Volumes have been stated on this matter, and the bickering and arguments about where the "hot" slot machine games are positioned in the casino are still raging – over 60 yrs after slot machines were first placed in casinos.
The classic rule is that the best slots were installed just inside the main entrance of the casino; so that people passing by would be able to see jackpot winners and be possessed to come inside and play. Our sneaking suspicion is that this is definitely no longer the case.
Most of the major casinos presently are enormous complexes … you can no longer see inside from the sidewalk, so there is no longer a reason to position the ‘loose’ one armed bandits in close proximity to any entrances.
Yet another traditional rule is that loose slot games are installed on the major aisles inside the casinos, again so that more people could see winning jackpots and be inspired to play. Importantly 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 slots 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 philosophy about where to place the loose slot machine games.