Books have been set forth on this issue, and the debates and disagreement about where the "hot" slot machine games are positioned in a casino are still intense – more than 60 yrs after slot machine games were first installed in casinos.
The traditional rule is that the more favourable slot games were located just inside the entrance of the casino; so that folks going by would see jackpot winners and be intrigued enough to come into the casino and play. Our resolve is that this is definitely no longer the case.
The majority of the big name casinos nowadays are mammoth complexes and you no longer can see inside from the sidewalk, so there is no longer a reason to put the ‘loose’ slot machines close-by any entrances or exits.
Yet another traditional rule is that loose slot machines are put on the major aisles inside the casinos, again so that more potential gamblers could see winning jackpots and be inspired to play. Notably however, 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 the 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 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 perspective about where to place the loose slot machine games.