Casinos have more slot machines than all of the other games combined. But unlike many casino games, the slots still have some secrets.

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Here’s a list of 15 slot machine secrets the casinos don’t want you to know about.

1. Slot placement isn’t random

Although casinos would like you to think that everything on the floor is placed in a completely random way for ease of access and aesthetics, this certainly isn’t the case.

Every square foot of the casino is analyzed, measured, and reported on by the casino gaming department. Traffic patterns are monitored and value is placed on certain areas of the casino to determine which slots or games to place in that area.

Usually, the highest yield slots are placed in the most popular locations in the casino. On top of this, the most popular slots are also placed in these areas to attract players into the casino to play.

So now you know that those slots that are most prominent and visible are the ones that make the most money for the casino, which means they’re also the most disadvantageous for the player. Head towards the back of the casino next time you want to play slot machines to find a better value.

2. Some slots pay out more than others

Not all slot machines are created equal, and this means they all don’t pay out at the same rate.

Generally speaking, video slots pay out less than classic reel slots. This is because reel slots are cheaper to run and maintain, and aren’t as appealing to the player as the video slot.

Video slots are now extravagant and have pop-culture themes, which attracts more players. Because of this, the casinos can dial down the payout rate.

Alternatively, the classic slots aren’t as popular or appealing anymore so the casinos will dial up the payout rate to attract more players, and subsequently keep you at the slot longer. I suggest you do a bit of searching on the internet about slot payout rates as this information is widely available, particularly for popular gaming locations.

3. The slots club doesn’t exist to reward you

This is one of the biggest cons in the gambling industry. You know how the casinos promote themselves as giving back to the player and rewarding you for your play? This is all a lie.

Now, I’m not saying you won’t get some free play credits, access to promotions, and other comps for being a part of the slot or player’s club, but this isn’t why it exists. It exists to provide the casino marketing department with player data so that they can attract and retain you as a customer.

Yes, that’s right, all the free money and comps you get out of the casino are from the marketing department. They will analyze your play, movement, likes, dislikes, and betting patterns to determine how best to market themselves to you so that you return.

The slots club is a powerful marketing tool, and while it’s always a good idea to join and use your card whenever you play, don’t fool yourself into thinking that this is all done to reward you.

4. You can’t win at slots in the long run

People do win at slots all the time. They have big wins and small wins; the problem is that on a long enough timeline it’s impossible to win.

Slots are manufactured and programmed in a way to ensure that they only pay back a certain percentage of the money that’s placed into them by players. Usually, this is in the range of 70-90% but it can be far worse or better depending on where you’re playing.

No one would ever play if you didn’t win from time to time, so this is also built into the machines. Some casinos don’t want you to know this and in some US states, they don’t even have to tell you what the payout rate is. Fortunately, there are many states that do provide it to players, and I highly recommend taking advantage of that information.

Although it’s pretty common these days for players to know that you can’t win in the long run, some still don’t know, and those that are oblivious to this fact are loved by casinos.

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5. Max betting is the best option

This one may seem counter-intuitive but it’s true. On most slots, max betting activates all the bonuses and jackpots and increases your odds of getting lucky and winning, which makes it the best option for players.

Although it doesn’t make too much of a difference, it still creates more favorable conditions for the player. The casinos don’t want you to know this because they want you to bet small and more often at a worse payout rate, which makes them more money in the long run.

One thing you certainly don’t want to do though is max-bet above your bankroll and burn through more money than you intended to. Playing more than you can afford to lose is playing right into the casino’s hands. If you can’t afford the max bet on a slot then drop down in denominations or move to a machine where the max bet is smaller and works within your bankroll.

6. Class 2 slots aren’t really slots at all

Sometimes you’ll come across slot machines that are classified as class 2 slots. These are usually found on native Indian reservations or racinos in the United States.

These aren’t traditional slots like what you would find in Las Vegas. Vegas slots are Class 3 slots and are proper slot machine games.

