Can math actually beat slot machines? (Interesting case I came across)

maronza1 · Apr 14, 2026

I came across a video about a group that reportedly made money by analyzing slot machine behavior instead of just playing randomly.

From what I understood, they didn’t hack anything or tamper with machines. They collected data from spins, analyzed timing, and tried to identify patterns in the RNG to improve their chances. Apparently this only worked on certain older machines with weaker systems, and not modern ones.

I’m not saying this is something that works today, but it raised an interesting question for me.

In poker we always talk about edge vs variance. These guys, if the story is accurate, were basically trying to turn a pure luck game into something slightly +EV through analysis.

So I’m curious what you think:

Do you believe situations like this were actually possible in the past?
How confident are you that modern slot RNGs are completely unpredictable?
Do you think there are still small edges in casino games that most players overlook?

Would be interesting to hear different perspectives.

Colbefc · Apr 14, 2026

I used to work in a pub and they had a slot machine which I watched people playing all
day and I got to know when it was going to pay out. I made money on it every week, not a
fortune but a nice bonus, until I went into work one day and the machine had been changed

najisami · Apr 14, 2026

maronza1 said:
Do you believe situations like this were actually possible in the past?

How confident are you that modern slot RNGs are completely unpredictable?

Ofc they were possible. There are slots professionals who watch those machines for hours, even days, till they know that enough money has been poured in them to start paying. Just like Colbe said above.
But nowadays, technology got so "smart" that it's becoming harder and harder for humans to beat it.

Rost · Apr 15, 2026

I think in the past, a lot of things were possible. Now, given today's technology, the security measures that casinos use, it's almost impossible to make money on gambling. As for "almost", in my opinion, there are games, poker or blackjack where a fairly experienced player can in principle make a profit, but I don't think they would be allowed to make such a profit regularly.

dreamer13 · Apr 15, 2026

It depends on what you mean. For example, in games like craps and roulette, there's no advantage, no matter how complex your algorithm. An advantage can only be achieved if the dice in craps or the wheel in roulette don't behave like a true random number generator.Martingale systems are an example of a gambler's fallacy, which assumes you must win within a certain number of events. However, casinos have maximum bets that you can reach very quickly. Ultimately, you risk large sums of money to win small amounts, which is generally not a good strategy when the odds are fixed.

CNXRegie · Apr 15, 2026

I believe slot machines are based on probabilities so I think it's still math. Study probabilities and math and beat slot machines.

maronza1 · Apr 15, 2026

najisami said:
Ofc they were possible. There are slots professionals who watch those machines for hours, even days, till they know that enough money has been poured in them to start paying. Just like Colbe said above.
But nowadays, technology got so "smart" that it's becoming harder and harder for humans to beat it.

That’s interesting, but I’ve always wondered about that idea of machines “needing to fill up before paying.”

If the RNG is truly independent each spin, then past money shouldn’t matter.

Maybe what people were seeing was patterns in weaker systems rather than actual accumulation logic.

maronza1 · Apr 15, 2026

Rost said:
I think in the past, a lot of things were possible. Now, given today's technology, the security measures that casinos use, it's almost impossible to make money on gambling. As for "almost", in my opinion, there are games, poker or blackjack where a fairly experienced player can in principle make a profit, but I don't think they would be allowed to make such a profit regularly.

I agree with you on slots and most casino games, it’s extremely hard to have any edge today.

But with poker, isn’t it different since you’re playing against other players rather than the house? That’s the one game where skill can consistently matter over time.

Blackjack is interesting too, but I’ve heard casinos can limit or ban players if they suspect advantage play.

maronza1 · Apr 15, 2026

dreamer13 said:
It depends on what you mean. For example, in games like craps and roulette, there's no advantage, no matter how complex your algorithm. An advantage can only be achieved if the dice in craps or the wheel in roulette don't behave like a true random number generator.Martingale systems are an example of a gambler's fallacy, which assumes you must win within a certain number of events. However, casinos have maximum bets that you can reach very quickly. Ultimately, you risk large sums of money to win small amounts, which is generally not a good strategy when the odds are fixed.

That’s a really good explanation, especially on the gambler’s fallacy and fixed odds.
I think this ties back to the earlier point about older machines. Any “edge” people thought they had probably only existed when the system itself wasn’t truly random.
Once the randomness is solid, like you said, no betting system can overcome the built-in house edge.

steve01991 · Apr 15, 2026

slot machines are random, so no math can figure out when it will hit!

puzzlefish · Apr 15, 2026

Fun story: we recently had a promotion here on CardsChat where we got to play Pragmatic slots - Fortune of Olympus I think - to try and win some gift cards. The promotion was for playing on the Stake platform. I played these slots on Stake and then later I played the same slots on GG. They behaved completely differently. The payouts on Stake were ridiculously easy compared to that on GG.

I know the payout percentages for slots can be adjusted. I suspect that it's something that is adjusted on a player to player basis. I don't think it's something that a player can exploit by watching the slots, although it certainly brings the Casino Lurker episode to mind from Friends.

black and · Apr 15, 2026

We have all heard and read about the scandals of manipulation or fraud on the part of players. But it is obvious that all such "projects" are very short-term. The casino is very good at counting its money and if there is someone who comes up with a scheme, they will be identified and stopped very quickly.

