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RTP on slot machines: how does it affect your chances of winning?

Slot machines as we know them have been around since the 20th century. An integral part of any slot machine is its RTP, which determines the long-term course of the gameβ€”and, ultimately, the overall experience. If you haven’t heard this term before, be sure to keep reading; we’ll explain everything from the definition to the underlying mathematics.

What is RTP on slot machines?

The abbreviation RTP (Return to Player) is usually translated as Return to Player and is typically expressed as a percentage. It’s a fixed value, but it varies from one slot to another. RTP represents the percentage of stakes that is returned to players in winnings over the long term.

RTP Casino Flow

RTP is essentially the opposite of the casino advantage, i.e. the house edge. While the house edge tells us what portion of all player stakes the casino keeps, RTP determines what percentage of the total amount wagered is returned to the player. RTP therefore shows how much the player wins, and the house edge shows how much the casino makes.

RTP vs Volatility

Some players may confuse these two terms, but they mean completely different things. While RTP expresses the percentage of stakes that is returned to the player over the long term, volatility affects how often and how big the wins are. You can read more about volatility in the article Volatility on slot machines.

How is RTP calculated?

RTP is calculated using a mathematical formula that works out the player’s long-term theoretical return. The calculation is based on long-term monitoring of gameplay and rounds played. In the image below, you can see a simple formula that illustrates how RTP is calculated.

Neon RTP Casino Formula Banner

  • However, it’s important to remember that the statistical average RTP on slot machines is calculated over more than millions of spins. So you can’t expect the return to show up, for example, within a few hundred spins. Likewise, in the short term you can experience big wins, but also extended losing streaks.

How can you calculate the theoretical return?

If you want to calculate in advance what your potential profit or loss on a slot machine could be, you just need a simple formula. Bear in mind, though, that this is a calculation from a long-term perspective (millions of spins), so it’s not a very reliable prediction for short-term play.

Let’s look at an example on the slot machine Big Bass Bonanza Megaways.

  • Formula: stake per spin Γ— number of spins Γ— slot RTP

UK Slot RTP Calculation Infographic

Why is it good to know RTP?

It’s worth knowing RTP for several reasons. If you don’t understand what it is, you can quickly end up going down the wrong path and lose both your money and the fun.

1. Choosing the right slot

If you know what RTP means, as we explained above, it won’t be difficult to filter out β€œbad” slotsβ€”in other words, those that would simply be money pits for you. Before you start playing any slot, check its RTP.

2. A more sustainable bankroll

Once you start choosing the right games, your bankroll will thank you too, because it won’t disappear straight away. With a higher return, you can look forward to longer play and more entertainment.

How to find a slot’s RTP?

  • In the game settings

    The easiest way to find a slot’s RTP is in the settings or information menu. Simply click the settings button while playing and it should be listed there.

  • On the developer’s website

    Another option is the developer’s website. In a search engine, enter the developer’s name (Endorphina, Play’n GO, …) and go to their website. Then just find the slot you want to playβ€”its RTP should be stated in the game description.

  • In reviews of the slot

    Many gambling portals have their own slot reviews. That includes our site bonus-menu.co.uk. On these sites, you just need to find the slot you want to play and, if a review exists, check the RTP in the description.

  • Try the demo version

    If none of the previous methods worked, you can try the game yourself. Of course, we don’t mean for real money, but the free versionβ€”also known as the demo version. Play for a few minutes and you should be able to roughly estimate what the slot’s RTP might be.

    You can try many slots for free on our website.

How to tell low RTP from high RTP?

Sometimes it can be a bit tricky to work out what RTP percentage is considered high and what’s considered low. In general, it’s best to stick within the 90% – 100% range. Any slot below 90% is already extremely unfavourable for players, and you’re better off not playing it. But how do you get your bearings within the 90% – 100% range?

RTP Scale Infographic with 96.7% Marker Bonus-menu.co.uk

➀ Low RTP – less than 94%

  • For players, RTP this low is very disadvantageous. Over the long term, only a small percentage of stakes is returned to players. You’re more likely to come across it in land-based arcades.
  • Ideally, we don’t recommend playing slots like this.

