Cheat Codes:Sonic & Knuckles

Cheat Codes

These are cheat codes which can be accessed by inputting button sequences or by various other methods.

Cheat Codes

• Level Select: While in Mushroom Hill Zone, jump on to one of the hanging platforms, then press L, L, L, R, R, R, U, U, U, A+Start. After being taken back to the title screen, select a character and press A+Start. Keep in mind that Sonic 3 levels are not available and that your character isn't able to go to levels it doesn't normally go to in the run of the game.
• Sound Test: On the Title Screen, press A, A, B, A, A, B, B, B, A, A, B, C to access the Sound Test for Zone 1. For Zone 2, press A, A, B, B, C, C, Up, Down, Left, Right, A, C, B, A, A, A, A, A, A, A on the Title Screen.
• Debug mode: Contrary to popular belief, there IS a debug mode available for this game. However, you need the Sonic 3 cartridge or ROM to do this. Simply start up Sonic 3 and Knuckles, unlock the level select and debug mode codes for that game and then highlight any level in the Sound Test, hold A, press Start, and release A when Sonic appears. Turn into a monitor, and paste a lot of monitors until you see things start to disappear. Then revert back to Sonic, and spindash into the monitors. The game will crash, and be buggy, if you're lucky. Press start, and then press A if necessary. If you are lucky, the game will redirect the the Sonic & Knuckles title screen. Choose any character, hold A then press start. You will be in the level select screen. Highlight any level, hold A, then press start. Note that if you choose any level before Mushroom Hill Zone, you will go into Mushroom Hill Zone instead.

In-level Functions, all versions:

Debug

Press B to toggle normal and debug mode.
Press A to advance forward through the debug object list.
Press A+C to advance backwards through the debug object list.
Press C to place the selected object at the current coordinates.
Current coordinates are designated by the top line of hex digits in the HUD.
Viewport coordinates are designated by the bottom line of hex digits in the HUD.

Slow-motion/Restart

During pause press A to fade to black and restart from the "SONIC TEAM PRESENTS" screen.
During pause press and hold B to enable slow-motion (this proceeds at half-speed, or 15fps, for as long as you hold the B button).
During pause press C to advance one frame.

Game Enhancer Codes

These are cheat codes that can only be used with game enhancer devices. Support for these codes is available in most emulators.

Game Genie

Official Codes, Sonic & Knuckles Alone

Code	Description
AAAA-CCCC	No Code

Unofficial Codes, Sonic & Knuckles Alone

Code	Description
AAAA-CCCC	No Code

Pro Action Replay

Unofficial Codes

Code	Description
FFFEEE:0000	No Code

Resources

• GameFAQ's - Regular cheat codes.
• The GSHI - Official Game Enhancer codes sepearated from User made codes.
• GSCentral.org User made Game Enhancer codes.