PonWebGL is a project mainly written in JavaScript, it's free.
A simple Pong-like game based on WebGL
Pon_{web}GL A very simple and small Pong-style game based on WebGL. I tested it with Firefox 4 and 5 and with Chrome 14dev.
Controls
| Action | Left player | Right player | |--------+-------------+--------------| | Up | =W= | =Up= | | Down | =S= | =Down= |