Volumes have been written on this matter, and the debates and discourse about where the "hot" slot machine games are installed in a casino are still passionate – 60 yrs after slots were first placed in gambling dens.
The quintessential rule is that the best slot machines were put just inside the main entryway of the casino; so that people walking by would be able to see actual jackpot winners and be convinced to come inside … play. Our assessment is that this is definitely no longer the case.
Practically all of the mega casinos nowadays are humongous complexes and you no longer can see inside from the sidewalk, so there’s no longer a reason to position the ‘loose’ slot machines near any exits.
Another classic rule is that loose one armed bandits are put on the major aisles inside the casinos, again so that more persons could see winning jackpots and be motivated to play. Notably though, 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 slot games 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 machines.
