You can use many game pads to play the game.
Visit http://html5gamepad.com/ to see if your game pad configuration will work.
To set up a game pad, press any button. If you have not already configured a “mapping,” the Mist Parrots will assist you.
To manually force a re-mapping, you can do so from the Settings window.
The Game Pad Controls page explains what actions can be assigned to a game pad.