1. How Often Do Slots Pay Out
2. How Often Do Slots Pay Out Online
3. How Often Do Slots Pay Out Bonus
4. What Slot Machines Have The Best Payouts
5. Big Payouts On Slot Machines
6. How Often Do Slots Pay Out Money

No, the machine does not have a huge element table of over two billion elements. The random number generators choose each number once in the cycle using mathematical algorithms and do not need to keep track of which numbers were already chosen. Regarding the pause, it has nothing to do with how much it is going to pay. I think the game does some internal auditing from time to time. There is no such thing as hot and cold cycles with slot machines. The ups and downs are just normal random variation.

One of the most common ones is the belief that a casino can raise and lower a machine's payback with the flip of a switch. This is not true because the slot machines have a computer chip in them that determines the pay back percentage. These are set at the factory. In order for a casino to change the pay back, they would have to change the chip. All the slot machines in all the casinos now operate by utilizing the RNG, a microchip that generates numbers all the time, even when nobody plays the machine. These numbers are created at a rate of several billion hundreds of times per second! Be it a classic slot, a video slot, or perhaps a progressive slot, the generated numbers are what actually determines the position of the reels. It’s impossible to predict if a slot machine will pay out at a specific moment; anyone claiming otherwise either doesn’t understand how slot machines work or they work as a casino promoter. If it were possible to identify precisely when a slot machine is about to pay, then the casinos would lose money, and we are all aware of the fact that it usually doesn’t happen. As many slots players know, every game is programmed to pay back a certain percentage of bets made. For example, an online slots game that features 95% payback would typically deliver $0.95. Although you have no way of predicting when a progressive jackpot will happen the smaller the number of machines contributing to the jackpot the more often it is paid. Some local jackpots may be paid 2 or more times per week, or several times a month.

These are just random events. The laws of probability dictate that some days will be dry with a few big winners and others will have a lot of lower payouts. Most days will have a balanced mix and these days are always the first forgotten by the player. There is no switch the casino is throwing to alter the mood of their machines. I tend to think you're just remember what you want to in order to substantiate your theory.

No, this does not happen. How much the slot machine pays is determined by a microchip called an EPROM, which is generally left alone. To change it, at least in Nevada, the casino would have to get permission from the gaming authorities. Even without permission, they would have to open up each machine and change the EPROM by hand.
I speculate that the reason for what you observed about all the machines on a carousel getting hot at the same time is due partially to chance, partially selective memory, and partially to a snowball effect where players will gravitate to an area where they hear a lot of winning and simply add to the number of wins because of more players.

Your explanation of virtual versus physical slot machine reels was most informative.

1. Given the random number generator stops on a virtual Cherry say, how does the machine make the physical reel stop on a visible cherry? I mean technically speaking.
2. Does this explain how pachinko machines from Japan can electronically alter payout percentages without altering the physical reel symbols?
3. Suppose the machine decides its time for a BAR, the only BAR on the third reel, just as one passes the pay-line. Does it let the reel go one full turn and catch it on the next go-round?
4. Suppose a physical reel stops on a paying combination by mistake, i.e. a symbol other than the virtual one pre-ordained. What happens then?

Thanks much.

Let me answer each question individually.

1. It is just programming code that dictates to the machine that if the virtual reel stops on a cherry to make the actual reel stop on a cherry. There are actual notches on the reels which may help the machine to stop in the right place. If you peer through the glass at and angle you can sometimes see these notches. However, I am not an engineer and am not sure exactly how the machine knows to stop at just the right moment. It just take it for granted that it can.
2. Theoretically, the casino could change the payout on a slot machine with just a remote control. The remote control could tell the machine to use any previously programmed virtual reels. Practically speaking, the major casinos need to get approval from the gaming authorities to change the payback of a machine. If they did get such authorization all a slot technician has to do is replace a chip inside the machine, known as an e-prom. This happens infrequently and would not warrant the expense of a remote control.
3. It seems to me the reels spin at least several times before stopping.
4. In the unlikely even that happened, then I think it would trigger a malfunction and the bet would be voided.

