Broken how? If the game is not working at, it might have not download correctly. I'd recommend to clear cache or force a hard reload (in Windows it's done with Ctrl+Shift+R).
Does that happen at some point in particular or before it starts? Also, does it happen as well with the Mage Apprentice? (both are made with the same engine)
I'm afraid it might be an issue related to some compatibility with your device/browser. I'd recommend trying the game on a different web browser if possible.
