Slot machines don't become due for a win when they haven't paid out in a long while, and they also don't become hot and start paying out more. Every spin is like a single coin toss or a single roll of the dice—the outcome is independent of all the outcomes prior to it. The location of the slot machine in the casino matters. Slots machines, although with an average RPT of 95.67%, do offer the chance to score that big payout and it could be argued that sacrificing a bit of house edge to get that opportunity is worth it. As a side note Blackjack's very low house edge is why it's pretty much always excluded from wagering requirements for online casino bonuses. When it comes to slot machines that pay out the most a good place to start would be the Guinness World Records, which listed the payout of £13,209,300 as the largest payout on an online slot machine, won on Mega Moolah created by Microgaming.
- Appendices
- Slots Analysis
- Miscellaneous
Introduction
The following table ranks the Las Vegas casinos according to the looseness of their video display reeled nickel slot machines. The returns are based on a sampling of five different types of machines. The data collected goes back as far as October 2001 so the information is a bit dated.
Las Vegas 5 Cent Slot Survey
| Rank | Casino | Average Return |
|---|---|---|
| 1 | Palms | 93.42% |
| 2 | Gold Coast | 92.84% |
| 3 | Sahara | 92.81% |
| 4 (tie) | Bourbon Street | 92.63% |
| 4 (tie) | Imperial Palace | 92.63% |
| 4 (tie) | Slots a Fun | 92.63% |
| 7 | Key Largo | 92.60% |
| 8 | Western | 92.57% |
| 9 | Ellis Island | 92.56% |
| 10 | El Cortez | 92.56% |
| 11 | Orleans | 92.56% |
| 12 | Circus Circus | 92.56% |
| 13 | Gold Spike | 92.55% |
| 14 | Fitzgeralds | 92.54% |
| 15 | Fiesta - Rancho | 92.53% |
| 16 | Arizona Charlie's East | 92.51% |
| 17 | Barbary Coast | 92.50% |
| 18 | Terrible's | 92.49% |
| 19 | Arizona Charlie's | 92.49% |
| 20 | Hard Rock | 92.47% |
| 21 | Town Hall | 92.47% |
| 22 | Longhorn | 92.47% |
| 23 | Riviera | 92.23% |
| 24 | California | 92.14% |
| 25 | Lady Luck | 92.10% |
| 26 | Nevada Palace | 92.06% |
| 27 | Plaza | 91.94% |
| 28 | Luxor | 91.92% |
| 29 | Paris | 91.92% |
| 30 | San Remo | 91.88% |
| 31 | Excalibur | 91.84% |
| 32 | Palace Station | 91.84% |
| 33 | Ballys | 91.82% |
| 34 | Las Vegas Club | 91.76% |
| 35 | Four Queens | 91.75% |
| 36 | Texas Station | 91.71% |
| 37 | Casino Royale | 91.67% |
| 38 | Boulder Station | 91.55% |
| 39 | Aladdin | 91.5% |
| 40 | O'sheas | 91.48% |
| 41 | Hilton | 91.40% |
| 42 | Boardwalk | 91.28% |
| 43 | New York New York | 90.99% |
| 44 | Horseshoe | 90.96% |
| 45 | Sam's Town | 90.89% |
| 46 | Santa Fe Station | 90.87% |
| 47 | Flamingo | 90.86% |
| 48 | Golden Nugget | 90.85% |
| 49 | Stratosphere | 90.8% |
| 50 | Tropicana | 90.71% |
| 51 | Golden Gate | 90.64% |
| 52 | Silverton | 90.57% |
| 53 | Main Street Station | 90.56% |
| 54 | Westward Ho | 90.40% |
| 55 | Fremont | 90.37% |
| 56 | Castaways | 90.36% |
| 57 | Monte Carlo | 90.24% |
| 58 | Stardust | 89.97% |
| 59 | Frontier | 89.91% |
| 60 | MGM Grand | 89.81% |
| 61 | Harrahs | 89.32% |
| 62 | Treasure Island | 89.32% |
| 63 | Mirage | 89.3% |
| 64 | Caesars Palace | 89.05% |
| 65 | Mandalay Bay | 88.87% |
| 66 | Rio | 88.72% |
| 67 | La Bayou | 88.26% |
| 68 | Mermaids | 88.26% |
| 69 | Bellagio | 87.42% |
| 70 | Venetian | 86.66% |
| 71 | Airport | 85.02% |
Excluded Casinos
The Suncoast and Rampart Casino in Summerlin do not allow playing slots and taking notes at the same time. I can not include any casino that prohibits the method in which I gather data.