I will say that for class 3 slots by major slot makers like IGT, Bally, and Williams do not resort to these sort of tricks. With respectable slot machines every play has the exact same probability of winning. If you don't believe me then why don’t you go from machine to machine playing each one for half an hour.

Not often. Contrary to popular myth the casinos don’t tighten the machines on weekends or whenever it is busy. Here in Las Vegas the casinos have to fill out a form every time they change the percentage on each game. Most slot managers I have spoken with have a policy on what coinage is set to what return. I tend to think the most likely reason to change the percentage would a change in ownership and/or management, which do not happen often.

No. Neither the amount you put in nor the denomination affects the odds. The same is true of slots.

From what I hear anything you can configure at the machine you can configure remotely through the server. This would include the theoretical return percentage. However most casinos report that changing the theoretical return of a slot machine necessitates a lot of paperwork.

Even if it were effortless to move the slot machine return up and down, it strikes me as a conspiracy theory to think the casinos would do that on a player by player basis. Living here in Vegas, I hear all kinds of theories about the lengths the casinos go to in order to win, like pumping in oxygen and playing a subsonic mantra that says 'lose lose lose.' These are just urban legends. Most casinos correctly believe that if you give the player a good experience and a fair gamble then he will keep coming back. As they say, you can only slaughter a sheep only once, but you can shear it many times. (My webmaster, Michael Bluejay, who is a vegetarian, tried to get me to use this analogy instead: 'You can seize all of a sheep’s money only once, but you can force it to take you bowling many times.')

I asked a source of mine who works at one of the casinos that utilize this technology. Besides the Treasure Island, this technology is also used at casinos in California, Michigan, and Mississippi. Here is what he said,

'Nothing can be changed if there are credits on the game. The slot machine will always reject any changes sent when there are credits on the meter. In Nevada, the machine also has to be idle for four minutes prior to and following any changes. It’s also not completely transparent to anyone standing in front of the slot machine. A black window pops up that says ’Remote Configuration In Progress’ (or something like that).

We mainly use ours to change the available denominations on our games. Similar to how table games will raise minimum bets on when the casino is busier, we will remove lower denominations on Friday morning and return them on Monday morning.'

So, rest assured, that the slot manager can not tighten up a game on you just because he doesn’t like you. As long as you have credit in the game, nothing can be changed.

If you are implying the casino is changing the odds of the game while you're sitting there playing it, then I would say that is just a myth. To change the odds of a game, the slot maker would have to open up the game and change the EPROM chip. With server based game, where this can be done remotely, regulations require that the game be unplayed for a certain number of minutes before any changes can made.

If you are implying that the casino sets a slot machine loose for the first so many days, to draw new players, and then switches the EPROM to a stingier one, then I would disagree as well. That could easily be done, and legally, but I doubt it is. In my slot machine survey I found that any given casino was fairly consistent in how loose or tight they set their slots.

For the benefit of other readers, the way slot machines have usually work is that a chip inside the machine, called an EPROM chip, determines how loose or stingy the machine is. The vast majority of slots today still function this way. Contrary to popular myth, slots don’t achieve their desired return percentage by paying more when the actual return is too low and less when it is too high. Rather, it is just subtle changes in the reel stripping on video slots and the virtual weights on stepper slots. It is usually up to the casino manager which chip to put in. Some jurisdictions leave that decision up to the state. A common myth about these slots is that the slot manager can flip a switch in his office and cause any slot machine, or all of them, to pay more or less. The truth is a slot technician has to open up the machine and physically change the EPROM chips.

However, with the new generation of 'server-based slots,' the myth has potential to be a reality. Slots on this system can indeed be controlled remotely. The slot manager is now able to change the theoretical return, pay tables in video poker, denomination, as well as the entire game, in the comfort of his own office. Here in Nevada there are safeguards to prevent abuse of this power. The Gaming Control Board has the following regulation:

'The conventional gaming device or client station must be in the idle mode with no errors or tilts, no play and no credits on the machine for at least 4 minutes. After this time, the conventional gaming device or client station must be disabled and rendered unplayable for at least 4 minutes. During the time the machine is disabled a message must be displayed on a video screen or other appropriate display device notifying the patron that the game configuration has been changed.' — Technical Standards for Gaming Devices and On-line Slot Systems 1.140

So the slot manager couldn't tighten up the game you’re playing just because he didn't like your polka-dotted hat. However, in theory, he could loosen or tighten every machine that wasn’t being played. To finally get at your question, would he loosen and tighten the slots like a yo-yo depending on the time of day or day of the week? On my forum, I argued that would be bad business, but many who submitted comments disagreed with me. To help argue my side, I asked Nick Dillon, Executive Vice President/Assistant General Manager at the Barona Casino in San Diego County about it. Here is what he wrote back.

