As someone who makes the occasional simple JS game prototypes (I don't have ideas for "actual games" but I love to dabble) my first [0] thought was how sexy this could be as a UI for a web game, without the publishing step, just using it. Might be useful for other things, too (anything that already requires WebGL for example).

[0] I lied, that was the second, the first thing I felt was a mixture of being jealous of what you got there, and being proud someone pulled it off! Kudos.