Knuckles the Echidna in Sonic the Hedgehog 2/Hidden content

Cheat Codes

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

Cheat Codes, Knuckles in Sonic 2 Locked-on

• Zone Select: At the Title screen press Up, Up, Up, Down, Down, Down, Left, Right, Left, Right. The hold A and press Start.
• Debug mode: First enable the Level Select cheat then play tunes 01, 09, 09, 04, 01, 00, 01, 08 and you'll hear a ring chime. Then select a level with A + Start.
• Have all Chaos Emeralds: First enable the Level Select cheat then play tunes 01, 06, 07, 07, 07, 02, 01, 06 and you'll hear a Emerald chime.

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 reverse gravity in normal mode, in debug it places 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 Game Genie Codes, Knuckles in Sonic 2 Locked-on

Code	Description
AX6D-AA3W	Knuckles doesn't lose rings when hit.
HWLX-GA2Y	Infinite time.
SD5X-BJT2	Rings worth 2.
SD5X-BNT2	Rings worth 3.
SD5X-BTT2	Rings worth 4.
SD5X-BYT2	Rings worth 5.
SD5X-B2T2	Rings worth 6.
SD5X-B6T2	Rings worth 7.
SD5X-BAT2	Rings worth 8.
AE5X-AAFY	Knuckles starts with 1 life instead of 3.
AY5X-AAFY	Knuckles starts with 5 lives.
A65X-AAFY	Knuckles starts with 7 lives.
BE5X-AAFY	Knuckles starts with 9 lives.
DE5X-AAFY	Knuckles starts with 25 lives.
GJ5X-AAFY	Knuckles starts with 50 lives.
KN5X-AAFY	Knuckles starts with 75 lives.
NN5X-AAFY	Knuckles starts with 99 lives.
JV1D-CA6W	Infinite lives.
PVWD-CRDC	High jump for Knuckles.
ABWD-CWDC	Super jump for Knuckles.
ABWD-C2DC	Mega jump for Knuckles.
ABWD-DTDC	Orbital jump for Knuckles.

Unofficial Codes, Knuckles in Sonic 2 Alone

Code	Description
AAAA-AAAA	No code.

Pro Action Replay

Unofficial Codes, Knuckles in Sonic 2 Locked-on

The RAM seems to be the same between Sonic & Knuckles and this version so the codes are the same.

Code	Description
FFFFFF:0000	No Code.

Resources

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