Volumes have been said on this matter, and the conflict and face-offs about where the "hot" one armed bandits are located in the casino are still bubbling – more than sixty years after slot machines were first added to the gaming floor in casinos.
The standard rule is that the more favourable slot games were put just inside the main entrance of the casino; so that people walking by would see actual jackpot winners and be drawn to come into the casino … play. Our theorem is that this is definitely no longer true.
Nearly all of the large casinos nowadays are giant complexes … it’s no longer possible to see inside from the sidewalk, so there is no longer a reason to have the ‘loose’ slots near to any doorways.
An additional classic rule is that loose slot machine games are positioned on the major aisles inside the casinos, again so that more fun seekers could see winning jackpots and be motivated to play. Interestingly though, we find that this also isn’t 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 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!
Nowadays, casinos are constantly changing their philosophy about where to place the loose slot machines.