Hahahaha!
I watched Big again a year or two ago and every time I've seen it throughout my life I've wondered "Is that a real game he's playing?". Last time I watched I did some research and found that it wasn't an actual game.. I was kinda bummed. Seems like a lot of bad reviews from people who have never seen the movie so.. they don't get the joke. Just wanted to let you know that it cracked me up.