Books have been stated on this matter, and the contention and squabbling about where the "hot" slot machines are installed in the casino are still ongoing – sixty yrs after the slot machines were first placed in casinos.
The standard rule is that the very best slots were installed just inside the main door of the casino; so that people walking by would be able to see actual jackpot winners … be captivated to come unto the gambling floor and play. Our opinion is that this is definitely no longer true.
Most of the mega casinos these days are herculean complexes and now you can’t see inside from the sidewalk, so there’s no longer a reason to position the ‘loose’ slot machines near to any doorways.
Yet another standard rule is that loose slot games are installed on the major aisles inside the casinos, again so that more fun seekers 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 the slot machines 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!
Nowadays, casinos are constantly changing their perspective about where to place the loose slots.
