This is a simple game of checkers.
The essential file is checkers.js. It can be included in any page with a canvas that has id='checkers' and dimensions of at least width=320 and height=350.
It uses the function roundedRect(...) in roundedRect.js, which is factored out because it is otherwise useful.
It also uses checker_click.wav for a sound effect.
The file checkers.php is a simple web page that includes the checkers game. It is identical to the one hosted at my website at:
www.cgmorton.com/holygophergames/checkers/
This code is licensed under the MIT License, as documented in LICENSE.txt .