Class 2 slots are actually pre-programmed bingo games which present a slot face for entertainment purposes. Class 3 slots are usually illegal in the jurisdictions that have these slots bingo games, so game manufacturers and casinos combined their forces to come up with this alternative.

Sometimes you’ll see a small bingo card on the bottom corner of the screen which will straight away tell you that this is a class 2 slot machine. So, be warned, these machines are not slots at all and you’ll be effectively playing computer bingo when you start spinning on these.

7. Video slots pay out less than classic slots

Big fancy video slots will almost always pay out less than classic reel slots. This is because of the fact they’re more entertaining, draw more players and action, and cost the casinos a lot more to run and maintain.

These big machines often take up two to three times the amount of space compared to classic slots and tend to cost the casinos a lot more to keep them running. In order to maximize profits, the casinos will then dial down the payout rate on these machines so they still make enough money on them.

Immersive video slots are a huge moneymaker for the casino, so don’t go in thinking you have the same chance of winning on these compared to traditional old school slots. If you’re looking for better chances to win on slot machines, then stick to the classic slots.

8. Slots are completely random

Casinos don’t want you to know this, but slot machines are completely random in nature. Although they are weighted to pay out at a certain rate, this is still in line with the randomness of results that a slot will produce.

Each spin is completely independent of the previous spin. As an example, if you were to win the jackpot on one spin, then the likelihood of winning the jackpot on the next spin is exactly the same. No previous events impact future events. This isn’t how they work.

Casinos don’t want you to know this because they want you to think slots are “hot” or “cold”, because that will cloud your judgment in respect to how much you play and gamble. This works out better for them in the long run so they are happy for these myths to grow and spread.

9. All of your play is tracked

From the moment you sit down at a slot and enter your player card and cash, every movement you make is tracked automatically by the casino. Slot machines are now networked and have sophisticated hardware and software to track everything you do.

This information is collected, analyzed, and insight reports are developed and delivered to the casino marketing department so they can work out the best possible way to market their casino and slots to you so that you keep coming back and play more. If you don’t want your play tracked then simply don’t use your player’s card, but then you won’t get any casino comps.

In the near future, if it’s not being used already, casino marketing departments will start using security infrastructure to monitor and track your play irrespective of whether you use your card or not. Facial recognition programs will detect you, associate you with a player’s card or create a new player account and track everything you do on a video feed.

This is a bit scary and it shows the lengths casinos will go to. If you play online, everything is tracked under your player account, so it’s easier for online casinos to monitor what you do in this respect.

10. Payout tickets are more likely to be put back into a machine

Over the past 20 years, casinos have slowly phased out cash payouts at slots. These days you’ll likely receive a ticket when you cash out, which you then must take to a cash-out machine or the cage to exchange for cash.

While the casinos will claim this is for your convenience, one of the main reasons they’ve made this change is to disassociate you from the fact you’re holding money. This is similar to what they do with chips on table games.

Psychological studies have proven that people are far more likely to gamble more with a ticket or chips, as opposed to cash. So don’t be fooled into placing your ticket into another slot on the way to cashing out, they’ve done this on purpose. I’d recommend that you always cash the tickets out for cash every time, instead of keeping it for play later.

11. Slot arms don’t exist as much anymore because they slow down play

Back in the day, pretty much every slot machine had an arm, or lever, that you pull to activate the spin. These days it’s much harder to find machines that have these.

While there are a few reasons for this, the main reason and the one the casinos don’t want you to know is because using a lever is much slower when compared to pressing a button. Casinos want you to be playing as quickly as possible when it comes to slots because the more you spin the more the odds move in their favor.

So by having buttons instead of levers the game moves a lot faster. Some may even say they’ve removed the lever so people don’t refer to slot machines as one-armed bandits anymore, but that may just be here-say.

12. Games are designed to be played as fast as possible

As we touched on in the previous secret, casinos want you to play whatever game you’re on as quickly as possible. While one of the main measurements on a slot is the time spent playing, they also want you to play as quickly as possible.

