The Differences between Loose and Tight Slot Machines A tight slot machine is one that keeps a high percentage of your money and doesn’t pay out a lot of money. A loose slot machine, on the other hand, pg slot is one that keeps a relatively small percentage of your money and pays out a lot in winnings. The idea behind learning how to find the loosest slot machines is that you’ll be more likely to win when playing these games at the casino. You’ll have an edge over the rest of the schmucks who are playing the tight slot machines.