Cheat Code Reference

Detailed reference for all cheat code formats supported by the Cheat Code Converter.

Game Genie

NES Game Genie

Format Length Fields
AAAAAA 6 chars Address + Value
AAAAAAAA 8 chars Address + Value + Compare

The NES Game Genie uses a custom letter encoding: APZLGITYEOXUKSVN.

Decoding:

  • 6-letter codes modify a single byte at a specific address.
  • 8-letter codes include a compare value — the byte is only replaced if the current value matches.

SNES Game Genie

Format Length Fields
AAAA-AAAA 8 chars + hyphen Address + Value

Uses a different letter set from NES. The address is scrambled with a bit-rotation algorithm.

Game Boy / GBC Game Genie

Format Length Fields
AAA-AAA 6 chars Address + Value
AAA-AAA-AAA 9 chars Address + Value + Compare

Genesis Game Genie

Format Length Fields
AAAA-AAAA 8 chars + hyphen Address + Value

Game Gear Game Genie

Format Length Fields
AAA-AAA 6 chars Address + Value
AAA-AAA-AAA 9 chars (with compare) Address + Value + Compare

Pro Action Replay

Format

All Pro Action Replay codes use an AAAAAA:VVVV format (hex address and hex value), though the exact address width varies by system.

Supported Systems

System Address Width Value Width
SNES 24-bit 8-bit
Genesis 24-bit 16-bit
Game Boy / GBC 16-bit 8-bit
Master System 16-bit 8-bit
Sega 32X 24-bit 16-bit
Sega CD 24-bit 16-bit

N64 GameShark

Format 

TTAAAAAA VVVV
  • TT — code type
  • AAAAAA — memory address
  • VVVV — value

Code Types

Type Description
80 Write 8-bit value to address
81 Write 16-bit value to address
A0 Write 8-bit value (uncached address space)
A1 Write 16-bit value (uncached address space)
D0 8-bit equal conditional — next code only activates if [address] == value
D1 16-bit equal conditional
D2 8-bit not-equal conditional
D3 16-bit not-equal conditional
50 Repeat/serial — applies the next code multiple times with incrementing addresses

GBA GameShark / Action Replay

Format 

TTAAAAAA VVVVVVVV

Supports 12 code types including:

  • 8-bit and 16-bit constant writes
  • Conditional codes (if equal, if not equal, if less than, if greater than)
  • Multi-line patches
  • Master code enable
  • Slow-motion toggles

GBC GameShark

Format 

AABBCCDD

8-character hex code encoding address and value for Game Boy Color GameShark devices.

PC Engine

Format 

AAAA:VV

Raw address:value pairs in hexadecimal. The address is a direct memory location and the value is the byte to write.

Neo Geo Pocket GameShark

Format 

AAAAAA:VV

24-bit address with 8-bit value in hexadecimal.

Nintendo DS Action Replay

Format 

TTAAAAAA VVVVVVVV
  • TT — code type (first byte)
  • AAAAAA — memory address
  • VVVVVVVV — value (32-bit)

Code Types

Type Description
0 32-bit write
1 16-bit write
2 8-bit write
3 If less than (32-bit)
4 If greater than (32-bit)
5 If equal (32-bit)
6 If not equal (32-bit)
7 If less than (16-bit)
8 If greater than (16-bit)
9 If equal (16-bit)
A If not equal (16-bit)
B Load offset
C Loop
D Various sub-types (end if/loop, next offset, end code, etc.)
E Patch code (multi-byte write)
F Memory copy

Supports 16 code types total. The D type contains several sub-type variations based on the address field.

Sega Saturn Action Replay

Format 

TTAAAAAA VVVV
  • TT — code type
  • AAAAAA — 24-bit address
  • VVVV — 16-bit value

Code Types

Type Description
16 16-bit write to address
36 8-bit write to address

The code type byte determines the write width. Address is in the Saturn’s memory map.

Sega Dreamcast CodeBreaker

Format 

XXXXXXXX YYYYYYYY

16 hex characters split into two 32-bit words. The first word encodes the code type and address, the second contains the value.

Code Types

Type Description
0 8-bit write
1 16-bit write
2 32-bit write
3 Serial / repeat write
9 Conditional codes

Game Boy GameShark

Format 

AABBCCDD

8-character hex code with scrambled address and value encoding, similar to the GBC GameShark format. Address bytes are reordered from the raw code.

Neo Geo Raw

Format 

AAAAAAAA VVVV
  • AAAAAAAA — 32-bit memory address
  • VVVV — 16-bit value

Direct address:value writes for the Neo Geo’s 68000-based memory map. Values are 16-bit (word-sized) to match the platform’s word-aligned bus.

PlayStation GameShark

Format 

TTAAAAAA VVVV

or

TTAAAAAA VVVVVVVV
  • TT — code type
  • AAAAAA — 24-bit address
  • VVVV / VVVVVVVV — 16-bit or 32-bit value

Code Types

Type Description
30 8-bit constant write
80 16-bit constant write
10 16-bit increment
11 16-bit decrement
20 8-bit increment
21 8-bit decrement
D0 16-bit equal conditional
D1 16-bit not-equal conditional
D2 16-bit less-than conditional
D3 16-bit greater-than conditional
E0 8-bit equal conditional
E1 8-bit not-equal conditional
E2 8-bit less-than conditional
E3 8-bit greater-than conditional
50 Repeat / serial code
C0 Delay activator
C1 Button activator
C2 Master code enable

Supports 18 code types total. Conditional codes gate the execution of subsequent codes.