For most slot machines, there is a predetermined percentage of bets given back to the players in the form of winnings. The majority of the slot machines have a fixed amount of winnings, around 95%-98% of the total bet amount. The exception is in the form of progressive slots, wherein a set amount of the bet is added to the “pot” and consequently adds up to the jackpot value. Progressive jackpots, in general, pay less and at a lesser frequency than slots with fixed jackpots. It needs to set aside a part of the bet to add to the growing jackpot prize. The chances of winning are very low, no matter how big the pot money is.