TeUnit · Apr 15, 2026

A lot of things were possible in the past, they are very quick to catch any leaks in the system now.

bazza155 · Apr 16, 2026

If you check slots of about 30 years ago you will find hiding away in the front design a statement saying average pay-out 78% to 82%,.
They run on a a cycle of spins, for example say it a 1000 spin cycle at £1 a time £1000 in total it will pay-out appox £800 spread over the cycle, play it at the right time and you will win.

bazza155 · Apr 16, 2026

Colbefc said:
I used to work in a pub and they had a slot machine which I watched people playing all
day and I got to know when it was going to pay out. I made money on it every week, not a
fortune but a nice bonus, until I went into work one day and the machine had been changed

Had the same sort of experience, me and friend would use this sports club nearly every day, in the bar they had a £100 jackpot machine. It had a jackpot £100, a cash pot which built up and was nearly always £100 and a reserve pot which built up and when the cash pot was won refill it , by watching the cash and reserve pots build up we could guess roughly then it was due to pay out the cash pot. We got the cash pot (mainly) or jackpot out 30 times in a year.

bazza155 · Apr 16, 2026

najisami said:
Ofc they were possible. There are slots professionals who watch those machines for hours, even days, till they know that enough money has been poured in them to start paying. Just like Colbe said above.
But nowadays, technology got so "smart" that it's becoming harder and harder for humans to beat it.

These slot professionals are just working out the cycle, but as more people spotted parts of the cycle the companies added more wheels and use technology to make the cycle a lot lot lot longer.

pirateglenn · Apr 16, 2026

steve01991 said:
slot machines are random, so no math can figure out when it will hit!

This is 100% the truth.
Maths is myth - i have seen slots take an enormous amount and people have been itching to get on - only to dump their weekly wages or sometimes more.
Its not science - its blind luck. This is why they add the low and high volatility images on machines, its their get out.
But...when they pay...boy can they...😉

KrazyKoo · Apr 16, 2026

I have been testing strategy for the past 7 years in one site where I "pretend" to be recreational player who gets engaged to the site and wager heavy AFTER winning big but otherwise I rarely visit the site. That site gave me my biggest slot win ever - 659€!

jaymfc · Apr 16, 2026

Well, I wonder what would happen these days if AI played the slots. I wonder how long it would take to master it,
Or if that was possible, they can definitely recognize patterns, so who knows.
I am sure some people try that, but I have never heard of it, as I have in poker. hmmn

Lodestone · Apr 16, 2026

If they were beatable, casinos would get rid of them. There is a reason why many casinos are getting rid of the poker rooms in favor of more slot machines and it isn't because they're losing money on them...

Sunz of Beaches · Apr 17, 2026

No I don't really believe in that. people say this ans that but in the end only luck counts with those kind of machines imo.

pep12343 · Apr 17, 2026

I think that in the past it was quite possible to achieve this, but today, without any illegal activity, it must be impossible.
Over time, honesty has been relegated to the background, and if you give someone the slightest advantage, they will take advantage of it. The casino takes this into account and eliminates it completely whenever possible.

CDNMAN 42 · Apr 19, 2026

maronza1 said:
I came across a video about a group that reportedly made money by analyzing slot machine behavior instead of just playing randomly.

From what I understood, they didn’t hack anything or tamper with machines. They collected data from spins, analyzed timing, and tried to identify patterns in the RNG to improve their chances. Apparently this only worked on certain older machines with weaker systems, and not modern ones.

I’m not saying this is something that works today, but it raised an interesting question for me.

In poker we always talk about edge vs variance. These guys, if the story is accurate, were basically trying to turn a pure luck game into something slightly +EV through analysis.

So I’m curious what you think:

Do you believe situations like this were actually possible in the past?

How confident are you that modern slot RNGs are completely unpredictable?

Do you think there are still small edges in casino games that most players overlook?

Would be interesting to hear different perspectives.

I have spent a fair bit of time and $$$ over the past 20 years playing slots and I have for the most part enjoyed playing, however I don't believe that todays slots exhibit any discernible pattern...if it is determined by a Random Number Generator then the key word is Random. There are only two things a slot player controls that is 1. the decision to play and 2 the amount to bet. Recently I watched a video by a supposed designer of slot machines..his take was there is no way to win and win big at slots except with luck. He did suggest if one can find an old three wheel slot then play it and you likely can double your starting cash over time then take your cash to a modern machine and enjoy the entertainment. he also said that in most current slots the -Grand Prize or biggest win occurs 1 in 40,000 plays...Good Luck on being the 40,000th

maronza1 · Apr 19, 2026

CDNMAN 42 said:
I have spent a fair bit of time and $$$ over the past 20 years playing slots and I have for the most part enjoyed playing, however I don't believe that todays slots exhibit any discernible pattern...if it is determined by a Random Number Generator then the key word is Random. There are only two things a slot player controls that is 1. the decision to play and 2 the amount to bet. Recently I watched a video by a supposed designer of slot machines..his take was there is no way to win and win big at slots except with luck. He did suggest if one can find an old three wheel slot then play it and you likely can double your starting cash over time then take your cash to a modern machine and enjoy the entertainment. he also said that in most current slots the -Grand Prize or biggest win occurs 1 in 40,000 plays...Good Luck on being the 40,000th

Great points, especially the distinction between what a player actually controls: whether to play and how much to bet. I think a lot of people underestimate that bankroll management is the only real strategy most slot players have.

I also agree that modern slots probably don’t show any reliable pattern a player can exploit. If the RNG and payout design are solid, then long-term it comes down to variance and luck.

The comment about old three-reel machines is interesting too. Simpler mechanics may have created more opportunities than today’s highly optimized games.

And that “1 in 40,000” reminder is sobering. Chasing jackpots can make people forget just how rare the top prize really is. For most players, slots are entertainment first, not income.

Tero · Apr 19, 2026

I'll bet it could throw a few good punches

Can math actually beat slot machines? (Interesting case I came across)

maronza1

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Colbefc

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najisami

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Rost

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bazza155

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