Books have been set forth on this item, and the conflict and feuds about where the "hot" slot machines are placed in a casino are still taking place – more than 60 years after slots were 1st added to the gaming floor in the casinos.
The traditional rule is that the most favorable slot machine games were placed just inside the main doorway of the casino; so that people going by would see real jackpot winners … be mesmerized enough to come unto the gaming floor and play. Our interpretation is that this is definitely no longer the case.
Practically all of the big name casinos nowadays are jumbo complexes and now you can’t see inside from the sidewalk, so there is no longer a reason to put the ‘loose’ slot machine games close-by any of the doors.
An additional classic rule is that loose one armed bandits are put on the major aisles inside the casinos, again so that more potential gamblers could see winning jackpots and be energized to play. Importantly however, 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 the 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!
These days, casinos are constantly changing their perspective about where to place the loose one armed bandits.