Volumes have been stated on this item, and the debates and arguments about where the "hot" slot machines are located in the casino are still ongoing – 60 yrs after one armed bandits were first placed in casinos.
The traditional rule is that the most favorable slot machine games were put just inside the door of the casino; so that fun seekers going by would be able to see jackpot winners and be convinced to come unto the gambling floor and play. Our sentiment is that this is definitely no longer true.
Most of the major casinos nowadays are super-colossal complexes … now you can’t see inside from the sidewalk, so there is no longer a reason to have the ‘loose’ slot machine games in close proximity to any entrances or exits.
An additional standard rule is that loose slot games are put on the major aisles in the casinos, again so that more folks could see winning jackpots and be energized to play. Importantly 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 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.