Slots RTP: Which Slot Games Pay Out the Best?

The payout percentage is a cornerstone metric of the best RTP slots. Take a look at our list of the top 10 highest RTP slots online.
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Last Updated on 7 Apr 2022 by Chief Editor Keira Miller

The Best RTP Slots in the UK for 2022

Top RTP Slots RTP Rate Software Variance Best Casino Overall Rating Secure Link
Goblin’s Cave 99.32% Playtech Low Mansion 4.6/5.0 Try Here!
Ugga Bugga 99.07% Playtech Low Mansion 4.4/5.0 Try Here!
Mega Joker 99.00% NetEnt Medium LeoVegas 4.5/5.0 Try Here!
Jackpot 6000 98.90% NetEnt High Mr. Green 4.5/5.0 Try Here!
Starmania 97.87% NextGen Low Casumo 4.5/5.0 Try Here!
Couch Potato 97.43% Microgaming High Ladbrokes 4.5/5.0 Try Here!
Alchemist’s Lab 97.32% Playtech Medium Ladbrokes 4.4/5.0 Try Here!
Zombies 97.20% NetEnt Medium Casumo 4.7/5.0 Try Here!
Neptune’s Kingdom 97.19% Playtech High Mansion 4.2/5.0 Try Here!
Funky Monkey 97.15% Playtech Medium Ladbrokes 4.4/5.0 Try Here!

The Top 10 Highest RTP Slots Online

  1. Goblin’s Cave (Best RTP Slot by Playtech)
  2. Ugga Bugga (Great High RTP Slot Online)
  3. Mega Joker (Best Return to Player NetEnt Slot)
  4. Jackpot 6000 (Top Slot for Low Limit Wagering)
  5. Starmania (Great Max Bonus Spins NextGen Slot)
  6. Couch Potato (Highest RTP Slot by Microgaming)
  7. Alchemist’s Lab (Excellent First Deposit Max Bet Win)
  8. Zombies (Best RTP Slot for Free Spins Round)
  9. Neptune’s Kingdom (Great for Deposit Bonus Wagering)
  10. Funky Monkey (Top-Rated High RTP Oldschool Theme)

Overview of the Top 10 Best RTP Slots

🔝 Highest RTP Slot Goblin’s Cave
🥇 Best Playtech RTP Slot Ugga Bugga
🔥 Best Netent RTP Slot Mega Joker
👑 Highest RTP Microgaming Slot Couch Potato
🏆 Highest RTP Playtech Slot Ugga Bugga
🆓 High RTP Slot with Free Spins Zombies

Looking for the best RTP slots is quite a hassle – most casinos do list it, but don’t give you the option to rank the games according to it. Many experienced players also have certain preferences towards the software studio that has provided the game. NetEnt, Microgaming and Playtech are the most recognisable and trusted brands, but there are also niche studios that have some hidden gems.

However, to be sure in the RTP that is published, it is important to play in a licensed casino that has passed all the necessary inspections for your region. As UK players, for instance, we always check the validity of the UKGC license for the casinos that we review on our website.

Down below, you can find the highest RTP slots we have found, and the rest of our top 10 – as well as links to casinos where the RTP is verified to be genuine and provide a 100% bonus on your first deposit and the max bonus can be as much as £300.

As you can see, there are quite many oldies and even some notable titles that couldn’t make the list of high RTP slot games, such as Kings of Chicago, Blood Suckers, Book of Dead, and Rainbow Riches, despite being great headlines with bonus spins and high variance.

There are new online slots coming out constantly, and we do try to keep our listings up-to-date, but the recent trend in slot games has been towards declining RTP levels – nothing has broken into our top 10 rankings since 2015.

You should also keep in mind that the RTP isn’t the only factor you need to consider when choosing among the best payout slots online for your session. Pro slot players are definitely aware of the detailed mechanics of slot RTP, but they also check other things like the variance of the game. Low variance and high variance can be a deal-breaker when combined with the best paying slot games.

What Is RTP and Why Is It Important?

The Return to Player rate is the favourite thing of all slot players – but what does it mean, exactly? If you like to hang out in land-based casinos, then you would hear about average RTP and house edge all the time. The RTP is a theoretical value that shows what portion of the total bets made into the slot will be returned in the form of winnings. Since the RTP is an officially published value, all slot machines have to pass a strict inspection whether their RNG engine complies with these values. In all our reviews, we always dig out the return to player percentage of the games and list it clearly.

RTP Alphabetic Rating Latest Reviews Newest Slots
1198 Slot RTP Database

The RTP is the best measure of the potential profitability of a slot that we have. However, you should keep in mind that it is a long-term value – it can only be measured over a long number of spins. This means that an RTP of 98% means that for every $1000 wagered, the machine will return $980 as winnings – but over the course of a month or even longer. This doesn’t mean that this result is guaranteed over a short session of, say, 100 bonus free spins.

