Volumes have been written on this item, and the controversy and squabbling about where the "hot" slots are installed in a casino are still there – over 60 years after the slot machines were 1st installed in gambling dens.
The classic rule is that the superior slot machines were placed just inside the entrance of the casino; so that everyone walking by would see actual jackpot winners … be challenged to come inside … play. Our philosophy is that this is definitely no longer the case.
The great majority of the mega casinos these days are titanic complexes and you no longer can see inside from the sidewalk, so there is no longer a reason to place the ‘loose’ slot machine games close-by any doorways.
Yet another classic rule is that loose slot machine games are located on the major aisles inside the casinos, again so that more potential gamblers could see winning jackpots and be motivated to play. Nonetheless, we find that this also is not 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 machine games.