Bonus Rounds
Insert any non-Sonic Genesis cartridge into the Sonic And Knuckles cartridge. Hold A + B + C and press Start when the “No Way” message is displayed.

Level Select
Insert the Sonic The Hedgehog 2 cartridge into the Sonic And Knuckles cartridge. Press Up(3), Down(3), Left, Right, Left, Right at the title screen. A sound will confirm correct code entry. Press A + Start to display the level selection screen. This code will also all rings to be kept if your character is hit.

Debug Mode
Insert the Sonic The Hedgehog 2 cartridge into the Sonic And Knuckles cartridge. Play songs 1, 9, 9, 4, 1, 0, 1, 8 in order at the level selection screen. Then, select any level, hold A, and press Start. Screen coordinates will appear instead of a score and the number of objects displayed will appear instead of the time remaining. Use one of the following controller actions to enable the corresponding debug code. Note: This code may only be enabled on the first version of the game.

• Object Transformation
  Press B during game play to change Sonic into a game object. Press A to change into a new object. Press C to place an object on the screen. Press B again to revert back to Sonic. Note: The type of object that may be selectable will vary from level to level.
• Invincibility
  Sonic is, by default, invincible in debug mode.
• Slow-Motion
  Pause game play and hold B.
• Restart
  Pause game play and press A.
• Frame Advance
  Pause game play and press C.

Sound Test
Press A(2), B, A(2), B(3), A(2), B, C at the title screen to access the sound test for Zone 1. Press A(2), B(2), C(2), Up, Down, Left, Right, A, C, B, A(7) at the title screen to access the sound test for Zone 2. Hold Y and press Up, Left, Start(2) for the last sound test.

Extra Points
Jump and hit the end of act marker. 100 points are awarded every time the marker is hit.

Alternate Level Select
Insert the Sonic The Hedgehog 3 cartridge into the Sonic And Knuckles cartridge. Quickly press Up(2), Down(2), Up(4), after the Sega logo fades and Sonic starts to appear, and before the screen flashes white.

Although posted as a valid code on other web sites, it does not function in the retail version of the game.

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

Other Content for Sonic & Knuckles

• Sonic & Knuckles Game Index
• Action Replay Codes [US]
• Game Genie Codes