This increases the yield on the machine for the casino, meaning they make more money. Consider this, if you have a bank of widely popular slots which many people want to play, and it takes 20 seconds per spin, that’s quite a lot of time.

If a spin takes five seconds then you’re getting four times the amount of play on that machine which results in much more money passing through. So, all the time the casinos are trying to think of ways to make games happen much faster. They don’t want you playing slowly, so make sure you take your time next time you sit down at a slot. After all, the more time you play the more entertainment value you get.

13. Slot sounds and graphics are designed to make you feel happy

One thing that casinos certainly don’t want you to know about is the fact that slot machine manufacturers have teams of psychologists and researchers that provide advice on what sounds, colors, movements and graphics to use in games in order to make the player feel as happy as possible.

This is both good and bad. Firstly, it’s good if you’re playing for entertainment’s sake and know your limits when it comes to how much money you’re willing to play with. If this is the case then why not play a game that’s designed to make you feel happy.

Secondly, it’s bad when it comes to problem gamblers who don’t know when to stop and are chasing that happy feeling that the games give them. So this is a two-way street; that’s for sure. Casinos probably don’t want you to know this because it isn’t a great look.

14. Sometimes a win isn’t a win

One recent trend on slots is to play a jingle and show an animation showing that a player has had a win; this used to be a good thing and it meant you were making a profit, but not so much these days.

Much to the ire of lawmakers and the regulators, slot machines now play this jingle and imply a win, even when the spin results in less money won than you actually wagered on that spin in the first place. So this is essentially a loss and it’s trying to trick the player into thinking that they won.

Regulators are trying to have this outlawed but it will take some time. So, next time you’re playing don’t be fooled by the animation and sounds and the on-screen advice that says you’ve had a win. Make sure you check how much you ‘won’ when compared to how much you bet, before you celebrate.

15. Major progressive jackpots are played across multiple venues

Have you ever walked past a progressive jackpot slot machine and stared in awe at the huge jackpot which is currently available and is running into the millions of dollars?

If so, then you may not be aware that these slots are actually linked nationwide and the jackpot is played across thousands and thousands of machines and the casinos actually have no part in this prize.

Casinos don’t want you to know this of course; they want you to think that it’s just that machine so that you sit down and play and spin away thinking that you’re the only person who could possibly win that prize at that time.

These major progressive jackpot machines actually take a small cut from each bet you make and divert it to the major jackpot. So you should never play on one of these unless your ultimate goal is to win the life-changing money, and there’s certainly nothing wrong with that.

Conclusion

Casinos are designed to make money just like any business. The slot machines are a big piece of the profit puzzle so the casinos do everything they can to make them more profitable.

Now that you know these 15 slot machine secrets the casinos don’t want you to know you can gamble as an informed player. If you love slots there’s no reason to stop playing, but you should know these secrets before you play again.

Slot machines are the most popular gambling game in most United States casinos, but the number of players who really understand how they work is terribly small.

The purpose of this post is to explain what slot machines are and how they work in language anyone can understand.

Frankly, I think most people who understand how slot machines really work avoid playing them. And I think some of the people who play slot machines and think those games are cheating are daft in their reasoning, too.

If you pay attention to what I’ve written in this post, you’ll know the truth about slot machines.

And when you know the truth, you can make a decision about whether to play as an educated person instead of as a rube.

Modern slot machines are powered by computers and electronic devices, but that wasn’t always so. Understanding how those computers and electronics produce results requires some understanding of the history of slot machines and how they worked in the past.

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What makes a slot machine a slot machine is the presence of spinning reels with symbols on them. Early version of slot machines used actual physical reels, springs, and gears to create random results.

On the front of these machines was a window with a horizontal line across it. This represented the “payline.” If symbols lined up and matched on the payline, you won a prize amount.

