Books have been written on this subject, and the disquiet and face-offs about where the "hot" video slots are located in a casino are still raging – 60 yrs after slot machine games were 1st installed in casinos.
The standard rule is that the superior slots were put just inside the entry of the casino; so that folks going by would be able to see jackpot winners and be inspired to come inside and play. Our leaning is that this is no longer true.
Practically all of the large casinos today are huge complexes … now you can’t see inside from the sidewalk, so there’s no longer a reason to position the ‘loose’ slot machine games near to any entrances.
Yet another standard rule is that loose slot machine games are installed on the major aisles inside the casinos, again so that more people could see winning jackpots and be encouraged to play. Importantly however, 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 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 perspective about where to place the loose slot machine games.