Volumes have been stated on this topic, and the disquiet and feuds about where the "hot" video slots are installed in the casino are still bubbling – over sixty yrs after slots were first placed in casinos.
The standard rule is that the most favorable slot machine games were put just inside the main entrance of the casino; so that everyone walking by would be able to see real jackpot winners and be attracted to come into the casino … play. Our theorem is that this is definitely no longer so.
Practically all of the mega casinos today are colossal complexes and you no longer can see inside from the sidewalk, so there’s no longer a reason to situate the ‘loose’ slot games close-by any of the doors.
Yet another traditional rule is that loose slot games are put on the major aisles inside the casinos, again so that more potential gamblers could see winning jackpots and be roused to play. Importantly though, 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 philosophy about where to place the loose slots.