Very useful little device let me pair my Xbox one S controller to my switch, wirelessly and play Mario Odyssey and Celeste no problem. Works with PS4, PS3, Xbox 360 (wired), Wii U pro controller etc.
Far more cost effective than buying a Switch Pro controller which would only be used a handful of times
THIS seems to do the same thing more or less and is slightly cheaper. Both models should be available in other regions too
I imagine the game would need to have pro controller support. I'm pretty sure this method would make the controller pop up as a "USB controller" which would then function as a pro controller in game.
Currently reading: A Feast For Crows AND A Dance With Dragons