I spent the first minute clicking around with the mouse until the attempt upon the arrow keys and finaly after the spacebar the asteriod aspect kicked in and a sence ahaaaa.

I shall play some more later, though the blobing of the asteroids/blobs could perhaps also merge colour palletes as well and in that also provide some subliminal education. Maybe even volumetricaly factor in the colour merging.

I might also add that it can be more fun to learn how to play the game than just reading a manual, so in that I like it even more.

Oh and the source, that there is how I'll learn coffeescript, thank you.