Although every win at slots is totally random, you can still estimate your winning odds and calculate the probability of landing a lucky combination. As you probably know, each slot has a certain number of reels. The majority of slot machines features 3 or 5 reels. On each real, you can see symbols (images), both regular and special ones. Why are we telling you all this? Because these characteristics affect your winning chances in a direct way.
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Which Slots Pay Out Most Frequently
The fewer symbols each reel has, the higher are your winning chances. The problem is that you don't know how many images each reel contains. Once the reels stop spinning, you only see the symbols on the visible part of the reels but you don't know how many symbols there are in total. Luckily, some software providers indicate this information in slot specifications.
Let's take an example. On Slot A, each reel has 10 symbols. On slot B, each reel has 20 symbols. Obviously, Slot B will generate winning combinations more often than Slot B.
The more consecutive symbols a winning combination contains, the more it pays. If you're playing a classic 3-reel slot machine, the maximum payout is triggered by 3 identical symbols. In a 5-reel slot, the highest paying combination consists of 5 symbols. Chances of landing the highest-paying combination are better on a 3-reel slot than on its 5-reel counterpart.
This takes us to an obvious conclusion. To maximize the probability of hitting a payout, you should play 3-reel slots with a small number of symbols on each reel. This is when you're guaranteed to have the best chances to succeed.
How To Calculate Your Winning Chances
For a more precise estimation of your winning chances, you can use the mathematical formula below:
N = 100%/(Bni)
N – chances of landing a winning combination;
i – number of reels in a slot;
Bn – number of symbols on each reel.
To see how the formula works, let's take a 3-reel slot machine, with 10 symbols on each reel. For this slot, the probability of landing a combination of 3 identical symbols is 0.1% (see below).
N=100%/(10*10*10)=100*/1000=0.1%.
Note that this probability is pretty high! For a 5-reel slot, this value will be lower. Let's take a look:
N=100%/(10*10*10*10*10)=100*/1000=0.001%.
As you can see, two additional reels drastically diminish your chances of landing a 5-symbol winning combination.
What Makes 5-Reel Slots So Popular
As we just discovered, slot machines with 5 reels are less profitable for a player than their 3-reel 'colleagues.' Logically enough, this must have affected their popularity among gamblers. Why didn't that happen? The reason is pretty simple.
To make up for lower winning chances, 5-reel slot machines offer generous bonus symbols, risk games, and free spins.
Extra bonuses boost the attractiveness of the game in the eyes of players. The more paying symbols a slot features, the higher are your chances of landing a lucky combination or triggering a bonus round. As for 3-reel slots, they tend to lack special symbols and free spins.
Slots odds are the probabilities of getting a winning combination on the reels. They depend on the type of slot machine you play. Originally the odds were very easy to calculate as the only thing the players had to consider were the number of reels and the symbols used on each of the reels. As a result, the 3-reel slot machines are traditionally believed to be better for player's winning chances, and thus the more reels and symbols on them, the lower a player's advantage.
How to Calculate Odds
The odds of getting any combination on the slot reels are easy to calculate if you know the number of symbols used on each reel. Let's take a closer look at the odds and consider an example:
If you have to make a line of 3 diamonds on one payline to win the jackpot, it is most likely that each reel has only one diamond symbol on it. If the machine is a 3-reel one and there are 20 symbols on the reels, the chances of hitting this combination are:
Three Reel Slots Machine
Possible combinations on the reels: 20 x 20 x 20 = 8000. The odds of getting this combination are 1 in 8000. For a 5-reel slot machine the chances are even less: 20 x 20 x 20 x 20 x 20 = 1/ 3,200,000 (1 in 3,200,000). The slots probabilities are usually shown as a percentage, so for 3-reel and 5-reel slot machine with 20 symbols on each reel we have these probabilities:
3 Reel Slot Machine Odds Slot Machines
However, the number of symbols on the reels can differ from machine to machine, and that is why the slots odds are different. Here we look at some more examples of slot machines containing 3 and 5 reels each with different number of symbols on them - for these examples: 20, 22 and 25.
| Slot Machine Type | Number of Symbols | Number of Combinations | Odds | Probabilities |
| 3-reel | 20 | 8,000 | 1 in 8,000 | 0.0125% |
| 22 | 10,648 | 1 in 10,648 | 0.0093% | |
| 25 | 15,625 | 1 in 15,625 | 0.0064% | |
| 5-reel | 20 | 3,200,000 | 1 in 3,200,000 | 0.0003125% |
| 22 | 5,153,632 | 1 in 5,153,632 | 0.0000194% | |
| 25 | 9,765,625 | 1 in 9,765,625 | 0.00001025% |
Slots Payback Percentages
The slots payback or return is the amount of money the slot machine pays out as winnings, against the total number of credits wagered by players. The payback is always shown in percentage.
The main idea behind counting the odds in slot machines lies in understanding how the machine pays out money. Unlike what many people believe, not everything is random in a slot machine. Slots are programmed to pay out a certain percent of the money put in with each play.
For example, one machine may pay back 80% of bets while another one may pay back 91% and even 100%. This means that for every dollar put in the machine the casino takes 9 cents and pays out 91 cents. But it does not do it for every dollar put in, it just pays out explosively and this is what makes the game so great.
The fewer symbols each reel has, the higher are your winning chances. The problem is that you don't know how many images each reel contains. Once the reels stop spinning, you only see the symbols on the visible part of the reels but you don't know how many symbols there are in total. Luckily, some software providers indicate this information in slot specifications.
