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Best and Highest RTP Slots in 2024

RTP slots hunters in UK and around the world can find out the best ones with our help. Veterans of the game know exactly how hard it is to find a good one. If you don’t want to waste hours on end browsing for the highest payout slot machines on your own, our detailed review of the best RTP slot games and slots with the best odds will get you exactly what you need.

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What is RTP in Slots and How it is Calculated

RTP is short for “Return to Player”. This is actually the percentage of the amount of funds that online slot machines can pay users during a certain period of time. The process of calculating is rather simple.

For instance, if you wager £2 and get back 1.90, it means that a certain slot game’s RTP is 95%. We suggest checking the RTP rate for each game you plan to play by searching for its characteristics on the web.


RTP is an average pay-out measure, always below 100%, reflecting the house’s advantage. It doesn’t guarantee wins as they depend on luck and chance. RTP is subject to change, so always visit the official operator’s website for the latest information.

Top 11 Best RTP Slots in 2024

We went through hundreds of slot games and came up with a definite list of only the best online slot machines. Our criteria were high during our search and there was room only for the best.

11 Best and Highest RTP Slots

Knowing exactly which are the high RTP slots can largely influence your wagering experience. It will also cut your search time in half when you know where to look. We propose checking out some of these.

Book of 99 (RTP: 99.00%)

  • Offers an autoplay option.
  • Includes Wild Symbols.
  • Offers the possibility of getting 10 Free Spins.
  • Includes 5 reels, 3 rows and 10 fixed paylines.

Book of 99 is actually a recent release. It came out in 2021 and quickly became one of the most popular games among slot enthusiasts in UK. Relax Gaming takes credit as its creator, taking players to Ancient Greece.

The historical theme is nothing to write home about and the game is pretty standard. However, the attractive part comes with its high RTP and getting potential winnings of 5000x than your initial bet. You can come across this game on sites like PokerStars and LeoVegas.

Book of 99 slot by Relax Gaming

Mega Joker (RTP: 99.00%)

  • Very easy and simple to play.
  • Doesn’t have a Free Spins bonus round.
  • Comes with low betting limits.
  • No multipliers.

Mega Joker is a veteran entry on our list, having been released in 2011. It was created by NetEnt and even with its classic style still has the capability to draw in users thanks to its amazing features.

Mega Joker is a fine example where one does not need complexity to draw in a crowd. 3 reels, 3 rows and 5 paylines are more than enough and a betting range for between $0.1 and $1. If you care to try it, it is available at NY spins, Grosvenor Casino, and Videoslots Casino.

Mega Joker slot by NetEnt

1429 Uncharted Seas (RTP: 98.60%)

  • Two exciting bonus features – Expanding Wilds and a Free Spins Bonus.
  • 10, 20 or 50 Free Spins with Retriggers.
  • Awesome artwork combined with even better sound.
  • Comes with a top payout of 670x.

This slot game takes us back to 1429 and sets us on a course across the seas. Even though 1429 Uncharted Seas has a slightly smaller RTP than the ones mentioned before, it still ranks among higher RTP games.

The game was developed by Thunderkick in 2016. It comes with a 25-payline feature, and a betting range of €0.10 to €100, which does make it attractive to play. Available to play at Unibet and Videoslots Casino.

1429 Uncharted Seas slot by Thunderkick

Marching Legions (RTP: 98.12%)

  • Thrilling gameplay.
  • 5 reels, 3 rows and 243 ways to win.
  • Play from 10p to £100 per spin

The brand behind this very fun and entertaining game is Relax Gaming. Released in 2020, Marching Legions is a top slots online game that you can play with operators like NY spins and Betvictor casino.

It comes with a high variance and 243 ways of winning. Actually, the most that you can win is 7,458x of your total stake. The Roman theme is nothing new, but the gameplay overshadows the unimpressive design.

Marching Legions slot by Relax Gaming

Blood Suckers (RTP: 98.00%)

  • Oldie but goldie.
  • 3x multiplier in free spins.
  • One of NetEnt’s most popular games of all time.
  • Low volatility.

Another horror-inspired game, Blood Suckers was developed by the veterans in the game, NetEnt. The game was released in 2009 and does features dated graphics. Nevertheless, still one of the highest RTP slot machines in the game, making it attractive to players.

