Books have been set forth on this matter, and the disquiet and feuds about where the "hot" one armed bandits are installed in a casino are still rampant – over sixty years after the slot machines were first installed in casinos.
The traditional rule is that the superior one armed bandits were placed just inside the main entry of the casino; so that everyone going by would be able to see actual jackpot winners and be challenged to come unto the gaming floor and play. Our point of view is that this is definitely no longer the case.
Nearly all of the large casinos nowadays are titanic complexes and you can no longer see inside from the sidewalk, so there is no longer a reason to put the ‘loose’ slot machine games close to any doors.
An additional traditional rule is that loose slot machine games are positioned on the major aisles in the casinos, again so that more fun seekers could see winning jackpots and be influenced to play. Nonetheless, we find that this also isn’t 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 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 perspective about where to place the loose slot games.