Blue Sphere For Chaos Emerald (On An Actual System)
    FFE439:0001
  • Stage/Act Modifier
    FFFE10:XXYY

    Quantity Digits for “XX” (Stage):

    04 – Flying Battery
    07 – Mushroom Hill
    08 – Sandopolis
    09 – Lava Reef
    0A – Sky Sanctuary
    0B – Death Egg
    0C – The Doomsday
    14 – Bonus Stage(?)
    15 – Bonus Stage
    16 – Lava Reef [2]
    17 – Death Egg [2]

    Quantity Digits for “YY”(Act):

    00 – Act 1
    01 – Act 2
    02 – Act 3

    Not all stages have acts 2 or 3.

  • Invincible (Only Tested On Sonic & Knuckles With Sonic 2)
    FFB02A:0002
  • Stage Select (Press A + Start)
    FFFFE0:0001
  • Infinite Time
    FFFE24:0005
  • Have All Emeralds
    FFFFB1:0007
  • Switch Effects On For Levitate Jump For Sonic Or Knuckles
    FFB01A:FE
  • Play As Knuckles
    FFFF0B:03
  • Play As Tails
    FFFF0B:02
  • Play As Sonic
    FFFF0B:01
  • Knuckles Level Layout
    FFB038:02
  • Tails Level Layout
    FFB038:01
  • Sonic Level Layout
    FFB038:00
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