Had a blast at my first trip to PAPA this weekend. Seems like they must have about 75% of all solid state games produced in the house, which is incredible. So many curiosities you never see, like Varkon, Joust, Motor Show, Orbitor 1. Which got me thinking: what are the top SS games PAPA does not have, that would be cool to see in the collection? Off the top of my head, some candidates, based on gameplay/historical import/novelty, and excluding games with less than 10 produced. Since this was my first time there, I have no idea how often the machines rotate in and out.

Big Bang Bar
Defender
Hercules
Radical!
Mystery Castle

Didn't see it there for PAPA, guess it was sold/out for repair...

What Blackbeard said - also, they definitely had a Game Show. As far as any EMs, of course they don't have most.

Yes. Or should I say Meow

I think GL and Millionaire might have been the only Sys11s missing, which is pretty incredible.