Books have been said on this subject, and the controversy and disagreement about where the "hot" video slots are installed in a casino are still raging – sixty yrs after slot machine games were first placed in gambling houses.
The traditional rule is that the superior one armed bandits were located just inside the main doorway of the casino; so that fun seekers walking by would be able to see jackpot winners … be infatuated enough to come into the casino … play. Our thought is that this is definitely no longer the case.
Practically all of the mega casinos presently are super-colossal complexes … you can no longer see inside from the sidewalk, so there is no longer a reason to situate the ‘loose’ slot games near to any exits.
An additional traditional rule is that loose slot machines are placed on the major aisles inside the casinos, again so that more folks could see winning jackpots and be galvanized to play. Notably however, 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 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 one armed bandits.