At first this was money, but eventually, slots were outlawed. Many bar and pub owners replaced the monetary prizes with fruit-flavored candy and sticks of candy to get around the new laws.

The traditional, classic symbols on slot machine reels are still based on those older machines. This is why you find so many slot machines with cherries, apples, and bars on them. (The bars represent sticks of gum.)

The early slot machines used the same strategy to make money in the long run that modern slot machines do. They gave you odds of winning that weren’t commensurate with the payout amount.

This is best explained using some mathematical examples.

There are 1000 possible combinations of symbols on a 3-reel slot machine of that description, but only one of them is a possible winner.
If that winning combination pays off 950 for 1, the casino has a clear advantage, right?

Over 1000 spins, you’ll lose $1000, but on that single winning spin, you’ll win $950 of it back. You’ll lose $50.

That is, of course, a theoretical result based on long-term mathematical expectations. In the short run, anything can and often will happen when you’re playing slots.

And real slot machines are more robust than that. They have more winning combinations with lower prize amounts, but all the prize amounts multiplied by all the probabilities of winning always result in a number less than 100%.

That number is called the payback percentage.

Modern slot machines use the same kind of math and game-play, but instead of using a complicated system of gears and stops, they use computer programs to create the same kind of odds. This has perks for the player, but it has drawbacks, too.

On a traditional mechanical slot machine, the probabilities are straightforward. If you have 10 different symbols, the probability of that symbol showing up on a payline in a spot is 1/10.

With a computerized slot machine, the designers can use any kind of weighting that they want to. One symbol might be programmed to show up 1/20 of the time, while another might be programmed to show up 1/5 of the time.

You have no way of knowing or estimating what the probability is, either.

To make things even more interesting, 2 identical slot machines might have different programming “under the hood.”

You might be playing The Price Is Right slot machines at a casino and be facing a 95% payback percentage.

You might switch to the same game at the same stakes at the machine next to it and be facing a payback percentage of 85%. There’s no way to tell the difference.

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This change in the way the games work enables casinos to offer larger jackpots than they would be able to offer otherwise.

But you trade transparency for that.

I prefer to play games where I can figure out how much of a mathematical disadvantage I have.

That’s impossible with most modern slot machine games.

Random Number Generator Programs and Why Slot Machines Don’t Cheat

The computer program that powers these results is called a random number generator. That’s almost always referred to by an acronym of “RNG.”

It’s a simple enough computer program. It’s just a program that continually thinks of numbers—thousands of them per second. When you press the spin or stop button on a slot machine, the computer program stops on one of those numbers.

That number corresponds to a combination on the reels of the machine.

The outcome has been determined by the computer program before the reels stop spinning.

This doesn’t mean that the machine is cheating. You’re not more likely to lose after a winning streak, and you’re not more likely to win after a losing streak. Every spin of the reels is an independent event.

The difference between the odds of winning and the payout odds for each bet is what creates an edge for the house. Cheating isn’t necessary for the casinos or the slot machine designers.

The math takes care of that for them.

I have a paranoid friend who literally believes the world is flat. He also thinks slot machines are rigged.

He’s wrong about both, but he’s less wrong about the slot machines.

They ARE rigged, mathematically, by providing payouts that are lower than the odds of winning.

But they work honestly in terms of providing completely random results and independent trials. In fact, in any jurisdiction where such games are legal, they’re heavily regulated, inspected, and audited.

Casinos make more money from slot machines than they’d probably make with a printing press that printed new money in that same amount of floor space.

The Difference between Short Term Results and Long Term Expectations

The mathematical examples I’ve used assume you’re interested in predicting results in the long run. That’s the entire point of gambling math as it relates to probability.

But long term expectations have little to do with what happens in the short run.

The long run can be defined as an infinite number of bets. Every bet you place brings you closer to the long run, but you’ll never get there.

The Law of Large Numbers is a mathematical principle that says the more independent trials you run, the closer you’ll get to the theoretical expectation.

