Volumes have been written on this subject, and the contention and face-offs about where the "hot" slot machine games are placed in the casino are still intense – over 60 years after slot machines were first placed in casinos.
The standard rule is that the best slot machine games were put just inside the main entrance of the casino; so that potential players walking by would be able to see jackpot winners and be convinced to come into the casino and play. Our philosophy is that this is definitely no longer the case.
Most of the big name casinos today are colossal complexes and it is not possible to see inside from the sidewalk, so there’s no longer a reason to put the ‘loose’ slot games in close proximity to any exits.
Yet another traditional rule is that loose slot machines are placed on the major aisles in the casinos, again so that more potential players could see winning jackpots and be galvanized to play. Notably 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 one armed bandits 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.