Yah, the original game is all in pure javascript written to the canvas. I have been poking around with making canvas apps and a few weeks ago I grabbed the source and spent a few hours reading through all of it. Good stuff. If the author wasn't in Poland (corporate doesn't have an office there) I would try to hire him.
It sounds like this is basically a Canvas to OpenGL translation layer.
Can only the Canvas object be leveraged when creating games/apps with this? Or could a "account creation" screen be created leveraging HTML elements like forms (I would assume not since its sounds like its executed outside of Safari, and the translation provided is from Canvas > OpenGL)