Location Averages
The next table shows the average return by location.
Returns by Region
| Location | Average Return |
|---|---|
| Off strip | 92.07% |
| Downtown | 91.66% |
| Strip | 91.47% |
| Total | 91.74% |
The above sign can be found across the street from the Palms. Although I did the study Anthony Curtis published it in the LasVegas Advisor, which is how it become well known. The'..' in the sign encompases quite a bit of information,which was conveniently left off the sign. Actually the study only says that the Palms had the lowest nickel video slotsof the casinos surveyed in Las Vegas. The small print at thebottom says, 'Independent study conducted between November2001-February 2002 on Austin Powers, Fortune Cookie, Reel'em In, and Wheel of Fortune games. They left off LeopardSpots, and the study began in October.
Observations
There seemed to be no truth behind slot placement myths. Machines on the end of a bank did no better on average than those in the middle. There was also no correlation between return and proximity to such things as the main door, table game pit, high traffic areas, and low traffic areas.
Most casinos were very consistent in their slot returns.If one nickel machine had a return of x% then all others like it also returned x%. However some casinos did mix up loose and tight machines, most notably Treasure Island and the California casinos.
Methodology
A kind and anonymous source provided me with par sheets for the games in question. The EPROM (Erasable Programmable Read Only Memory) chip is what tells the machine the order of the symbols on the reel, in some cases how the stops are weighted, how much each winning combination pays, and any other pertinent information about how much the machine pays.It is up to the slot manager to select which EPROM chip to order according to the return percentage desired. On atypical game there might be about 8 different possible return percentages, ranging from about 85% to 98%.
Each of the different par sheets has five sets of distinct reels. Lucky creek casino no deposit. On video display slots the stops are not weighted; in other words all stops are equally likely. The distribution of each symbol on each reel is what determines the theoretical return of the machine. For example a higher paying machine may have more of the higher paying symbols.
On the machine itself three consecutive symbols arevisible on five different reels. By comparing actualobservations of results to the par sheets it is possible todetermine which reels the machine uses, and thus which par sheet and which return. There are various three-symbol combinations that appear in at least one but not all par sheets. So if one of these combinations occurs on an actualmachine it narrows down the possible par sheets. By playingenough the player can narrow down the possible par sheets tojust one.
To help identify the unique combinations I wrote a computer program for each game, which had the exact reel order of all 5 reels of all the par sheets. The program then counted the number of par sheets with each possible three-symbol combination. If the number was greater than 0 and less than the maximum then that combination was identified along with the associated par sheets it belonged to.
Slot Machine Odds Percentage
It is then a matter of simply playing the game and comparing the outcomes to the list of partially unique combinations. It only takes about 5-10 plays per machine to narrow down the possibilities to just one par sheet.
The averages in the table are actually an average of averages. For each kind of machine at each casino I took an average return. Then I took the average of these averages over the five kinds of machines I tested for.
Slot Machine Definition
There is some confusion about what constitutes a 'slot machine' or 'slot.' My definition, and that of most gamblers, is a gambling machine with either actual spinning reels or video representations of the them.
People in the gaming business and regulators generally refer to a slot machine as any gambling machine, including reeled slots, video poker, video keno, video blackjack,etc. For purposes of statistics both casino managers and regulators combine all the electronic gambling machines together. For example, the Slot Chart in Casino Player magazine and reports by the Nevada Gaming Control Board do not isolate just reeled slots but consider all electronic games a 'slot.' Therefore my return percentages should not be expected to agree with those reported by the casinos or regulators. As far as I know mine is the only source to isolate just the return of reeled slots.
