Volley is a web game based on the Atari arcade game Rebound, which was a gravity-based modification of their seminal game, Pong. It’s been tested to work on the latest versions of Chrome, Firefox, and Safari, as well as iOS and some Android devices. At some point I’m hoping to get around to adding basic networked multiplayer support to it.
Here’s the game if you want to try it out, and here’s the Mercurial source repository. Click here if you want the full-screen game.