So this has actually been possible for a few days now, but I wanted to bring awareness to this fact because there are some caveats to making it work. Sorry folks, the official GameCube controller adapter from Nintendo does not work with Switch, and it’s possible it may never work. However, there is a cheap solution that is supported thanks to the recent 3.0 update to Nintendo Switch’s OS.
The MayFlash Gamecube adapter for Wii U costs around $15 and once updated via PC to support Pokken Tournament (and conversely, your Switch is updated to version 3.0), it simply plugs in via USB… and just works. No strings attached. It actually reads the controller like it’s a wired Switch Pro Controller. Obviously you use the home button feature, but if you’re thinking about using a GameCube controller with Switch, that was probably something you were more than willing to sacrifice.
Don’t believe me? Here, see it in action:
Obviously some may not understand why this matters, but to man, the GameCube controller is the greatest controller ever created. Fast forward three full generations of hardware since it’s release… and it’s still getting some support, even if it takes a third party addon. You can buy a MayFlash Gamecube adapter right here.