Acknowledgements
I would like to thank Rob Feldheim for helping with the slot play and record keeping. Rob helped me with most of the casinos on the east side of town and part of downtown. I would also like to thank par Sheet Pete (not his real name)for providing the par sheets, without which this project would not have been possible.
Internal Links
Go to slot machine appendix3B (Jean/Primm slot returns).
Go to slot machine appendix 3D(Henderson slot returns).
Go to slot machine appendix 3E(Las Vegas quarter and dollar slot returns).
Go to slot machine appendix 3F(Montreal slot return).
Go back to slot machines.
External Links
The main-stream media has covered this study in depth. Here are links to some articles.
- Turning'em loose, an article that appeared in the Las VegasReview Journal on May 19, 2002, about the possible effectsof this study.
- One-Armed Bandit or Robin Hood?, an article by myself for Contingencies Magazine explaining the methodology, results, and weaknesses of the study.
- Play by the rules and the one-armed bandits will still win. Boston Globe article about slot machines, in which my Las Vegas survey is mentioned and my advice quoted. (cache)
Written by: Michael Shackleford
New slot machine players are going to find a lot of advice for beating the slots. Have a healthy skepticism when a slots expert tells you they know how to beat the slot machines. Among the games in a casino, video slots (in general) have a high house edge. Besides finding gaming machines with high jackpots and a low house edge, no skill or strategy is required to play slots. That means you can't expect to increase your odds of winning in most situations.
Read through the advice below to optimize your chances of winning at slots. None of the advice assures winning sessions. Instead, it helps you stretch your bankroll, so you enjoy playing the slots longer. Also, the longer your bankroll lasts, the more chances you'll have of hitting the big jackpot every slots player wants.
Use a Slots Card
Upon entering a live casino, sign up for a slots card. This provides comps and cashback, which automatically lowers the house edge by a bit. Never play a spin without using your slots card. In an online casino, accept the highest slots bonus and play according to the terms and conditions until you meet the wagering requirement. Once again, this lowers the house edge on online slots.
Make Max Bets
Look at the payout chart on a slot machine to determine how jackpots are paid. On many slot machines, the 5-coin bet pays out a higher percentage on the top fixed jackpot. For instance, a 1-coin bet might pay $200, a 2-coin bet might pay $400, a 3-coin bet might pay $600, and a 4-coin bet might pay $800. You might expect the 5-coin bet to pay $1000, but many slot machines pay out $1200 or $1500 in that case, trying to convince bettors to make the max bet.
If the jackpot increases a bigger percentage with a maximum coin wager, then it makes sense to make the max bet on a slot machine. If the bet size is too high for your tastes, then lower the coin denomination and make a max bet at that level. Of course, if there is no additional jump between the 4-coin and 5-coin bet, then you can wager a single coin and max out the coin denomination to the bet size you like.
Read the RTP Information
If an online casino or land-based casino publishes its return-to-player information, read through the RTP percentages to find the video slots with the best RTPs. Return-to-player or expected return is the percentage of a theoretical $100 you expect to see returned to you. It is a theoretical percentage based on probability, so an RTP of 95% does not assure you'll be paid $95 for every $100 you put in the machine. You might lose $50 or you might win $150, or you might win a progressive jackpot and go home rich.
The point of the RTP percentage is to give a player an idea of their expected return. If two slot machines sit next to one another and one has an RTP of 93% and the other an RTP of 95% (and both have similar jackpots), then it pays to play the game with the higher percentage. Over time, this leads to you maintaining a higher percentage of your bankroll.
Money Management Techniques
Read about bankroll management techniques. 'Money management' or 'bankroll management' is a series of steps you take to lock on winnings when good luck happens and limit your losses when a bad streak occurs. These do not assure that you'll win, but it optimizes your bankroll.
Players should know three core bankroll management methods: percentage betting, win goals, and loss limits. Learn to calculate your bankroll and divide this into percentages. Then bet between 1% and 5% of your bankroll on any given hand, depending on your capacity for risk. This limits the amount of your stake you lose on any given session, keeping you playing for longer throughout your vacation. It is a given that people go to the ATM machine or credit card when they lose their whole bankroll — which means you spend more than you intended. The point of percentage betting is to assure your bankroll last through your whole trip, so you never have to replenish.