The RTP shows us the fine margins in our odds to win in a game. Since all slots to win real money on have to give out their portion of winnings over time, a higher Return to Player percentage indicates a bigger chance to land a winning combination. This is never a stone-clad guarantee; RNG engines nowadays are getting more and more complex.

So to predict them, we would need a tonne of data we can’t get. However, knowing the online slots with the highest RTP is the first step in successfully influencing the luck factor and improving your odds of beating the one-armed bandits! Furthermore, gathering info on whether the game is of low variance or high variance also gives us an advantage.

What Are the Good RTP Levels?

OK, so now we know that with slots RTP, higher numbers are better – but what levels constitute ‘high’? Well, as we already said, that is strongly subjective – but as a rough guideline, most slot players ignore any game with lower than the average RTP of 94-95%. Slots generally have a lower Return to Player rate than card and table games. They are more luck-based, unlike blackjack casino games which are famed for the highest RTP.

If an online slot has a theoretical RTP over 97%, then it is definitely a keeper – but as you can see from our top 10 best RTP slots list, this is not a common occurrence. There are often other things we need to consider when choosing a slot, so anything over 96% is a good compromise if you want better graphics or more exciting bonus features, free spins, and higher max bets. And you should always remember that progressive jackpot slots follow a totally different set of rules.

House Edge vs RTP – Are They Different?

Online Slot RTP vs House Edge

Mention RTP and House Edge in the same sentence, and you would confuse most casino newbies. The numbers are radically different – but they show you the same thing. In fact, the house edge is the opposite value of the RTP rate. It shows what portion of the total max bets will remain in the machine and be kept from the casino or proprietor as a profit.

For instance, if the slot has an RTP of 97%, it will give out 97% of all wagers as winnings – then the house edge should be 3%, and 3% of the max bets will remain with the casino. Most online casinos prefer to list the ratio, where you should be aiming at the highest RTP slots, but with a house edge, lower values are better. As rough guideline, anything over 5-6% should ring alarming bells in your head – unless it’s for a progressive jackpot slot.

Is Online Slot RTP the Same Everywhere?

With gamblers, there is always a niggling doubt burning in the back of their minds. Am I being cheated? With online slots fans, Return to Player rate is the measure of whether a game is fair or not. We often pick our slot games based on the publicised RTP rates, especially if there is no further data available. If the casino has passed the necessary inspections, then all games will have an accurate RTP that is published.

The casino operator will be punished by law if they advertise false RTP. Then, you have the developers having completely different strategies on the subject of RTP. Some games, like the slots of Thunderkick were naturally created with a high RTP. In contrast, others emphasise jackpots or simply are designed to have high volatility.

However, there is something you need to be aware of. Recently there was a small controversy with the Play n’Go software provider – diligent players discovered that a game could have different RTP rates at different casinos. The software studio offers several different levels for RTP, and the casino is free to choose one of them. Some of the top Pariplay casino sites also offer plenty of high RTP slots, as well as low payout titles from the same provider.

Keep in mind that the casino still has to publish the actual slots RTP of their version of the game, but some casinos make it hard for you to find them. The casinos that we list on our website have been audited by the UKGC and independent agencies as eCOGRA, so the RTP of their games has been verified and listed clearly. Furthermore, they offer 100% bonus funds on the first deposit and fair wagering requirements.

Casino Site Sign Up Offer All Slots Mobile Jackpot Rating Trusted Link
Spend £10 & Get 200 Spins + 50 Spins 500+ 300 85+
5.00 ★ out of 5 Full T&C’s apply. New customers only. Opt in required. 7 day free spin expiry. All free spins will auto play on first eligible game loaded. £10 staking requirement must be met within 30 days of opt in. Eligibility restrictions apply. 18+
100% up to £300 + 25 Bonus Spins 809 710 34
4.95 ★ out of 5 Full T&Cs apply. 18+. New players only. One bonus offer per player. Minimum deposit £20. Max bonus bet is £5. Bonus spins on selected games only and must be used within 72 hours. Bonus funds must be used within 30 days otherwise any unused bonus shall be removed. Bonus funds are 100% match up to £300 on your 1st deposit. Bonus funds are separate to Cash funds, and are subject to 35x wagering the total bonus & cash. Only bonus funds contribute towards any wagering requirements. Terms apply.
100% up to £200 + 50 Bonus Spins 530 353 20+
4.90 ★ out of 5 Full T&Cs apply. 18+. New players only. Min deposit £20. Max bonus bet £5. Bonus spins on selected game only and must be used within 72hrs. Winnings from Bonus spins credited as bonus funds and capped at £100. Bonus funds expire within 30 days. Offer is 100% bonus match up to £200 + 50 Bonus spins on your 1st deposit, and 50% bonus match up to £50 on your 2nd deposit. Bonus funds are separate to cash funds & subject to wagering requirement (35x deposit + bonus). Only bonus funds contribute towards wagering requirement. Affordability checks apply. Terms apply. Please gamble responsibly.
50 Spins + 1 Spin/£1 Deposited 750+ 350+ 50+
4.80 ★ out of 5 Full T&Cs apply. 18+. First deposit only. 50 Free Spins on the Book of Dead slot. Min deposit £10. Excl. new players in N.I. Each Free Spin valued at 10p. OJO’s Rewards and Game Play policy applies.
110 Spins When You Spend £20 600+ 600+ 1
4.70 ★ out of 5 Full T&Cs apply. First depositors only. Deposit & Stake £20 on Midnight Wilds slot game: Get 110 Bonus Spins on Midnight Wilds slot at 5p (5 lines x 1p) per spin. Jackpot cannot be won when using free spins. Customers will also be eligible for existing standard sign up bonuses if they stake an additional £10 on Bingo, see T&Cs for details. £5 min. withdrawal on winnings. 18+ Please play responsibly.