Let's take an example. On Slot A, each reel has 10 symbols. On slot B, each reel has 20 symbols. Obviously, Slot B will generate winning combinations more often than Slot B.
The more consecutive symbols a winning combination contains, the more it pays. If you're playing a classic 3-reel slot machine, the maximum payout is triggered by 3 identical symbols. In a 5-reel slot, the highest paying combination consists of 5 symbols. Chances of landing the highest-paying combination are better on a 3-reel slot than on its 5-reel counterpart.
This takes us to an obvious conclusion. To maximize the probability of hitting a payout, you should play 3-reel slots with a small number of symbols on each reel. This is when you're guaranteed to have the best chances to succeed.
How To Calculate Your Winning Chances
For a more precise estimation of your winning chances, you can use the mathematical formula below:
N = 100%/(Bni)
N – chances of landing a winning combination;
i – number of reels in a slot;
Bn – number of symbols on each reel.
To see how the formula works, let's take a 3-reel slot machine, with 10 symbols on each reel. For this slot, the probability of landing a combination of 3 identical symbols is 0.1% (see below).
N=100%/(10*10*10)=100*/1000=0.1%.
Note that this probability is pretty high! For a 5-reel slot, this value will be lower. Let's take a look:
N=100%/(10*10*10*10*10)=100*/1000=0.001%.
As you can see, two additional reels drastically diminish your chances of landing a 5-symbol winning combination.
What Makes 5-Reel Slots So Popular
As we just discovered, slot machines with 5 reels are less profitable for a player than their 3-reel 'colleagues.' Logically enough, this must have affected their popularity among gamblers. Why didn't that happen? The reason is pretty simple.
To make up for lower winning chances, 5-reel slot machines offer generous bonus symbols, risk games, and free spins.
Extra bonuses boost the attractiveness of the game in the eyes of players. The more paying symbols a slot features, the higher are your chances of landing a lucky combination or triggering a bonus round. As for 3-reel slots, they tend to lack special symbols and free spins.
Slots odds are the probabilities of getting a winning combination on the reels. They depend on the type of slot machine you play. Originally the odds were very easy to calculate as the only thing the players had to consider were the number of reels and the symbols used on each of the reels. As a result, the 3-reel slot machines are traditionally believed to be better for player's winning chances, and thus the more reels and symbols on them, the lower a player's advantage.
How to Calculate Odds
The odds of getting any combination on the slot reels are easy to calculate if you know the number of symbols used on each reel. Let's take a closer look at the odds and consider an example:
If you have to make a line of 3 diamonds on one payline to win the jackpot, it is most likely that each reel has only one diamond symbol on it. If the machine is a 3-reel one and there are 20 symbols on the reels, the chances of hitting this combination are:
Three Reel Slots Machine
Possible combinations on the reels: 20 x 20 x 20 = 8000. The odds of getting this combination are 1 in 8000. For a 5-reel slot machine the chances are even less: 20 x 20 x 20 x 20 x 20 = 1/ 3,200,000 (1 in 3,200,000). The slots probabilities are usually shown as a percentage, so for 3-reel and 5-reel slot machine with 20 symbols on each reel we have these probabilities:
3 Reel Slot Machine Odds Slot Machines
However, the number of symbols on the reels can differ from machine to machine, and that is why the slots odds are different. Here we look at some more examples of slot machines containing 3 and 5 reels each with different number of symbols on them - for these examples: 20, 22 and 25.
| Slot Machine Type | Number of Symbols | Number of Combinations | Odds | Probabilities |
| 3-reel | 20 | 8,000 | 1 in 8,000 | 0.0125% |
| 22 | 10,648 | 1 in 10,648 | 0.0093% | |
| 25 | 15,625 | 1 in 15,625 | 0.0064% | |
| 5-reel | 20 | 3,200,000 | 1 in 3,200,000 | 0.0003125% |
| 22 | 5,153,632 | 1 in 5,153,632 | 0.0000194% | |
| 25 | 9,765,625 | 1 in 9,765,625 | 0.00001025% |
Slots Payback Percentages
The slots payback or return is the amount of money the slot machine pays out as winnings, against the total number of credits wagered by players. The payback is always shown in percentage.
The main idea behind counting the odds in slot machines lies in understanding how the machine pays out money. Unlike what many people believe, not everything is random in a slot machine. Slots are programmed to pay out a certain percent of the money put in with each play.
For example, one machine may pay back 80% of bets while another one may pay back 91% and even 100%. This means that for every dollar put in the machine the casino takes 9 cents and pays out 91 cents. But it does not do it for every dollar put in, it just pays out explosively and this is what makes the game so great.
3 Reel Free Slots
You must remember that there are two basic types of slot machines. These are:
- Loose slots are slot machines that are programmed to return 82-98% of the wagered money, or even more if you play slots online. As a rule, high-denomination slots pay out more than those offering, for example, $0.05 or $0.25 bets. For more about typical paybacks on different slot machines please read the strategies page.
- Tight slots are machines that pay out less than 80% and sometimes down to 50% of the wagered money. To avoid playing at these slot machines try not to gamble in motels, airports, bars, gas stations, etc. The payback percentages vary from casino to casino and that is why it may be difficult to find the best machine in the gambling hall.
As you understand, one of the best slots tips on how to win at slots is always to look for the loose machines. It can be easy if the gambling hall shares this information with the visitors. In any case you can gamble on the Internet as most online casinos provide the statistic data about their slots games. So, when choosing one of the casinos recommended by SlotsDoc.com you can expect such paybacks:
