I have at last finished my first game on this blog just in time for Christmas.
Here then is the final release of Selection Task
In general I'm pretty happy with it; think it is a cute distraction for a few minutes and demonstrates the power of the CSS really well.
It also turned out to be an interesting programming project: It required essentially no tools (text editor + SASS + firefox); it has no game loop or equivalent timer tick; it has no graphics resources; it has no hit testing or animation code.
The final source code is here; fork it, mod it, or just use it if you wish.