There seems to be an issue with webGL and Chrome; Chrome worked for awhile for me, but eventually it just stopped letting me load the game altogether and I had to switch to a different browser to be able to load the game. I'm not the only person I know who has had this issue.
This should be fixed now, can you confirm and send us any details if this has been resolved?
https://animationthrowdown.zendesk.com/hc/en-us/requests/new
 "Animation Throwdown"){kind=icon}
 "Ball Game - Physics!"){kind=icon}
This should be fixed now, can you confirm and send us any details if this has been resolved? https://animationthrowdown.zendesk.com/hc/en-us/requests/new