'The concern with SBG (server-based games) is that the manufacturers and most casinos are looking at it mostly from a cost savings (less slot techs/labor needed to convert games, etc) perspective. At Barona, we really only want it if it proves a true value to the player. We have approximately 80 units on the floor that we began testing a couple of years ago. We are not yet at the point where we can say there is a true benefit to the player. We have tested many aspects of these games but have never raised/lowered the hold based on time of day, day of week, etc. We have, however, tested some other things. One is changing the minimum denom based on day of week (penny during the week moved to nickel on the weekend, for example). The idea being the same as table games whereby the denom (table minimum bet) moves higher when demand is peaking. This maximizes revenue. However, we found that was not the case with our test (likely because tables are limited and full capacity during the increase, but slots generally are not, and because a “penny” player can actually be a “dollar” player regardless of what min denom he is playing). We found more dismay from guests that were used to finding their preferred game/denom and that it was now changed. We also tested changing only the default denom from penny to nickel. This is the denom that shows on screen when the game is idle. The majority of players may not be aware of multi-denom and play the default the majority of time. Again, we found no real difference in revenue.

As evidenced by our Loose Troop and Manufacturers Best programs, best blackjack rules, loosest video poker, no ATM fees, etc. we truly believe the player deserves the best gamble he can get. We feel that providing the longest play time for the dollar is the best strategy we can employ. There is no need to play with hold percentages and adjusting them 1-3 points either way for a day or two. Of course, a Strip property may feel differently as they only have a limited amount of time to win the money.

We are hopeful that we can help push the manufacturers to continue to develop SBG in favor of the player. We are hopeful that a player can put his player card in and his preferred games, denoms, etc will appear for his enjoyment at whatever device he sits. There are so many opportunities for this to be a great product for the player, which we believe will be good for our casino and the industry. If cost savings also come, great, but that should not be the main focus of a product like this.' -- Nick Dillon

In conclusion, I think you are safe playing server-based slots. If you don’t believe me, keep an eye on the video poker pay tables. If you don’t see those going up and down on a daily basis, chances are the slot returns are being left alone as well.

This question was raised and discussed in the forum of my companion site Wizard of Vegas.

Slot machines are the most popular game in any casino. Sure, people bet more on the lottery, and the worldwide sports betting market is huge. But slot machines are the game du jour in most casinos, especially in the United States.

Sadly, slot machines games also offer the worst odds in the casino except maybe for keno. The compounding effect of making hundreds of bets per hour at the slots make these games a bigger moneymaker for the casino than keno.

There’s no science to playing slots. You put your money in, spin the reels, and hope for the best. The only decisions you make are which game to play and how much to bet.

This post covers how much you should bet. You’ll often hear so-called gambling experts say you should always place the maximum bet on slot machines.

This isn’t true for most games.

There Are Two Kinds of Max Bets on Slot Games

You’ll only find one “Max Bet” button on a slot machine game, but some games allow you to adjust the number of paylines you bet on. These are older games. They preceded the guaranteed “243 ways to win” games.

The first time I saw one of these games, a friend of mine called them “penny slots.”

How Often Do Slots Pay Out

The minimum bet was 10 cents per payline and the game had 25 paylines. The minimum bet was, to my way of thinking, $2.50. You could never bet just a penny on that “penny slot” game.

The maximum bet was $1 per payline. This was a sneaky way of getting the players to lay down more money. If you hit “Max Bet” on that machine, it took $25 in credits from your balance.

The More Complicated the Slot Game, the Less Likely You’ll Win

If you don’t understand how much you’re betting when you push a button on a slot game, there’s something wrong with the game. Perhaps the gaming industry just went through a phase of bad design.

