GameJs is a JavaScript library for writing 2D games or other interactive graphic applications for the HTML Canvas http://gamejs.org.
Its API is modeled after the successful PyGame library http://pygame.org.
http://gamejs.org -- http://gamejs.org/docs/ -- http://gamejs.org/showcase/
See examples/skeleton/ directory for a minimal GameJs app.
Note that you need to run the examples via http:// (not file://) unless you use Firefox or Safari.
One trivial, cross-plattform solution to serve a directory with a web server is this executable: http://code.google.com/p/mongoose/.
Instead of using the gamejs-wrapped.js file you can also put all the GameJs files (everything below ./lib) into the JavaScript directory of your application. Your code should then transparently use those files.
Run GameJs unit tests, require RingoJs:
$ ringo test/all.js
Check the docs folder of your GameJs installation.
Example application can be found in the examples/ directory.
See the GameJs Website for more help or drop us an email in the Mailing List.