Guest post by Mozilla Labs usability researcher Jono Xia who has built a cool HTML5 experimentation of his very own

Hey, Game On 2010 contest participants — how are those HTML 5 games coming along? I can’t wait for January 2010 when I can finally see what you’ve made.

I’ve been doing some HTML 5 experimentation of my own. What I’m working on is not a game, but it is a graphical HTML 5 web app that uses several tricks that may be of interest to game developers. It’s easier to show it in action than to tell you about it, so watch this video for a preview of Pencilbox and an explanation of how it works.

Note: this is not a Mozilla project — this is a personal project I’ve been hacking on in my free time.

I’m not yet ready to put the app itself on a public webserver where you can play with it, nor have I set up a public code repository yet. (Like I said, it’s a side project, so I haven’t had time to work on the infrastructure stuff.) When I do have it set up properly, I’ll let you know. In the meantime, here’s a tarball of the source code, which is under a Mozilla tri-license. It may be of some interest if you wish to achieve a similar effect in your Game On 2010 submission and you want to see how I did it.

Happy hacking!