➀ Below-average and average RTP – 94% – 96.5%

  • More common in older (retro) slots or slots with high volatility.
  • The average RTP for online slots generally sits around 96%. It can be seen as a kind of β€œgolden middle ground” that many developers aim for.

➀ Above-average and high RTP – 97% and above

  • Considered the fairest for players. We definitely recommend playing slots with this kind of RTP – but of course only at licensed casinos.
  • Slots with an RTP of 98% and above are generally seen as the most favourable and are also the most sought-after.

Slots with the Highest RTP in the the UK

If you are interested in specific slot games you can play yourself, look no further. In the clear table below, you can read about slots with the highest RTP that you can safely play at licensed  casinos.

Rank Slot Provider RTP
1 Mystery Joker Play’n GO 98%
2 Nebula Stars Casimi 97%
3 Wild Wild Best Casimi 97%
4 Big Bass Bonanza Megawaysβ„’ Pragmatic Play 96.7%
5 Big Bass Christmas Bashβ„’ Pragmatic Play 96.7%
6 Aladdin’s Treasure Pragmatic Play 96.58%
7 5 Frozen Charms Megawaysβ„’ Pragmatic Play 96.53%
8 Hugo 2 Play’n GO 96.53%
9 Big Bass Floats My Boat Pragmatic Play 96.52%

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Mystery Joker

98 %

How do we rate slot machines?

We evaluate slot machines based on multiple criteria, from which we make our final verdict.

Design and theme
97 %
Features and playability
98 %
RTP and volatility
97 %

Nebula Stars

96 %

How do we rate slot machines?

We evaluate slot machines based on multiple criteria, from which we make our final verdict.

Design and theme
96 %
Features and playability
95 %
RTP and volatility
97 %

Wild Wild Best

95 %

How do we rate slot machines?

We evaluate slot machines based on multiple criteria, from which we make our final verdict.

Design and theme
95 %
Features and playability
94 %
RTP and volatility
97 %

Big Bass Bonanza Megawaysβ„’

96 %

How do we rate slot machines?

We evaluate slot machines based on multiple criteria, from which we make our final verdict.

Design and theme
99 %
Features and playability
95 %
RTP and volatility
96.7 %

Big Bass Christmas Bashβ„’

95 %

How do we rate slot machines?

We evaluate slot machines based on multiple criteria, from which we make our final verdict.

Design and theme
94 %
Features and playability
95 %
RTP and volatility
96.7 %

Aladdin’s Treasure

95 %

How do we rate slot machines?

We evaluate slot machines based on multiple criteria, from which we make our final verdict.

Design and theme
93 %
Features and playability
96 %
RTP and volatility
96.58 %

5 Frozen Charms Megawaysβ„’

96 %

How do we rate slot machines?

We evaluate slot machines based on multiple criteria, from which we make our final verdict.

Design and theme
96 %
Features and playability
97 %
RTP and volatility
96.53 %

Hugo 2

96 %

How do we rate slot machines?

We evaluate slot machines based on multiple criteria, from which we make our final verdict.

Design and theme
97 %
Features and playability
95 %
RTP and volatility
96.53 %

Big Bass Floats My Boat

96 %

How do we rate slot machines?

We evaluate slot machines based on multiple criteria, from which we make our final verdict.

Design and theme
99 %
Features and playability
95 %
RTP and volatility
96 %

Who sets the RTP percentage?

One of the most common questions players ask is β€œWho can determine the RTP level?” Or whether it can be influenced at all, and who has the final say? There’s a simple answer to that.

The RTP of a slot is set solely by the game developers of the game itself. Players have no way to influence the RTP percentage in any way. The only situation where RTP can be adjusted is when the manufacturer sets an RTP range. From this range, the casino can then choose which version it will run.

What does it mean when RTP is shown as a range?

The only way you’ll have come across where a casino can influence RTP is when the developers themselves allow it. In the slot information, you may have noticed that RTP is sometimes listed as e.g. 96% – 98%. This means the slot doesn’t have a fixed RTP, but offers multiple versions. The casino can then choose from these versions before launching the game on its site.