As you can see from the table above, there are no shortages of bonus spins that are often granted on your first deposit. You can get as many as 50 free spins as well as other fantastic 1st deposit bonuses with great wagering requirements at some of the operators. Admittedly, playing from the UK makes it somewhat easier for us to check the games’ reliability.

As of 1st of September 2016, the United Kingdom Gambling Commission requires all online operators to check the RTP of their games in advance and to monitor the performance of the games during real-time play. The slots at these casinos have also passed inspection by eCOGRA – you might be sick of their logo, but as we’ve said numerous times, this is the top testing house that we trust.

Other Slot Characteristics

To truly evaluate a slot game, players need a lot of data which is gathered over the course of hundreds if not thousands of spins. That’s why you can use deposit bonuses such as 50 free spins on the best payout slots for risk-free tests. Casino pros track the hit percentages and, based on that, try to determine the volatility of slot games.

The high volatility describes what result you can expect from your individual session much more correctly and gives you a better idea of how to budget your bankroll. Coupled with RTP, variance helps us pick slot titles closer to what we want. However, even then, the unpredictable nature of the RNG modules ensures that your individual session might deviate from expectations.

Progressive Jackpot RTP – Why Is It Always So Low?

If you have some basic knowledge about slot RTP, then you have probably noticed that progressive jackpot slots always have lower RTP rates than other titles, except Mega Joker which boasts an insane 99%. For instance, Mega Moolah is one of the most popular progressive slots in the world with over 100 bonus jackpot wins since its release, but it also boasts one of the worst RTP percentages you will find online. This isn’t done by coincidence, but by design.

In jackpot networks, a portion of each bet placed goes to the progressive pot, increasing the size of the grand prize. This means that the base games in progressive slots pay off worse, while the accumulated jackpot goes to a single lucky winner. In RTP terms, the jackpot is called ‘progressive contribution’ – a slot with an RTP of 91% and a progressive contribution of 5,8% will have an actual RTP of 96,8%, but 5,8% of all winnings will only be given out in the form of a jackpot prize.

What Else Do You Need to Know?

RTP is an important metric, but slots have been getting more and more complicated in recent years – or people have simply been digging more due to their increased popularity. Players are trying to understand high RTP slots and control their luck to a certain degree – well, not really, slots are notoriously luck-based, but every little edge can make a difference. If you want to learn everything there is to know about the best online slots – and some of the things you don’t really need to know – then you should take a look at the next parts of our slot article series. Furthermore, for practice purposes, there are many free slots UK players can enjoy.

Frequently Asked Questions on High RTP Slots

Within our review of the best paying online slot machines, we explained in great detail about the high volatility, the deposit bonus free spins, and other bonus features. However, we’d like to include a couple of more commonly asked questions by fellow UK players and remind you to keep an eye on the wagering requirements of the first deposit bonus offers before you claim them.

👑 Which is the highest RTP slot online?

Finding the slots with the highest RTP could be a drag. That's why we've narrowed down to the top 10 high RTP slots where the best paying is the Goblin's Cave offering the staggering 99.32% RTP. Other great payout slots include Mega Joker, Book of Dead, Kings of Chicago, Blood Scukers, and Rainbow Riches.

🎰 Where can I play the best RTP slots?

When looking for an online casino where to play the highest RTP slots, make sure that is licensed, secure, and has plenty of deposit bonus spins. For your convenience, we've collated top 5 casino sites that are 100% legit and trustworthy and offer all the best RTP slots from our catalogue with 1st deposit bonus spins and free spins round.

📈 Why are high RTP slots important?

The return to player ratio is one of the most crucial metrics of the slot machines. It shows the theoretical RTP and frequency with which the game will pay you. Therefore the higher the RTP percentage, the lower the house edge.

🧮 How to find the RTP on slots?

The return to player percentage is public information and must be listed on each game. You can easily find it from the Help button and then scroll down to the end. To learn more about the online slots RTP, check out the corresponding paragraph.

🔥 Is RTP of 97% considered high?

Yes, slots RTP of 97% or more is considered an extremely high value. Moreover, if the RTP of 97% is accompanied by high variance, your chances of locking the max bonus spins increase dramatically. Slot machines such as Mega Joker are a prime example despite having no free spins feature.

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