Rushmoore Casino

Random Number Generators

The Myth of the Hot and Cold Slot Machine and RNGs

Gambling is full of myths and false beliefs, and slot machines are no exception. Today we’ll discuss the myth of hot and cold slot machines and learn all about the random number generator that makes the spins and payouts random (we realize this information may annoy Grandma, who has her favorite “hot” machine, so do us a favor and don’t tell her the truth. Thanks.)

Ok, the hot slot machine theory states: “Any machine that hasn’t paid out in a while has an increased chance to hit.” While the cold slot machine myth says: “After a payout, a slot machine is less likely to pay.” In short, both schools of thought subscribe to “Each win or loss alters potential payouts in the future.”

At first glance, this seems like a reasonable assumption. If a slot machine has a 98% payout (meaning it only keeps 2% of all bets over time) then there’s definitely a certain amount / percentage of wins and losses.

It sounds logical but the hot and cold machine theory is a myth. Like roulette, craps and any other game of chance, past events have no effect on the future. A slot machine’s random number generator keeps all payouts random so you still have the same chance to win despite wins or losses in the past.

The random number generator is the computer program inside the slot machine designed to give a definite percentage of winning payouts while randomizing the combinations on the reels. This means a slot machine can give out whatever percentage the casino wishes (as long as it’s above the state minimum).

There are rumors of slot machines holding back payouts if the machines gives out payouts over its programmed percentage. However, this is unnecessary because there’s no need for the machine to hold back. Over time the machine will have whatever payout is programmed into its system. Besides, changing the RNG is expensive and time consuming.

So while slot machines don’t turn cold or hot based on previous payouts, there are friendly machines with a slightly higher win percentage programmed in. These are sometimes referred to as being “hot”. But we’d prefer to call them friendly, because the “hotness” of the machine is actually programmed in.

Casinos always have friendly machines to attract people. They’re usually in areas where other people can see players win. If you can see a casino’s slot machine near a bar or restaurant then it’s probably a good machine to play. Casinos want people to notice other people winning so you’ll play.

On the flip side, the cold and unfriendly machines are designed to be ignored (but still used). Slot machines near other games (like card games) tend to have worse payouts (usually the state minimum). Casinos don’t want games to interfere with each other.

Good luck, and we hope you find a hot, friendly machine with a big payout!