Slot Machine Jackpot Odds

If you thought winning at online slots was about slamming the 'Spin' button, crossing your fingers, and hoping for the best, think again.

Slot Machine Jackpot Odds Slot Machines

Slot machines with the best odds of winning. What you are looking for is a percentage figure known as the RTP, or return to player. The higher the percentage figure, the better the return. For example, slot machine odds of 97% indicate that, in theory at least, you will get back $97 for every $100 you spend. Of course, you would need to sit at. Some times of day are better than others. This isn’t true. Casinos aren’t able to reprogram the. On any slot machine, winning odds can be maximized with a few simple steps: make a ‘game budget,’ and stick to it.Don’t deposit more than your budget. If you can afford to lose $100 dollars, then don’t deposit more than that, and once it’s gone, quit.

It's important to have even a basic understanding of the odds involved in slots if you're going to choose the right game and have a profitable slots life.

Today's video slots are hugely complicated and well-crafted beasts, and while that means they're safer than ever, it also means they're harder to predict.

Random Number Generators

Once upon a time, slot machines were mechanical behemoths powered by mechanisms that fixed the various combinations that the slot landed on.

Today's video slots, however, are powered by microprocessors (and programs in online slots) called Random Number Generators.

RNGs are formulae programmed into the games which generate random numbers (or arrangements of symbols) as the reels fall.

Any good online casino will have its RNGs audited by an independent body like eCOGRA or TST regularly for fairness. Software developers themselves are also audited before they can be given out gaming licences to operate.

Slot Par Sheets

Every new online slots has a 'par sheet', a blueprint for the payouts and permutations that goes into the game.

On a typical par sheet you'll find a list of the symbols featured on each reel and the quantity. The number of symbols on each reel varies wildly from one slot to another, and that's what can affect the payouts.

Where one game has 30 symbols on a reel, for example, another may have over 200; that can result in many more thousands of possible winning (or losing) combinations.

Par sheets will also list jackpot totals and how many spins are typically needed to hit a jackpot. Remember, though, this doesn't mean a slot is fixed; the reels still spin at random and independently of each other.

Payouts and Combinations

While it's not necessary to calculate every odds in a slot, it's a good idea to have a rough idea of how often a three-symbol combination hits.

The chance of you hitting a winner is related to the amount of reels in the slot and the number of icons on each of the reels.

Let's take a classic 3-reel slot. With three reels, and 20 symbols on each reel, the odds of hitting one exact symbol is 20/1, or 1 in 20. If it's 20/1 to hit one symbol, then it's 20x20x20 = 1 in 8,000 to hit a combination of three symbols; or, there are 8,000 possible combos.

Now let's say you're looking to hit a jackpot with special bonus symbols. There's just one of those on each reel, so the chance of hitting the jackpot is 1/8,000. If you have four jackpot symbols on each reel, your chances of hitting a winning combo drastically lower to 4/20 x 4/20 x 4/20 = 12 / 8,000 = 1 in 666.

But most online slots have five reels, which puts the possible combinations into the millions.

Understanding RTP (Return to Player Percentages)

Every slot is designed to pay back a certain percentage of bets to players over the long term. These Return to Player Percentages (RTP%) vary from game to game, and are theoretical. In addition, the RTPs are usually calculated over a very long-term period of betting.

Remember that slots spins are random, but odds are programmed into slots depending on the number and layout of symbols on the reels.

Many online casinos and developers list their RTPs. You'll even find them tucked away in the slot Paytable. Online slots tend to have better RTPs than their land-based cousins (ranging from 85% in a live casino to up to 97% in an online casino), and it's a good idea to get used to which slots offer the best long-term payouts.

Volatility in Slots

You'll sometimes hear slots referred to by their volatility.

Essentially, high-volatility or volatile slots carry a higher risk to your bankroll. You might go a long period without winning a penny, then hit a big jackpot.

On the reverse, low-volatility slots offer plenty of frequent, smaller wins. You might not hit a big jackpot as with a volatile slot, but they're better on your wallet - and your heart!

For action junkies looking for the big win, high-volatility slots offer lots of action but you'll need to weather the variance (swings in bad and good luck).

For an easy way to work out if a slot is volatile, head to the paytable. Every slot has one that lists the various payouts and jackpots. If there seems to be a lot of mega jackpots in the game, it's probably high-volatility.

Slot Machine Jackpot Videos

Volatility is a personal preference at the end of the day. If you can handle the barren periods but want to hit that once-in-a-hundred-spins jackpot, choose a high-volatility slot. If you prefer a small win every couple of spins, a low-volatility game is for you.

Slot Machine Jackpot Odds

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Whether you're into 3-reel slots that keep you spinning and spinning until you hit a win, or you love the frequent small wins of a low-volatility slot, we have games for you.

At, we offer UK players hundreds of free-play slots so you can test out the games, check the RTPs and see if that bonus feature really is as random as it seems.

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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:

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:

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 TypeNumber of SymbolsNumber of CombinationsOddsProbabilities
3-reel208,0001 in 8,0000.0125%
2210,6481 in 10,6480.0093%
2515,6251 in 15,6250.0064%
5-reel203,200,0001 in 3,200,0000.0003125%
225,153,6321 in 5,153,6320.0000194%
259,765,6251 in 9,765,6250.00001025%

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.

Huge Slot Machine Jackpots

You must remember that there are two basic types of slot machines. These are:

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Slot Machines Odds Of Winning

  • 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.

Slot Machine Jackpot Odds Slot Machine

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Odds Of Winning Slot Machine Jackpot

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 you can expect such paybacks: