Volumes have been stated on this issue, and the contention and interchanges about where the "hot" slot machine games are placed in the casino are still bubbling – over sixty years after one armed bandits were first placed in gambling houses.
The traditional rule is that the superior slot machine games were positioned just inside the main foyer of the casino; so that fun seekers passing by would see real jackpot winners and be baited to come unto the gaming floor and play. Our theory is that this is definitely no longer the case.
The majority of the big name casinos nowadays are oversized complexes … now you can’t see inside from the sidewalk, so there’s no longer a reason to have the ‘loose’ slot games close-by any entrances or exits.
Another traditional rule is that loose one armed bandits are placed on the major aisles inside the casinos, again so that more potential gamblers could see winning jackpots and be motivated to play. Importantly though, 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 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!
In recent times, casinos are constantly changing their perspective about where to place the loose slot games.