GameCube – Game Boy Advance link cable
From Nookipedia, the Animal Crossing wiki
The Nintendo GameCube Game Boy Advance Cable is a cable manufactured by Nintendo that allows connection between the Nintendo GameCube and Game Boy Advance. It is used in Animal Crossing to allow access to the island. The player can also play NES games on the GBA with it. With the cable, the player can also get designs for free, and design patterns at their house.
Trivia
- Villagers, especially peppy villagers, may sometimes mention the cable and its function, and will tell the player that they wish they had one. This causes them to break the fourth wall.