Game progress: my game is coming along very well! I have Coney Island, Bright Lights, Broadway '51, and United Zingo reasonably finished.
Now, I am working on United's Leader and Bally's Spot-Lite.
My code, to this point, has been released at https://github.com/bingopodcast/bingos
I'll be keeping this updated as I add each new game.
Today's game is 1964's Bally 2-in-1. Very fun looking game where you have to get a hand to 21, then hold. The trouble comes in that next ball, you will get a hit unless you hit a particular rebound switch off the skill shot.
View the machine at http://ipdb.org/machine.cgi?id=2698