Volumes have been written on this subject, and the contention and squabbling about where the "hot" slot games are located in the casino are still passionate – over 60 yrs after the slot machines were first added to the gaming floor in casinos.
The standard rule is that the superior slot machines were installed just inside the main entryway of the casino; so that persons walking by would see jackpot winners and be possessed to come inside and play. Our assurance is that this is definitely no longer true.
The majority of the major casinos nowadays are titanic complexes … it is not possible to see inside from the sidewalk, so there’s no longer a reason to position the ‘loose’ one armed bandits close to any entrances.
Another traditional rule is that loose slot games are installed on the major aisles in the casinos, again so that more potential gamblers could see winning jackpots and be galvanized to play. Notably however, 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 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 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!
Nowadays, casinos are constantly changing their perspective about where to place the loose slot machines.