Action Replay Codes [US]

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

  1. Infinite Rings
    FFFE20:00C8
  2. Infinite Lives
    FFFE12:0009
  3. Infinite Continues
    FFFE18:0009
  4. Only Need 1 Blue Sphere For Chaos Emerald
    FFE438:0001
  5. Only Need 1 Blue Sphere For Chaos Emerald (On An Actual System)
    FFE439:0001
  6. 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.

  7. Invincible (Only Tested On Sonic & Knuckles With Sonic 2)
    FFB02A:0002
  8. Stage Select (Press A + Start)
    FFFFE0:0001
  9. Infinite Time
    FFFE24:0005
  10. Have All Emeralds
    FFFFB1:0007
  11. Switch Effects On For Levitate Jump For Sonic Or Knuckles
    FFB01A:FE
  12. Play As Knuckles
    FFFF0B:03
  13. Play As Tails
    FFFF0B:02
  14. Play As Sonic
    FFFF0B:01
  15. Knuckles Level Layout
    FFB038:02
  16. Tails Level Layout
    FFB038:01
  17. Sonic Level Layout
    FFB038:00
These codes have been collected from around the web and all credit goes to the original poster of the code. Notes associated with any code may be written by the original code creator. Some notes have been added or modified from their original source.

Do you know any additional codes for this game? Is there an error listed above? Let us know about it and we’ll update the list.

Code Indexes for SEGA Genesis / Mega Drive Want an Action Replay for SEGA Genesis? Click here to find it on Amazon!

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