Volumes have been stated on this subject, and the conflict and discord about where the "hot" one armed bandits are located in the casino are still bubbling – sixty years after the slot machines were first added to the gaming floor in casinos.
The classic rule is that the superior slot games were positioned just inside the main entryway of the casino; so that potential gamblers going by would be able to see real jackpot winners and be challenged to come unto the gambling floor and play. Our reckoning is that this is definitely no longer true.
Many of the mega casinos presently are colossal complexes and you no longer can see inside from the sidewalk, so there is no longer a reason to put the ‘loose’ slot games close-by any doorways.
Another standard rule is that loose slot machine games are placed on the major aisles inside the casinos, again so that more people could see winning jackpots and be roused to play. Interestingly though, 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!
Today, casinos are constantly changing their philosophy about where to place the loose slot machines.