Volumes have been said on this issue, and the contention and arguments about where the "hot" slots are positioned in a casino are still on-going – sixty yrs after one armed bandits were 1st added to the gaming floor in gambling dens.
The traditional rule is that the very best one armed bandits were placed just inside the door of the casino; so that persons passing by would be able to see jackpot winners and be infatuated enough to come into the casino … play. Our theory is that this is definitely no longer the case.
Most of the mega casinos these days are gigantic complexes … it is not possible to see inside from the sidewalk, so there’s no longer a reason to have the ‘loose’ slot machines near to any doorways.
Yet another classic rule is that loose slots are installed on the major aisles inside the casinos, again so that more potential gamblers could see winning jackpots and be inspired to play. Nonetheless, we find that this also is no longer a universal rule.
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 slots 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 very 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!
In recent times, casinos are constantly changing their philosophy about where to place the loose slot games.