In the short term, though, you’re possibly going to win. I’ve seen surveys that showed that roughly 20% of the gamblers at a casino leave with some winnings in their pocket on any given visit. The casinos don’t mind. In fact, they’re counting on it.

If no one ever won, people wouldn’t play. And without gamblers, casinos make no money and can’t stay in business.

My best advice to someone who’s playing slot machines is to not spend much time in front of them. If you get a reasonable sized win when you sit down, be willing to quit and walk away.

The longer you play, the more likely you are to see results that mirror the long term expectation.

Your goal should be to take advantage of those short term aberrations called luck or deviation. You can’t count on that in any given situation,

The longer you play, the more your results are going to resemble the mathematically expected results.
And with a negative expectation game like a slot machine, you’re going to lose all your money if you play long enough. That’s how a negative expectation gambling game works.

What about the Other Bells and Whistles on Modern Slot Machine Games?

When I use the expression “bells and whistles,” I’m talking about features of slot machine games other than the standard 3 spinning reels. Some of these additions and changes are complicated, but some of them are simplicity itself to understand.

One example of a bell and whistle is the number of reels on a slot machine game. Traditional slot machines just had 3 reels, and one of the reasons for that was the size of the reels and the machine that housed them.

The number of symbols also used to depend on the size of the reels—the smaller the reels, the fewer symbols you can print on them.

Additional paylines are another bell and whistle on most modern slot machines. The traditional machine just has a payline horizontally across the center, but modern slot machines have various patterns similar to the various patterns you might use on bingo cards.

They might run diagonally, or they might run in a zig zag pattern.

To activate multiple paylines, you must make multiple bets. Each payline gets activated by a wager, and the payout is based on the combination that appears on that line and the wager on that line only.

On larger machines with lots of paylines, you can win on multiple paylines but still be a net loser. For example, if you bet a nickel on each of 20 paylines, you’ll have put an entire dollar in action. If one of those paylines wins for 50 cents, you’ve still lost 50 cents on the game.

But the slot machine still lights up and shows you the payout as if you were a net winner.

Wild symbols are another example of a bell and whistle on a modern slot machine. If you’ve played cards, especially poker, you are probably already familiar with the concept of a wild symbol.

It’s a symbol that can be used to complete any winning combination. It acts as a replacement for the symbol that you needed to make that combination.

Scatter symbols are a little more confusing, but they’re similar to wild symbols. A scatter symbol is one that doesn’t have to be on a payline to trigger a payoff. You just need enough of those scatter symbols to show up somewhere on the screen at once.

Many times, on a 5-reel machine, you’ll get a payoff if 3 scatter symbols or more show up from left to right. They don’t need to be along a payline or anything like that. They can literally be “scattered” across the screen.

Sometimes scatter symbols and/or wild symbols trigger bonus games or free spins. Free spins are a simple enough concept to understand—they’re just extra spins on the reels that you don’t have to pay for.

On some machines, they’re always winning spins—the only thing in question is how much you’re going to win on each spin.

Bonus games can be more interesting, but they’re almost always entirely random. Often the bonus games involve choosing from a video display of multiple boxes or treasure chests. Depending on which one you choose, you get a prize amount.

There’s no skill involved in these kinds of bonus games.

Slot machine designers are now experimenting with design elements that borrow from video games like Space Invaders, though. If you get a certain number of symbols, you can trigger a bonus game, and the amount you win from that bonus game might depend on how many aliens you can shoot from the skies overhead.

Slot Machine Strategies and Systems Don’t Work, So Don’t Even Bother

If I could teach you only one thing about slot machine games, it’s this:

They’re entirely random. Each spin is an independent event. This means that what’s happened on previous spins has no effect on what’s going to happen on a subsequent spin. Most strategies and systems assume that the previous spins have some relationship to subsequent spins.

I once read an entire book of slot machine systems that were supposed to help you win at slots. The guy who wrote it was a total cornball. I’m not even going to mention the name of the book or the author here.

