GameCube – Game Boy Advance link cable
The Nintendo GameCube Game Boy Advance cable is a cable used to connect the Game Boy Advance to the GameCube. The cable serves different functions with different games. These functions include, but are not limited to: unlocking additional content, turning the GBA into a second screen, turning the GBA into a separate controller, or transferring in-game items between related games. When used with the Game Boy Player accessory, the GBA can be used to control any Game Boy game played through the GameCube.
The cable has one end that plugs into a GameCube controller slot and another end that plugs into the GBA's extension port. The cable is compatible with the GameCube and the original Wii on the console side, and the Game Boy Advance, Game Boy Advance SP, Game Boy Player, and e-Reader on the portable side. Because the Game Boy Micro has a differently-shaped link port, the official cable does not work with it, but enthusiasts have been able to hack together home-made versions which do.
Games
The following is a list of compatible GameCube games, with the corresponding Game Boy Advance game or N/A if no GBA game is required.| GameCube Game | Game Boy Advance Game | Features |
| All-Star Baseball 2004 | All-Star Baseball 2004 | Transfer trading cards between both versions. |
| Amazing Island | Access a playable card game on the GBA, which players can use to unlock new content. | |
| Animal Crossing | Used as a second screen for the GameCube to design patterns, to access a secret island and/or play a virtual pet style mini-game with the islander, and to play downloadable NES games. With the e-Reader, it allows scanning compatible cards for bonus items, patterns, and town tunes. The e-Reader support is absent in the European version. | |
| ' | Unlocks special modes on GBA version, but cannot be saved. The GBA link option is absent in both European versions. | |
| Billy Hatcher and the Giant Egg | Used to download and play unlockable minigames based on ChuChu Rocket!, Nights into Dreams, and Puyo Pop. | |
| ' | Enables a secret minigame. | |
| Crash Nitro Kart | Crash Nitro Kart | Alternately unlock three characters and all four cheats in the GBA version. |
| Dakar 2 | Used to play the unreleased GBA version of the game. | |
| Disney Sports Basketball | Transfer screenshots from the GBA to the GCN version. | |
| Disney Sports Soccer | Transfer screenshots from the GBA to the GCN version. | |
| Disney's Magical Mirror Starring Mickey Mouse | The Magical Quest Starring Mickey Mouse | Unlocks new content, and uploads items from the GBA to the GCN version. |
| FIFA Football 2004 | Unlocks new content and transfers game progress. | |
| Final Fantasy Crystal Chronicles | Required for each player in the multiplayer mode. Allows each player to control their character and access an individual menu, without interrupting gameplay. | |
| ' | Fire Emblem, ' | Unlocks extra content in Path of Radiance |
| Game Boy Player | The GBA can be used as the controller instead of the GameCube controller. | |
| Harry Potter and the Chamber of Secrets | Harry Potter and the Chamber of Secrets | Unlocks new content for the GBA version. |
| Harry Potter and the Prisoner of Azkaban | Unlocks new content. | |
| ' | Harry Potter: Quidditch World Cup | Allows the transfer of Quidditch cards between the games, play co-op. |
| ' | ' series | Unlocks new content. |
| ' | ' | Unlocks new content. |
| Hot Wheels Velocity X | Unlocks new content. | |
| ' | Used to help players for the GCN version, and for co-op mode. | |
| Korokke! Ban-Ō no Kiki o Sukue | Korokke! 3: Guranyū Ōkoku no Nazo | Unlocks Burger on the GBA game. |
| Kururin Squash! | Used to play unlockable minigames. | |
| ' | The GBA can be used as the controller instead of the GameCube controller for single player. Also enables optional multiplayer cooperative play with up to four players, but a separate GBA and cable is required for each player. | |
| ' | Enables optional two-player cooperative play. | |
