[TUTORIAL] Cheat codes on Wii, GameCube and DS in 2026 (Gecko, Action Replay, Nintendont, TWiLight Menu++)

Step-by-step Wii tutorials: mod your Wii, install the Homebrew Channel, cIOS and a USB Loader, back up and unbrick your console.
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[TUTORIAL] Cheat codes on Wii, GameCube and DS in 2026 (Gecko, Action Replay, Nintendont, TWiLight Menu++)

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Automatically translated from French.

[TUTO] Codes de triche sur Wii, GameCube et DS en 2026 (Gecko, Action Replay, Nintendont, TWiLight Menu++)

Geckocodes.org has shut down, and the GameCube Action Replay no longer boots: here is how to use cheat codes on Wii, GameCube and Nintendo DS in 2026.
The codes themselves have not changed: it is the tools and the sites that distribute them. This guide starts from the loaders you already use.


Where to find codes in 2026
  • Wii and GameCube: geckocodes.org no longer exists (it redirects to GameHacking.org). Its content is preserved by the mirror codes.rc24.xyz, the one used by Dolphin and WiiFlow Lite. One page per game, identified by its six-character code (for example GALE01 for the US version of Super Smash Bros. Melee); you download a.txt file.
  • Nintendo DS: the database by DeadSkullzJr, distributed on GBAtemp in usrcheat.dat format, is the reference. It covers the vast majority of games: Zelda Phantom Hourglass has more than a hundred codes in its European version (infinite health, unlimited hourglass…).
The six-character code of a Wii or GameCube game is shown in USB Loader GX, WiiFlow and Dolphin.


Wii: USB Loader GX
  1. Put the game's.txt file in txtcodes/, at the root of the boot device (SD or USB).
  2. In USB Loader GX, open the game and choose the codes to enable: the loader creates the.gct file in codes/.
  3. Enable the Ocarina option (set to “On” or “Ask”), in the global settings or the game's settings.
USB Loader GX's built-in code download still points to the old site: if it fails, get the.txt from codes.rc24.xyz on a PC. Another pitfall: the.gct must be on the same partition as the game.


Wii: WiiFlow Lite

WiiFlow Lite (5.6.2, June 2026) has a Cheats screen that downloads the codes itself from codes.rc24.xyz: select the game, open that screen, tick the codes and launch. The files are stored in WiiFlow's codes/ folder (the.txt files), and codes/gct/ (the.gct files). Our WiiFlow Lite tutorial explains the installation.


Wii: Gecko OS, for original discs

Gecko OS (1.9.3.1, still on the Open Shop Channel) launches an original disc with its codes, stored in sd:/codes/ or sd:/data/gecko/codes/. It has not been updated since 2010 and does not launch games from a hard drive: for that, use a USB loader. To manage your codes on the console, Cheat Manager reads the.txt files from sd:/txtcodes and produces the.gct. Accio Hacks, which downloaded from geckocodes.org, no longer works.


GameCube: Nintendont rather than the Action Replay

Datel's GameCube Action Replay disc requires the official GameCube BIOS: a copy of it generally does not boot, whether burned or in a loader. No need to look for it, the modern method is simpler:
  1. Put the game's ID6.gct file (for example GALE01.gct) in /codes/, or in the game's folder under the name game.gct.
  2. Enable the cheat codes option in Nintendont's settings, then launch the game.
When launched from USB Loader GX, Nintendont receives the path of the chosen.gct directly. If the file is too large, Nintendont refuses to load it: keep only the codes you need. Everything else about Nintendont is in our dedicated tutorial.


GameCube: back up your memory cards with GCMM

GCMM (GameCube Memory Manager, 1.5.2) copies saves from a real GameCube memory card to the SD card (folder sd:/MCBACKUP/, in.gci format), and back again. It can also make a full image of a card, delete a save or format. It works on Wii (SD, USB) and on GameCube (SD2SP2, GCLoader). The.gci files can be reused in Nintendont and Dolphin.


In the Dolphin emulator
  1. Enable Config > General > Enable Cheats (greyed out while a game is running).
  2. Right-click the game > Properties: the AR Codes (Action Replay) and Gecko Codes tabs let you tick codes, and the Download Codes button fetches them from codes.rc24.xyz.

Nintendo DS: TWiLight Menu++ and melonDS
  1. Download DeadSkullzJr's usrcheat.dat and copy it to sd:/_nds/TWiLightMenu/extras/. On 3DS, Universal-Updater installs it automatically (“NDS Cheat Databases”).
  2. In TWiLight Menu++ (27.24.1), highlight the game, press Y (game settings), then X (cheat codes), and tick the ones you want.
  3. If the game crashes, a code is incompatible with nds-bootstrap: the L button disables all the game's codes; re-enable them one at a time.
On PC, melonDS (1.1) imports that same file directly: System menu, tick Enable cheats, then Setup cheat codes and import the usrcheat.dat. To install TWiLight Menu++ on your card, see our DS and R4 flashcart tutorial.


The most common errors
  • No code activates: the Ocarina option (USB Loader GX) or Cheats option (Nintendont, Dolphin) was left disabled.
  • The file is not found: the.gct is not named exactly after the game's six-character code (watch the version: PAL and NTSC do not have the same code, nor the same cheat codes).
  • The game freezes at startup: an incompatible code, or one for another version of the game. Test them one at a time.
  • USB Loader GX does not download anything: use codes.rc24.xyz.

⚠ Warning: never use codes online: on community servers (Wiimmfi), cheating is detected and punished. And save your game before trying an unknown code.


Sources and official guides: Wii and GameCube codes · USB Loader GX · Gecko OS · GCMM · TWiLight Menu++: FAQ · DeadSkullzJr database

Tgames does not provide games, BIOS or keys: only use backups of your own games and your own console. Have a question? Reply to this topic.

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