Volumes have been stated on this issue, and the controversy and squabbling about where the "hot" slot games are placed in a casino are still intense – more than 60 years after slot games were first placed in the casinos.
The classic rule is that the better slot machine games were positioned just inside the main entrance of the casino; so that casino fanatics walking by would be able to see actual jackpot winners and be attracted to come into the casino and play. Our resolution is that this is definitely no longer so.
Almost all of the big name casinos today are monstrous complexes and you no longer can see inside from the sidewalk, so there’s no longer a reason to position the ‘loose’ slot machines near any doors.
Yet another traditional rule is that loose slot machines are installed on the major aisles inside the casinos, again so that more potential players could see winning jackpots and be roused to play. Interestingly though, we find that this also is not 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 slot games 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!
In recent times, casinos are constantly changing their philosophy about where to place the loose slots.