Are Some Slot Machines Looser Than Others

by John Robison
Do the slot machines on the ends of aisles pay better than the machines in the middle? How about the machines near the table games? They’re tight, right? And are the machines near the coin redemption booths loose? Join us on our journey for finding loose slot machines.
The loose slot machine is the slot player’s Holy Grail. Much as King Arthur’s Knights of the Round Table searched Britain for the Holy Grail of myth, slot players search casinos for loose machines. Slot players have formulated many theories about where casinos place their loose machines to aid them in their quest.

Before we can figure out where the loose machines are, we have to figure out what they are. There is no U.S.D.A. system for grading the looseness of machines and no national or international standard that determines whether a machine is tight or loose.

First, we wanted to look at how loose the slots were in and around Las Vegas to identify where players had the best chances statistically. As it turns out, the Vegas Strip had the tightest slots at a 8.04% casino win rate. On the flip side, casinos in the Boulder Strip Area featured the loosest slot machines at a mere 5.66% house win rate. Loose slots are considered the slot machines that pay out more frequently than other slot machines. Loose slots are always the slot machines most popular with the players and are the most sought after. Of course any player will seek out and play a game that frequently rewards them.

So, what is a loose slot machine?

Say we have two 94% payback machines. Are they loose? I bet some people say yes and some say no. Why isn’t there agreement? Let me add a little more information to the scenario to see if it gives you an idea of why one person calls a 94% payback machine loose and another calls it tight. What if I told you that one machine was a nickel machine and the other a dollar machine? For most people who play nickel machines, a 94% machine is among the best-paying machines in their area. For most people who play dollar machines, on the other hand, a 94% machine is among the worst-paying machines in their area. The person who called 94% loose probably plays lower-denomination machines, while the person who called 94% tight probably plays higher-denomination machines.
Let me add one more piece of information. The dollar machine is a video poker machine. Dollar video poker players would rather have root canals on all their teeth with no anesthesia while their fingernails and toenails are ripped off than play a 94% payback machine. They have many adjectives for a 94% payback machine, but loose is not one of them.
You see, loose isn’t an absolute. Looseness depends on your frame of reference. Looseness is actually a comparison. We shouldn’t say “loose.” We should really say “looser”. We should really be asking where the looser machines are. But let’s bow to common usage and continue using the term loose machine.

So, what is a loose machine?

Quite simply, a loose machine is a machine that has a higher long-term payback percentage than another machine. The loose machines in a casino are those machines that have the highest paybacks. These are the machines that will take the smallest bites out of your bankroll in the long run. No wonder slot players are constantly searching for them.
Over the years, players have developed a number of theories about finding loose slot machines. Casinos place loose machines near the entrances, for example, so passersby can see players winning and are enticed to enter the casino and try their luck. The loose machines are also at the ends of the aisles to draw players into the aisle, where the tight machines are.
And, of course, a loose machine is always surrounded by tight machines. You never have two loose machines side by side. That’s done for players who like to play more than one machine at a time. If they should happen to stumble upon one of the loose machines, they’ll be pumping their winnings from it into the tight machines around it.
More theories. The machines near the table games are tight because table games players don’t want to hear a lot of bells and buzzers going off and happy slot players whooping it up after a big win. Another reason the machines near the table games are tight is because table games players will occasionally drop a few coins into a slot machine and they don’t expect to win anything, so why give them a high payback.
Similarly, the machines near the buffet and show lines are tight. People waiting in line are just killing time and getting rid of their spare change. They’re not going to play for a long time or develop a relationship with those machines, so the machines can be like piggy banks – for the casino! Money goes in and rarely comes back out.
The machines near the coin redemption booths, on the other hand, are loose. Players waiting in line for coin redemption are slot players and the casino wants them to see other players winning. Seeing all those players winning will make them anxious to get back on the slot floor to try their luck again.
Finally, finding loose machines in highly visible locations is most likely. Again, casinos want players to see players winning and be enticed into trying to get a piece of the casino’s bankroll themselves.
These are the theories I can think of off the top of my head. Maybe you know of some others. Most of the theories have a basis in psychology. When we see others winning, we’ll want to play too because 1) we’re greedy, 2) we’re envious, or 3) we see that at least some machines really do pay off and if we keep trying we might find one too.
Based on my own discussions with slot directors, interviews with slot directors, and seminars I’ve attended, I don’t think these theories are relevant in today’s slot world. To see why, we have to look at how slot machines and slot floors have changed.
Picture a slot floor of 10-20 years ago. Even if you don’t go back that far, I’m sure you’ve seen pictures on TV or in books. The slot machines on a casino floor in that era are arranged in long rows, much like products out for sale in a supermarket aisle. There’s no imagination used in placing the machines on the floor. The machines are placed using cold, mechanical precision.
On page 193 in Slot Machines: A Pictorial History of the First 100 Years by Marshall Fey, there’s a great picture of Bally’s casino floor in Atlantic City that illustrates my point. The picture shows hundreds of slot machines all lined up in perfect rows like little soldiers. The caption reads, “Like a Nebraska cornfield, rows upon rows of Bally slots extend as far as the eye can see.”

