You know, I also thought about this idea too, with great interest. I am not sure if I want to dissuade anyone from doing this for my own personal, selfish reasons (I want the 80s back!!! oh...sorry). However, I'd like to give some practical advice that may be heeded or discarded to anyone seriously considering it, for whatever its worth...
To those of you who have thought of a "pay-per-game" model, here's another angle to look at this situation: plain and simple, 25 cents isn't what it used to be worth. According to the Consumer Price Index, inflation in the U.S. averages somewhere between 3-4% per year. It doesn't take a math whiz to realize 25 cents basically amounts to nothing these days. However, these old games play exactly the same length of time, on average, as they used to back in the 80s (e.g. the average Asteroids game lasts 2.8 minutes, or whatever). So, demand issues aside, arcade operators are getting increasingly LESS value from their games with each passing year. Over a 25+ year span, that really adds up! Of course, you could always ask for more money per game, but nobody remembers putting in a dollar to play Pac-Man, and few probably would. In fact the whole quarter-per-game idea is part of the nostalgia to begin with!
So it appears the highest value proposition with arcades is the "pay-per-visit" model, which of course is unfortunate since it ruins some of the nostalgia AND is probably not going to net the operator as much income on these merits alone. So this would almost certainly necessitate being augmented by another source of revenue, such as food-and-drink. Someone brought up the idea of the 50s diner concept and then shot it down, but actually the way I see it there IS value in the model if you look at it the right way. What if, for example, you franchised the 80s with a restaurant that featured 80s music, movie posters, old-school MTV on the 25" tube, and guaranteed at least five standup arcade games on free play, just to attract visitors? I'd think that idea alone would allow the operation to compete fairly well against other family-oriented restaurants. Toss in a free meal offer to anyone who can beat the local high score on any of the games? Host local tournaments as well to generate occasional surges in demand? Maybe its farfetched, but then maybe somewhere in there is an idea...
"Food" for thought.
Shoegazer