Click the green flag and turn up the volume! Move the mouse pointer side to side and up and down to control the keepon. Press the space bar to shift between three "twisting" modes: 1) left-right, 2) up-down, and 3) no twist. Press B to shift the backdrop.
This is a virtual version of the Keepon dancing robot, which was initially developed for therapeutic purposes and then turned into a commercial product. https://en.wikipedia.org/wiki/Keepon Music: Lose Yourself to Dance, Daft Punk (featuring Pharrell), from Random Access Memories, 2013