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Compare that image with the slot floor layout at a casino that was designed in the last five or so years. Studies have shown that players feel very uncomfortable playing in long aisles. They feel trapped when they’re playing in the middle of a long aisle, particularly if the casino is crowded. As a result, modern casinos have shorter aisles and when a long aisle can’t be avoided, it will be wider than others so players won’t feel like they can’t get out.
One of the finding loose machines theories has casinos placing loose machines at the ends of aisles to draw people into the aisles. Having shorter aisles means having more machines at the ends of those aisles. Can all of these machines be loose?
In addition to being uncomfortable in long aisles, players are also uncomfortable being put out on display for the other players. Perhaps they feel like they might become a target if their good luck is too visible.
One slot director I heard speak said that he tried to create “comfortable niches” for his players. Instead of being in a fish bowl, visible to most of the slot floor, players in his niches can be easily seen by only the other players in that niche.
Another theory about loose machine placement is that casinos place them in highly visible areas. Modern casinos still have highly visible areas, but the areas are visible to a smaller number of players. A loose machine in this area will influence fewer players than before.
The last change in the slot floor that I want to mention is perhaps the biggest change of all. Casinos used to have hundreds of slot machines. Now they have thousands. One slot director in Las Vegas said in an interview a few years ago that with so many machines on his floor, he didn’t have time to micro-manage them. He and his management decided the hold percentage they wanted for each denomination and he ordered payback programs close to that percentage for his machines. Furthermore, he said this was the common practice in Las Vegas.
As much as the slot floor has changed, the changes on the floor are dwarfed by the changes in the slot machines themselves. One thing that struck me about that picture of Bally’s is how all the machines look alike. They really do look like soldiers being inspecting, all standing at attention and in identical uniforms, or like rows of indistinguishable corn plants. In fact, it looks like there are only three different games in the 10 machines in the first row in the picture. Granted, the majority of the machines in Bally’s casino were Bally machines. Still I’m surprised by the lack of variety in the machines in the front row in the picture.
I heard that one theory why Americans have gotten heavier is that we have access to a wider variety of foods today than we had before. When meals consisted of the same thing time after time, it was easy to pass up second helpings of gruel and eat just enough to no longer be hungry. But now we have Chinese one night, Mexican the next, followed by Thai, burgers, pizza, and pasta -- it’s easy to overeat on our culinary trip around the world.
Just as variety in food creates desire, so does variety in slot machines. “Hey, I used to watch The Munsters all the time. I’ll try that machine.” “I never miss The Apprentice. I’ll give that machine a go.” “I played Monopoly all the time as a kid.” “I have a cat and a dog and a chainsaw and a toaster.”
Not only is there more variety in themes on machines, there’s also more variety in paytables. Back in the 1920s, a revolutionary change in slot machine design was paying an extra coin for a certain combination. Adding a hopper to the machine in the electro-mechanical era made it possible for the machine to pay larger jackpots itself instead of requiring a handpay from a jackpot girl. Adding a computer to the slot machine made it possible for today’s machines to pay modest jackpots of a few thousand coins all the way up to life-changing jackpots of millions of dollars.
The computer also makes it possible to add more gimmicks to machines. Gimmicks like “spin-til-you win,” symbols that nudge up or down to the payline, haywire repeat-pays, and double spin all add more variety and interest to the games.
Today’s machines are immeasurably more interesting and fun to play than those of even just a decade ago. Each new generation of machines has crisper graphics and better sound than the prior generation. Slot designers are working overtime to devise compelling bonus rounds that will keep players playing for just one more crack at the round. How many people playing Wheel of Fortune are trying to win the jackpot? Not many. Most people keep playing to get one more spin of the wheel.
Slot directors today don’t need to pepper their slot floors with loose machines to stimulate play. Today’s machines themselves generate more desire to play than seeing a player doing well.
Now I'll finish our discussion of where slot directors place loose machines with some additional thoughts, with a few anecdotes I've heard at slot seminars, and with what I think will be the final nail in the coffin of loose machine placement philosophies.
One of the placement theories says that tight machines should be placed near the table games because the table games players don’t like a lot of noise while they’re playing. Have the people putting forth this theory ever been near a craps table? A craps table with a shooter on a hot roll has to be one of the loudest places -- if not the loudest place -- in the casino. Craps players can be a boisterous lot even when the table isn’t hot. Okay, I can see players needing peace and quiet at blackjack tables (It’s difficult to count cards even in a quiet casino.), but not at craps, roulette, Let It Ride, and other tables. In any case, the casino can adjust the volume level on a machine. The slot director can put a very quiet, loose machine near the tables and not disturb a single table games player.
