Was just going to post this. The game requires use of @-webkit-keyframes. As you can guess by the name of the deceleration, it's webkit only.

damn i hate those tags (being -moz or -webkit or any other, mind you)

such a way to break the way. need a different browser each time if the dev doesn't take the time to use every single tag there is (and its NOT the dev fault here)

What's a better way to introduce experimental (i.e. not yet standard) functionality?