Volumes have been written on this subject, and the contention and discord about where the "hot" slot machines are located in a casino are still rampant – over sixty years after one armed bandits were first added to the gaming floor in the casinos.
The standard rule is that the very best slot games were installed just inside the main entryway of the casino; so that individuals going by would be able to see jackpot winners … be influenced to come unto the gambling floor … play. Our assessment is that this is no longer true.
Most of the major casinos presently are giant complexes and it is not possible to see inside from the sidewalk, so there is no longer a reason to situate the ‘loose’ slot machines in close proximity to any entrances.
An additional classic rule is that loose slot games are placed on the major aisles inside the casinos, again so that more fun seekers could see winning jackpots and be roused to play. Importantly though, 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 slot machine 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!
These days, casinos are constantly changing their perspective about where to place the loose slot games.