Volumes have been stated on this subject, and the debates and disagreement about where the "hot" slots are located in the casino are still there – over sixty years after the slots were 1st added to the gaming floor in casinos.
The classic rule is that the more favourable slot games were placed just inside the main foyer of the casino; so that potential players going by would see real jackpot winners and be enthralled to come inside and play. Our sentiment is that this is definitely no longer true.
The great majority of the major casinos these days are colossal complexes … you no longer can see inside from the sidewalk, so there’s no longer a reason to place the ‘loose’ slot machine games close to any exits.
Yet another classic rule is that loose one armed bandits are located on the major aisles inside the casinos, again so that more potential gamblers could see winning jackpots and be inspired to play. Notably though, 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 slot games 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.