Books have been said on this issue, and the disquiet and disharmony about where the "hot" slot games are positioned in the casino are still there – 60 years after one armed bandits were first placed in casinos.
The classic rule is that the more favourable slot machines were installed just inside the main entry of the casino; so that folks going by would be able to see jackpot winners … be enticed to come unto the gambling floor … play. Our belief is that this is definitely no longer the case.
Most of the major casinos nowadays are immense complexes and you no longer can see inside from the sidewalk, so there’s no longer a reason to have the ‘loose’ slot games close to any doors.
Yet another classic rule is that loose slots are put on the major aisles in the casinos, again so that more potential players could see winning jackpots and be encouraged to play. Notably however, 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 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 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 perspective about where to place the loose slot machine games.