This game is not working correctly on my browser (FF33). I tried several times and waited until the end because nothing was happening... then tried with chromium and it did work :-/ (btw noscript is turned off)
FF33.1.1 (on Archlinux) is working fine here.
In addition to NoScript, you probably need to disable any extension that forbids cross-domain cookies as the relevant cookies are registered for https://ig-game.appspot.com/ and not a raw IP.
I wish they had the courtesy to put up a "Sorry, your browser is not supported" instead of having me answering everything and then finding out it doesn't work.