But just because a slot machine game has multiple paylines, you shouldn’t assume that you’ll lose money if you bet on fewer paylines. Each bet on each payline is a separate bet, so playing all the paylines at once might make you more likely to see a winner. But you’ll also see more losing spins on the other paylines to compensate (in the long run, anyway).

The game is still programmed to spin as if all the paylines are active. I watched in horror, as that $25 bet spun the reels. I got lucky and the machine paid a low prize. I didn’t lose $25.

You can save money on a slot machine like this in two ways.

1. You can bet on fewer paylines.
2. You can lower the size of your bet.

My buddy disabled all the paylines and played $1. We saw a big prize combination come up but it didn’t pay anything. It was on a deactivated payline. There was no pattern on the one active payline.

A Few Older Games Increased Your Probability With Your Bet Size

This kind of game worked in the opposite way. You didn’t disable or enable paylines. The game’s help screen said some features were only enabled for the max bet.

We deduced that meant the theoretical return to player was calculated only for the max bet. And if the game wasn’t allowing you to use all the features with lesser bets then it must have had a lower RTP.

I went back to play some blackjack that night but my friend stayed and played that game. He did okay, not great. He said it made a big difference to play the max bet.

A Basic Slot Game Doesn’t Change the Probabilities

Whether it’s a 3D video slot with monsters running around the screen or just a classic three-reel game, if the slot game doesn’t disable paylines or require max bets, then the probabilities don’t change.

You can bet the minimum or maximum credits, and it won’t affect the outcome of the game. You simply change the number of guaranteed spins you can play.

If you have $300 and a game has a $1 minimum, you can play that game 300 times. If you make a maximum bet of $5 on every spin, then you can only play the game a maximum of 60 times (if you lose every time).

This makes a difference to some players. Other players say you’re not going to lose 60 times in a row, so why worry about that? Bet the max and get the most from your prize.

Most Progressive Slot Games Only Pay on Max Bets

If you’re playing a progressive slot game, then you need to make a maximum bet. I’ve seen a few games with multiple progressive jackpots where you only needed a max bet for the biggest jackpot.

If you have two versions of the same slot game, one is progressive and the other is not, you might as well play the max bet on the progressive version of the game.

Progressive slot games have a mixed reputation. I’ve talked to people who refuse to play them. They’re convinced the payouts are less on progressive games.

And I know people who almost exclusively play progressive slot games. They would rather win a big prize beyond whatever the machine itself pays. They don’t have to win $1 million if they can come away with a few thousand.

I’ve seen it play out both ways. I’ve never been in a casino where someone won more than $10,000.

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The Math Says Max Bets Put You Ahead Faster

Assuming you find a slot machine that pays reasonably well, maybe it’s on a “hot” streak despite its regular RTP, why not play only max bets?

If the maximum payout is 1000x your bet, you’ll make $999 on a $1 bet or $4995 on a $5 bet. That’s a really simple equation, so why doesn’t everyone bet that way?

If you’re down to your last $20, you may decide to “roll it up. ” But what’s the difference between rolling up $20 and rolling up $200?

It comes down to how many spins you can guarantee yourself. This is a psychological game we play with ourselves. The odds of winning on the next spin are the same regardless of how much you bet.

There Is Another Advantage to Not Making Max Bets

If you want to play a lot of different games and you don’t have an unlimited bankroll, then playing minimum bets allows you to spread your time around.

Some players like to test the games when they visit a casino for the first time. They make a decision based on luck.

I remember watching a man approach a slot machine late one night. I was getting ready to leave. He put a dollar in the machine and spun the wheels.

He went down the line of machines until one of them paid. There, he stopped and began playing.

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Conclusion

What Slot Machines Have The Best Payouts

Slot game designs have become more polished, but their rules are less confusing. People want to push a button and win some money.

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I think caution is only warranted if you’re unfamiliar with the games and you don’t know immediately if they have any special rules. It’s always a good idea to read the pay tables first.

And if you’re a little confused by the game rules, then only play minimum bets until you understand what the game is doing.

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There’s no need to rush into max bets if you’re not ready to take that chance.