Bally EM's are the game they are, they cannot be changed. I have several Bally EM's, as well as an E1000. The newer machines are able to have their games changed out, it's just a matter of reel strips, some glass, maybe a topper, and the ROM's. That said, Bally EM's, while similar to EM pins inside, are a whole different world. I've been working on them for a couple years now and still learn new things about them all the time. Parts aren't impossible to come by, though some take searching for now. The Bally's seem to be gaining collectibility now as well. Also be aware of gaming laws in your state, some do not allow private ownership, others stipulate the machine must be of a certain age ie. 25 years old.

That being said, usually only the gaming/revenue division knows this, sometimes not even then. If your friends are cool and you don't go taking the neighborhood senior citizens retirement checks in quarters, no one usually cares lol.

For me the EM Bally's are my favorite. I have 3 right now lol. Everybody that sees them loves them. The new slots do nothing for me, they're all player track or TITO (Ticket In Ticket Out) now. You can't beat the feel of dropping in quarters (or nickels or dimes) and getting paid out in quarters IMO

That's some interesting information. Probably didn't help Bally out any that the E1000 series machines were not very reliable right out of the crate during the early 80's.