Not sure on the introduction screen, it might take a moment to load.
Not sure what the problem is. I tried it on my nexus 4 and got to like 35% and then something happens and just gray like you said. Maybe I didn't wake long enough though.
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Endless loop perhaps? You have a while condition that never completes or something along those lines?
Tom, Ashley sounds like it might be an issue with the highscores of the arcade, any thoughts ?
@zlesavich, orangemicro, vee41: Checking for errors in browser