I will describe what he suggested, though. His first piece of advice was to track how many “naked pulls” you’ve had in a row.
A naked pull on a slot machine is one that results in no winnings at all.

His advice was to switch machines any time you get 5 or 7 naked pulls in a row. (I don’t remember the exact number, but it was something arbitrary like that.)

The idea behind this advice is that any machine which hasn’t paid out in the last 5 or 7 spins must be running cold, so you should find a machine that’s NOT running cold.

He also offered advice about setting loss limits and win goals. This idea has some merit, but not much.

A loss limit is the amount of your session bankroll that you’re willing to lose before walking away from a game. 20% is a commonly suggested number. So if you put $100 in a slot machine game and lost $20, you’d cash out and walk away for that session.

A win goal is just the opposite. It’s an amount that you will win which will signal that it’s time to quit playing. You might have a 20% win goal, too, which means that once you’re up to $120, you’ll call it a day for that playing session.

This can help you avoid having huge losing sessions. It can also help you have book occasional winning sessions.

What it doesn’t do is change the odds in your favor in any way. In the long run, you should think of playing slot machine games as one long game that lasts for the rest of your life.

Eventually the odds are going to even out to a point where you see the kind of results the math would predict, regardless of what happens during those individual sessions.

I’ll confess that when I play slot machines, I do use a variation of this strategy. My loss limit, though, is always 100% of the amount I put in the machine. I either want to hit my win goal or lose all my money trying.

That’s as effective as any other loss limit, but people never suggest that.

Raising and lowering the sizes of your bets don’t change the odds on the machines, either. Don’t pay attention to any advice which suggests otherwise.

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Other Lame Pieces of Slot Machine Strategy Advice You’ve Probably Heard (Or Will Hear)

One of my favorite pieces of advice from slot machine gurus is to try to find loose slot machines on the ends of the rows of slots at the casinos.

The idea is that the casino managers put the loose machines there to attract more customers.

You’ll find superstitious types who believe that playing with you slot machine card inserted is also a mistake. They think having the card inserted makes it impossible to win.

They don’t understand how the computer programs in question work at all. They’re not connected. The random number generator determines the results of each spin. The card reader just tracks how much money you’ve put into action.

The 2 have no relation to each other.

In fact, it makes no sense that a casino would want to discourage you from using the card reader. They have a slots club for a reason—they want to encourage people to play at their casino.

In the long run, the math behind their games ensures them a healthy profit. They count on a percentage of their gamblers going home a winner.

They also want their gamblers to take advantage of the free stuff they’re earning with their slot machine club cards, because that means it’s working. It’s motivating them to play more.

Why Almost Every Other Game in the Casino Is Better than Slot Machines

The traditional way that gambling experts measure one casino game against the other is by comparing the house edge. The higher the house edge, the more the casino expects to win over time on average for each bet you place.

Slot machines generally have the highest house edge in the casino. Some of them might be exceptional, but you have no means of comparing them, because a slot machine is like a black box. You put money in and get money back.

Compare that to a video poker game, where you can calculate the payback percentage based on the probability of getting specific poker hands against the payout for those hands.

Since those games use a 52-card deck to determine your probabilities, it’s a simple enough matter to compare one video poker game to another.

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Table games make it even easier to compare house edge figures.

But even if a slot machine had the same house edge as all the other games (or lower), it’s still one of the fastest-playing games in the casino. An average slot machine gambler makes 600 spins per hour.

This means slots players are putting more money into action and losing more money over time as a result.

Finally, slot machines are proven to have an addictive effect on the human brain. Addiction is bad. Alcohol can be fun. Some drugs can be fun, too.

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But addiction takes something that would otherwise be fun and turns it into something that’s NOT fun.

Slot machines are the most popular games in the casinos, but that’s only because most gamblers are stunningly ignorant of how they work. You don’t have that excuse any more.

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