Another problem with following a loose machine placement philosophy is that it limits the flexibility slot directors have in moving their machines around on the slot floor. If the directors are going to give up a little bit in payback on some machines, they certainly will want to get their money’s worth and ensure that these machines are in locations where they’ll be played, be seen being played, and entice other players to play. Slot floors have only a limited number of high visibility areas. Slot directors won’t want to waste any of their high-paying machines in the more numerous less visible areas, where the machines won’t be encouraging other players.
Now I’d like to share some anecdotes I’ve heard at panel discussions during the big gaming show (first the World Gaming Congress, then the Global Gaming Expo) that’s held in Las Vegas each year.
First, one slot director described an experiment he conducted in his casino. He had a carousel of 5 Times Pay machines that all had the same long-term payback. He ordered new chips to lower the payback percentages on a couple of the machines to see if anyone would notice. The machines with the lower long-term paybacks received just as much play as the higher-paying machines. No player, furthermore, ever complained that some of the machines in the carousel were tighter than others.
In another seminar, a slot director shared the philosophy he used to place some machines that he had inherited from another property. These machines, he said, had lower long-term paybacks than the payback he usually ordered for machines on his slot floor. He said, 'I read the same books that the players read. I put these lower payback machines in the spots that the books said should have the high payback machines.'
My last anecdote is about a decision made by the slot director at the MGM Grand in Las Vegas many years ago. He was ordering 10 Times Pay machines for his slot floor and he was concerned about the low hit frequencies available for those machines. (Machines with multiplying symbols tend to have low hit frequencies, and usually the higher the multiplier, the lower the hit frequency.) The slot director was afraid that his players would think the machines were very tight because they hit so infrequently. He said that he ordered higher paybacks than he usually does for those machines in an attempt to offset the low hit frequency. The machines would still have a low hit frequency, but at least the average value of a hit would be a little higher than if he had ordered a payback percentage nearer the percentage he usually ordered. He hoped that would be enough to keep his players from thinking these were tighter than the other machines on his slot floor.
Although I think these anecdotes are the exceptions that prove the rule that some casinos at least order the same long-term paybacks for machines of a particular denomination, there is evidence that some casinos may not. In the first edition of Casino Operations Management, for example, Kilby and Fox list a number of “general philosophies that influence specific slot placement” including: “low hold (loose) machines should be placed in busy walkways to create an atmosphere of activity” and “loose machines are normally placed at the beginning and end of traffic patterns.”
They then say that “high hit frequency machines located around the casino pit area will create an atmosphere of slot activity.” I’m not sure whether they’re saying high hit frequency should or shouldn’t be placed near the pit. In any case, note that one philosophy said that loose machines create an atmosphere of activity and another said that high hit frequency machines also create an atmosphere of activity. This is the perfect segue into what I think puts the final nail in the coffin about loose machine placement theories.
There is no correlation between long-term payback and hit frequency. A low hit frequency machine can have a high long-term payback. High hit frequency machines, in addition, can have low long-term paybacks. Larry Mak, author of Secrets of Modern Slot Playing, recently queried the Nevada Gaming Control Board to find out the payback reported on penny machines. The Board said it was 90.167%. Most of the penny video slots have very high hit frequencies, yet the overall average long-term payback is very low.
The usual reasoning behind putting loose machines in highly visible areas is so slot players can see other players winning. Maybe we should be more precise here and say that players will see other players hitting and assume that they are winning because they are playing loose machines. But because there’s no correlation between hit frequency and long-term payback, these players can actually be playing machines with low long-term paybacks.
I don’t put much stock in loose machine placement theories, but I do believe slot directors may follow a hit frequency placement philosophy. Slot directors may try to place high hit frequency machines in visible areas to encourage play. This philosophy says and implies nothing about the long-term payback of the machines.

John Robison is the author of 'The Slot Expert's Guide
to Playing Slots.' His website iswww.slotexpert.com

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Are Some Slot Machines Loser Than Others Quotes

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.

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.

Are Some Slot Machines Loser Than Others Lyrics

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.

Are Some Slot Machines Loser Than Others Youtube

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.

Are Some Slot Machines Loser Than Others Free

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