  • The developer set an RTP range of 96% – 98%. If a casino chooses, for example, 97%, players there will be able to play this slot with an RTP of 97%. Likewise, another casino may choose a lower or, conversely, a higher percentage.

However, the RTP can be selected only by the casino (not players), and only if the developers allow it. Once the casino has made its choice of which version it wants to run, it can’t change it afterwards.

Myths about RTP on slot machines

RTP is a very important factor that every player should pay attention to when playing slots. However, it’s a clearly defined factor and, like everything around slots, it can’t be influenced in any way. Even so, many people have misconceptions about it or believe things that simply aren’t true.

Conclusion

RTP on slot machines can be summed up as one of the most important indicators of return, and it is always fixed. In short, the higher its value, the greater the chance of getting more of your stakes back over the long run. Don’t forget, though, that long-term return doesn’t mean just a few hundred spins. Even so, knowing the RTP of a given slot is very important.

You should also focus on volatility, which is often confused with RTP. We’ve already explained the differences between RTP and volatility, so you’ll know that it’s worth understanding both for the best gaming experience and a better chance of winning.

Always keep in mind that even though RTP can help you choose the right slot, it will never guarantee a win. All slot machines are based on randomness, and no strategies or tactics can change thatβ€”so it’s important to play responsibly.

Try RTP on our slots for free too

What better way to test your newly gained knowledge than (almost) in practice. On our free slots, you can try different slots with the lowest and highest available RTP. All completely free, with no registration required and using virtual money only.

Try slots with the lowest RTP so you’ll know what to avoid in the future

5 Potions+

89 %

How do we rate slot machines?

We evaluate slot machines based on multiple criteria, from which we make our final verdict.

Design and theme
95 %
Features and playability
80 %
RTP and volatility
94.58 %

81 Vegas Magic

94 %

How do we rate slot machines?

We evaluate slot machines based on multiple criteria, from which we make our final verdict.

Design and theme
94 %
Features and playability
94 %
RTP and volatility
95 %

Simply The Best 81

95 %

How do we rate slot machines?

We evaluate slot machines based on multiple criteria, from which we make our final verdict.

Design and theme
94 %
Features and playability
96 %
RTP and volatility
95 %

Try slots with an Average RTP

Fruit Super Nova 80

75 %

How do we rate slot machines?

We evaluate slot machines based on multiple criteria, from which we make our final verdict.

Design and theme
70 %
Features and playability
75 %
RTP and volatility
95 %

Hot Hot 20

82 %

How do we rate slot machines?

We evaluate slot machines based on multiple criteria, from which we make our final verdict.

Design and theme
78 %
Features and playability
73 %
RTP and volatility
96 %

Book of Vlad

85 %

How do we rate slot machines?

We evaluate slot machines based on multiple criteria, from which we make our final verdict.

Design and theme
85 %
Features and playability
80 %
RTP and volatility
96 %

FAQ – Most common questions and answers

  • 1️⃣ What is RTP on slot machines?

    It’s a fixed value (expressed as a percentage) that represents the percentage of stakes that is returned to the player in winnings over the long term.

  • 2️⃣ Does RTP affect your chances of winning?

    RTP tells you how much of your stakes you’ll get back in the long run. However, it doesn’t tell you if you’ll win and how much on each spin. That’s what volatility is forβ€”it can at least give you a theoretical idea of that probability.

  • 3️⃣ What RTP value is good?

    In general, it’s a good idea to look for slots with RTP higher than 90%. Ideally, play slots with 95% or more, as they are the most favourable for players.

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The overall bonus rating is determined based on several factors: the amount of the bonus, the company's rating, the ease of obtaining it, the players' rating and the conditions for obtaining the bonus.

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How do we rate bonuses?

The overall bonus rating is determined based on several factors: the amount of the bonus, the company's rating, the ease of obtaining it, the players' rating and the conditions for obtaining the bonus.

Total bonus amount
90 %
Easy to reach
93 %
Bonus conditions
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The overall bonus rating is determined based on several factors: the amount of the bonus, the company's rating, the ease of obtaining it, the players' rating and the conditions for obtaining the bonus.

Total bonus amount
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