What is this?

A tool for practicing inputting angles on a control stick based on ingame visuals.

This is particularly important for many special attacks in Super Smash Bros, such as Fox and Pikachu's Up-B.

You need to use a gamepad. A gamecube controller may be used if it is setup as a generic gamepad.

As of October 2015 only Chrome, Firefox, Opera and Edge support the Gamepad web api.

Is my controller working?

Looking for controller...

Press a button (or start) for the controller to register. You may need to plug the USB out and in.

With a 4-port adaptor (using VJoy) you may need to stop and start the drivers, and if the sticks don't register on Chrome try Firefox.