For this one, we’ll be using Joystick Mapper from the Mac App Store. 3rd-party ones should still work, but we’ll be using official Nintendo controllers for this one. The Nintendo Switch controllers are compatible with the Mac because they use Bluetooth to connect wirelessly to the Switch console.
If you game on a Mac (not common, but we do exist), there are some games where you might prefer to use a controller over the keyboard and mouse. I’ve added directions for this in that section. If you use an app like JoyStick Mapper or an equivalent app, you may need to grant Accessibility Permissions in order for the app to work with your controller.
UPDATE – February 1, 2021: Thanks to the commenter “ ChrisW” on the YouTube video for pointing this out.