Volumes have been said on this topic, and the contention and disharmony about where the "hot" slots are located in the casino are still intense – 60 yrs after slot games were first placed in casinos.
The traditional rule is that the very best slot machine games were positioned just inside the main doorway of the casino; so that fun seekers going by would be able to see real jackpot winners … be keen enough to come unto the gaming floor … play. Our slant is that this is not so anymore.
Most of the big name casinos presently are jumbo complexes … now you can’t see inside from the sidewalk, so there is no longer a reason to place the ‘loose’ slot machine games near any entrances.
An additional classic rule is that loose slot machine games are positioned on the major aisles inside the casinos, again so that more potential gamblers could see winning jackpots and be energized to play. Interestingly 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 the slot machines 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!
These days, casinos are constantly changing their perspective about where to place the loose one armed bandits.