turtles or simpsons for 4 player side scroller
nba jam te for sports 4 player
new game: those 4 player pac man sit downs always have people playing it at pinball jones.
25 cents a play. probably tough to make anything at this but that is the only way people put money in them imo. maybe work out a split with the location that you get all the quarters until the cost of the machine is met or something to make it a better investment for you
edit: with these 4 player games at 25 cents, if 4 people are playing you are getting a dollar in coin drop for like 5 min of action, if they play a few times (which it seems typically happens, you are getting a buck a play) people will drop quarters in the side scrollers a bunch at first but once you beat it, the replay is low. NBA jam (or any sports game) the game will be different every play so has more replay value long term. The pac man has super high replay value and repeat players