Quoted from HighProtein:
That Scooby Doo blanket they put over a game was hilarious. Nice work. I agree with the comments above, they've done a helluva job keeping it secret.
I am going to guess it's an original theme, not a license. I hope it's something Edgar Allen Poe-ish, scary & gothic. Heck, the Raven & the Tell-Tale Heart would be enough to give a theme life of its own!
Great to see you're enjoying Pinside! Did you know Pinside is able to run thanks to donations from our visitors? Please donate to Pinside, support the site and get anext to your username to show for it! Donate to Pinside