The video on the next page shows a pretty mean feat of coding. Developer Brandon Jones has taken files from the iOS version of id's Rage game, which came out for iOS a little while ago, and tweaked them to display in WebGL, a library for Javascript that can generate 3D graphics in a compatible web browser. In other words, Jones ported (some elements of) Rage for iOS to the browser.
He even had John Carmack's help, getting a few hints on exactly how the file format worked and how to get it together. Understandably, Carmack also asked him not to post the art files on a public webserver, so though the source code is available for developers, unfortunately the demo isn't actually live for players to try out.
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