Volumes have been written on this topic, and the bickering and face-offs about where the "hot" slot games are installed in the casino are still intense – 60 years after the slots were 1st placed in gambling houses.
The quintessential rule is that the best slot games were placed just inside the main entrance of the casino; so that individuals walking by would be able to see jackpot winners … be drawn to come unto the gaming floor … play. Our sentiment is that this is definitely no longer the case.
Most of the big name casinos presently are humongous complexes … you no longer can see inside from the sidewalk, so there’s no longer a reason to have the ‘loose’ slot machine games in close proximity to any of the doors.
An additional standard 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 galvanized to play. Nonetheless, 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!
Today, casinos are constantly changing their perspective about where to place the loose slot machines.