Volumes have been written on this subject, and the conflict and discussion about where the "hot" slots are positioned in the casino are still rampant – over sixty yrs after one armed bandits were 1st installed in casinos.
The quintessential rule is that the most favorable slot machine games were installed just inside the entrance of the casino; so that individuals walking by would be able to see real jackpot winners … be mesmerized enough to come unto the gaming floor … play. Our theorem is that this is no longer the case.
The majority of the mega casinos nowadays are colossal complexes and it’s no longer possible to see inside from the sidewalk, so there’s no longer a reason to have the ‘loose’ slots near any entrances.
Another standard rule is that loose slot machines are placed on the major aisles in the casinos, again so that more folks could see winning jackpots and be motivated to play. 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 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 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!
In recent times, casinos are constantly changing their philosophy about where to place the loose slot games.