| ' | Unlocks new content. | |
| Madden NFL 2003 | Used as an interactive scoreboard. | |
| Madden NFL 2004 | Allows players to use Madden Cards in the GameCube version. The GBA link option is absent in European GameCube version because the GBA version was not released in Europe. | |
| ' | ' | Unlocks new content and transfers game progress. |
| Mario Kart Double Dash Bonus Disc | Fire Emblem | Unlocks exclusive items that can only be obtained from the bonus disc. Also unlocks the soundtracks 99 & 100. The GBA link option is absent in the European version of Fire Emblem, since the Bonus Disc was not released in Europe. |
| Medabots Infinity | Medabots series | Unlocks two secret characters. |
| ' | ' | Map of the current level shows on the Game Boy Advance. |
| ' | Used as second screen. | |
| Metroid Prime | Metroid Fusion | Unlock content for Prime, including a Fusion Suit costume and an emulation of Metroid on NES. |
| ' | Mr. Driller Ace | Allows the player to transfer their Pacteria digital pets into the game. |
| NASCAR Thunder 2003 | Manage data on the player's car. | |
| Nintendo GameCube Preview Disc | Used to play downloadable demos of ' & Dr. Mario | |
| Nintendo Puzzle Collection | Used as a controller. Can also be used to download the NES versions of Dr. Mario and Yoshi's Cookie along with a GBA port of Panel de Pon | |
| Pac-Man Vs. | GBA required to play. Three players play as the ghosts hunting down Pac-Man, with normal controllers looking at the TV screen; the fourth player controls Pac-Man on the GBA and can see the whole map. Only when the player is Pac-Man can they score points. | |
| Phantasy Star Online Episode I & II series | Used to play minigames based on Puyo Puyo and Nights into Dreams. Also includes a special version of the Tiny Chao Garden, which players can use to import a Tails Chao into Sonic Adventure DX or '. | |
| ' | Pokémon series | Allows transfer of Pokémon between the games. The Adventure mode is only possible when linked to Pokémon Ruby or Pokémon Sapphire, which makes it possible to play these handheld games on full screen using the GameCube controller. |
| Pokémon Channel | Pokémon series | Using special e-Reader cards, players can have special line art to color in. In European and Australian versions of the game, players could also unlock a downloadable Jirachi to put into Pokemon Ruby or Sapphire. This downloadable Jirachi also patched the "Berry Glitch" present in these games. |
| Pokémon Colosseum | Pokémon series | Allows transfer of Pokémon between the games, and battles can be held in Colosseum using the GBA to issue orders. |
| ' | Pokémon series | Allows transfer of Pokémon between the games, and battles can be held in XD using the GBA to issue orders. |
| ' | ' | Unlocks new content and transfers game progress. |
| Rayman 3 | Allows the use of multiplayer in certain mini games. With GBA version, unlocks extra mini games. | |
| ' | ' | Unlocks new content. Uses the GBA as a controller. |
| ' | Unlocks new content and transfers game progress. | |
| Sonic Adventure 2: Battle | Transfers Chao to the Tiny Chao Garden. With GBA games, allows user to save the Chao to the GBA's Tiny Chao Garden. | |
| Sonic Adventure DX: Director's Cut | Transfers Chao to the Tiny Chao Garden. With GBA games, allows user to save the Chao to the GBA's Tiny Chao Garden. | |
| SSX 3 | SSX 3 | Transfers cash between GBA and GCN versions. |
| ' | The GBA screen/controls can be used to issue wingman orders privately on Versus mode. | |
| Tiger Woods PGA Tour 2004 | Unlocks new content. | |
| Tom Clancy's Splinter Cell | GBA can be used as a mini map/radar for GCN version. With GBA version, unlocks extra levels for the GBA. | |
| ' | GBA can be used as a mini map/radar for GCN version. With GBA version, unlocks extra levels for the GBA. | |
| ' | GBA can be used as a mini map/radar. | |
| Wario World | Sends demos of ' to the GBA. | |
| The GBA can be used as the controller instead of the GameCube controller. |