What Is a Bankroll?
'Bankroll' is not defined as your entire bank account. It isn't defined as your discretionary spending budget or the money you have earmarked for entertainment expenses. Instead, it is a part of your discretionary spending cash and entertainment budget which is set aside specifically for gambling. In this case, a bankroll is less than your entertainment budget.
Once you have your bankroll figured, divide this into easy to understand percentage. If you have a bankroll of $1000, then divide this into percentages. These are simple calculations, but you should have an understanding of 1%, 2%, 5%, 10%, and 20% of your bankroll. In the earlier example, 1% would be $10, while 2% would be $20. 5% would be $50, 10% would be $100, and 20% would be $200.
Now that you have these, decide whether to bet 1% to 5% of your bankroll. Most experts suggest betting no more than 1% to 2% in order to maintain your bankroll throughout your casino trip or online slots session.
Setting a Win Goal
Next, set your win goal. This is the amount of winnings you set as your goal for any given slots session. If you have a win goal of 10%, then your win goal would be $100 for any given slot machine sessions. As soon as you hit that goal, you walk away from the slot machine — no matter what. A win goal is a hard-and-fast rule, because it locks in winnings. One of the biggest mistakes players make is losing back their winnings, because they think they're on a hot streak.
Setting a Loss Limit
Even more dangerous is trying to win back cash you just loss. To protect against this tendency, set a loss limit. Once again, make this your hard-and-fast rule. Typical loss limits can be 5%, 10%, 15%, or 20% — though 20% means you could lose the entire bankroll in 5 slots session. 10% to 15% is a good middle ground. Once you've lost that amount, walk away from the slot machine under all circumstances. The slots game is not 'due' to pay out, so step away from the machine and clear your mind.
Win goals and loss limits guard against gambler's fallacy. Gambler's fallacy is the idea that the law of averages assures or weight the odds in your favor. Slots use random number generators and every spin is entirely separate from the previous spin. Losing the last spin does not make it more likely you'll win the next spin. The odds stay the same, no matter how many wins or losses in a row you've had.
Avoid Progressive Betting
For that reason, avoid progressive betting systems like the Martingale system, D'Alembert system, Fibonacci system, and so on. Betting experts have used computer simulations to track the progressive betting methods against flat betting (same bet each spin). Flat betting beats all of the progressive betting schemes over 1 billion spins.
Progressive betting seems like it's working, because it leads to a lot of small winning sessions. The problem is that it also has a handful of huge losing sessions which wipe out all the wins — and then some. You can't beat the house edge with the Martingale system, however it might look to the naked eye. The Fibonacci numbers are incredible, but they are not a magical way to beat the casino.
Casino Payout Percentages By State
If an online casino or land-based casino publishes its return-to-player information, read through the RTP percentages to find the video slots with the best RTPs. Return-to-player or expected return is the percentage of a theoretical $100 you expect to see returned to you. It is a theoretical percentage based on probability, so an RTP of 95% does not assure you'll be paid $95 for every $100 you put in the machine. You might lose $50 or you might win $150, or you might win a progressive jackpot and go home rich.
The point of the RTP percentage is to give a player an idea of their expected return. If two slot machines sit next to one another and one has an RTP of 93% and the other an RTP of 95% (and both have similar jackpots), then it pays to play the game with the higher percentage. Over time, this leads to you maintaining a higher percentage of your bankroll.
Money Management Techniques
Read about bankroll management techniques. 'Money management' or 'bankroll management' is a series of steps you take to lock on winnings when good luck happens and limit your losses when a bad streak occurs. These do not assure that you'll win, but it optimizes your bankroll.
Players should know three core bankroll management methods: percentage betting, win goals, and loss limits. Learn to calculate your bankroll and divide this into percentages. Then bet between 1% and 5% of your bankroll on any given hand, depending on your capacity for risk. This limits the amount of your stake you lose on any given session, keeping you playing for longer throughout your vacation. It is a given that people go to the ATM machine or credit card when they lose their whole bankroll — which means you spend more than you intended. The point of percentage betting is to assure your bankroll last through your whole trip, so you never have to replenish.
