Just tried it. It's pretty cool. Unfortunately in 4th (or 5th level, not completely sure) it crashed with a javascript error.
In console got this:
An abnormal situation has occurred: the PlayerLoop internal function has been called recursively. Please contact Customer Support with a sample project so that we can reproduce the problem and troubleshoot it.
Maybe you have an idea, what's the problem. Looking forward to play the final game :-)