Volumes have been written on this matter, and the disquiet and feuds about where the "hot" slot machines are positioned in the casino are still raging – more than sixty yrs after the slots were first placed in gambling houses.
The traditional rule is that the most favorable slot machine games were put just inside the entry of the casino; so that casino fanatics walking by would see jackpot winners … be keen enough to come into the casino … play. Our leaning is that this is no longer true.
Practically all of the mega casinos these days are titanic complexes … it is not possible to see inside from the sidewalk, so there is no longer a reason to have the ‘loose’ slots near to any entrances or exits.
Yet another standard rule is that loose slots are put on the major aisles in the casinos, again so that more fun seekers could see winning jackpots and be roused to play. However, we find that this also isn’t a universal rule any more.
What casinos found over the years is that people walking down the busy aisles were frequently on the way to somewhere else. If they played one armed bandits at all, they would simply put in their loose change because they happened to be walking by. Win or lose, they would very often not stop to keep playing. And the last thing a casino wants is for someone to win a jackpot by playing only a few coins and then not stay to put it all back in!
Nowadays, casinos are constantly changing their philosophy about where to place the loose slot games.