What Is a Bankroll?
'Bankroll' is not defined as your entire bank account. It isn't defined as your discretionary spending budget or the money you have earmarked for entertainment expenses. Instead, it is a part of your discretionary spending cash and entertainment budget which is set aside specifically for gambling. In this case, a bankroll is less than your entertainment budget.
Once you have your bankroll figured, divide this into easy to understand percentage. If you have a bankroll of $1000, then divide this into percentages. These are simple calculations, but you should have an understanding of 1%, 2%, 5%, 10%, and 20% of your bankroll. In the earlier example, 1% would be $10, while 2% would be $20. 5% would be $50, 10% would be $100, and 20% would be $200.
Now that you have these, decide whether to bet 1% to 5% of your bankroll. Most experts suggest betting no more than 1% to 2% in order to maintain your bankroll throughout your casino trip or online slots session.
Setting a Win Goal
Next, set your win goal. This is the amount of winnings you set as your goal for any given slots session. If you have a win goal of 10%, then your win goal would be $100 for any given slot machine sessions. As soon as you hit that goal, you walk away from the slot machine — no matter what. A win goal is a hard-and-fast rule, because it locks in winnings. One of the biggest mistakes players make is losing back their winnings, because they think they're on a hot streak.
Setting a Loss Limit
Even more dangerous is trying to win back cash you just loss. To protect against this tendency, set a loss limit. Once again, make this your hard-and-fast rule. Typical loss limits can be 5%, 10%, 15%, or 20% — though 20% means you could lose the entire bankroll in 5 slots session. 10% to 15% is a good middle ground. Once you've lost that amount, walk away from the slot machine under all circumstances. The slots game is not 'due' to pay out, so step away from the machine and clear your mind.
Win goals and loss limits guard against gambler's fallacy. Gambler's fallacy is the idea that the law of averages assures or weight the odds in your favor. Slots use random number generators and every spin is entirely separate from the previous spin. Losing the last spin does not make it more likely you'll win the next spin. The odds stay the same, no matter how many wins or losses in a row you've had.
Avoid Progressive Betting
For that reason, avoid progressive betting systems like the Martingale system, D'Alembert system, Fibonacci system, and so on. Betting experts have used computer simulations to track the progressive betting methods against flat betting (same bet each spin). Flat betting beats all of the progressive betting schemes over 1 billion spins.
Progressive betting seems like it's working, because it leads to a lot of small winning sessions. The problem is that it also has a handful of huge losing sessions which wipe out all the wins — and then some. You can't beat the house edge with the Martingale system, however it might look to the naked eye. The Fibonacci numbers are incredible, but they are not a magical way to beat the casino.
Casino Payout Percentages By State
The reason progressive bets are bad is they increase the size of your bets (in some systems exponentially). If you start with $5 or $10 bets, a streak of bad luck has you betting hundreds of dollars on one spin. That's busts your bankroll and leads to a 'risk of ruin' — meaning you'll lose your whole bankroll if you hit a bad luck streak. No matter what you read online, flat bets are better.
Take Breaks for Rest and Refreshments
Play when you are at your best physically and mentally. Don't play when you're tired or sleepy. Don't play when you're hungry or thirsty. Take frequent rest and restroom breaks. If you get bored, take a break and walk the casino. Play another game to change up the betting pattern.
When you are rested and engaged, you won't have distractions that might lead to bad decisions. The idea is to have fun, so if anything is causing you to lose focus on the entertainment aspect of the game, walk away and save your bankroll.
Don't Go on Tilt
Tilt is a concept in poker where a player makes decisions based on emotional responses instead of solid strategy. It can cost a player a lot of money if they make bets based on anything but rational decisions. While going on tilt is not a concept in slot machine gambling, every game of chance has a personal component.
In short, don't play when you're agitated. Take stock of your inner thoughts. If your ego or anger is causing you to make irrational decisions, take a deep breath and calm down. If that doesn't work, walk away and clear your head. It stinks to lose a series of bets, but what stinks more is to lose a series of bigger bets when you're trying to make up for lost bankroll.
