Very cool. I evolved a goblin face from the "honeycomb monster" on the front page. I wish you could play with the rotation manually rather than having to rely on the gif animation.

You can control the rotation with your arrow keys. Does that accomplish what you want? We need to make that more obvious. Thanks for the feedback!

Oh, I see. The rotation control is kind of strange. Rather than have it control the momentum of the spin, it would be more natural to have the left/right arrows first stop the automatic rotation, then simply rotate at fixed-size intervals.

Play/pause/left/right buttons may work even better.