It is comprised of 5 reels, 3 rows and 25 paylines and you can play it for from 25p to £50 per spin. An autoplay function also exists, which allows for 1,000 autospins. You can find and play this game on sites like HeySpin, 10bet, and Videoslots casino. 

Blood Suckers by NetEnt

Jokerizer (RTP: 98.00%)

  • A very exciting and unique Jokerizer mode.
  • Very mobile friendly.
  • No Free Spins or jackpots.
  • High dispersion and x1200 win potential.

Developing some of the best payout online slots is not an uncommon thing for Yggdrasil. One of them is their 2016 release, Jokerizer. The theme of a card deck is a familiar one, but still effective.

It consists of 5 reels and 10 paylines, with the prizes going up towards 6,000 coins if we include Jokerizer mode and mystery wins. Brands such as Unibet and Videoslots casino are some of the best places where to find this game.

Jokerizer slot by Yggdrasil

Zeus Lightning: Power Reels (RTP: 97.73%)

  • Expanding Zeus Lightning wilds.
  • Free Spins come with Zeus Lightning wilds and a symbol upgrade.
  • High volatility.
  • Max bet at £20.

Zeus Lighting is a colourful and interesting game with an RTP rate of 97.73%. It first appeared on the horizon in 2020 and was created by the Red Tiger Gaming Company. 

It was created with an ambitious 7-reel slot and 30 paylines. A high volatility game with max payouts of 4500x your bet, it is a game more suitable for veteran players. Those who want it, have it at William Hill and Coral casino.

Zeus Lightning Power Reels slot by Red Tiger

Golden Tour (RTP: 97.71%)

  • £0.05 – £25 bettng range.
  • 2000 coins max win.
  • Golden Tour Bonus feature available.
  • Licensed and regulated in 20 jurisdictions.

Olden Tour is already ten years old, having been released in 2012 by Playtech. A golf theme and Its greenish interface provide a very lively experience for players. It is a simpler kind of game with only 5 paylines, but win lines that go left-to-right or right-to-left.

It offers such features as Autoplay, Wild Symbols, Scatter Symbols and a 2000 credit Jackpot. You can find it on Betfair or Betfred.

Golden Tour slot by Playtech

Blood Suckers Megaways (RTP: 97.66%)

  • 20,521.9 x bet max wins.
  • Many different bonuses available.
  • High volatility.
  • A lot of paylines.

Blood Suckers Mewagays follows the path paved by its predecessors, the original Blood Suckers (2009) and Blood Suckers 2 (2017). This one is actually developed by Red Tiger Gaming and came to us in January 2023. Besides loads of blood and sharp teeth, it features updated graphics and flashier images.

One of the best RTP slots as of late, it contains 6 reels with up to 117,649 ways to win, as well as 4 random base game features. There are also Super Wild reels with multipliers up to 7x and a multiplier up to 5x. Find the game with NY spins or William Hill casino. 

Blood Suckers Megaways slot by Red Tiger

Rainbow Riches Pick n Mix  (RTP: 96.00%)

  • Very exciting bonus features.
  • Choose your own RTP.
  • A fun slot game to play based on a classic brand.
  • Ability to choose your own bonus.

Barcrest is the company behind Rainbow Riches Pick n Mix, which released this game back in 2016. It is actually a sequel to the now-famous Rainbow Riches slot game, except this one is a roided-up version of it.

It is an advanced game and definitely not for beginners. However, it does not require a lot of strategizing. Simply press spin and see what the outcome is. It includes a set of 3×3 reels and comes with 5 different bonus features that you can pick before spinning. You can get your hands on it at Coral and Grosvenor casino.

Rainbow Riches Pick n Mix slot by Barcrest

Jackpot 6000 (RTP: 95.00%)

  • Comes with a great mobile version, “Jackpot 6000 Touch.”
  • Very easy and understandable gameplay.
  • 3 reels with 6 symbols on 3 rows.
  • No Free Bonus round.

Another NetEnt entry, Jackpot 6000 might be a classic but is among the most popular games ever created by this game developer. It was released all the way back in 2011, and ever since then offers a versatile wagering experience for its users.

What makes this game fun to play are all the old-school motifs which create a nostalgic feeling every time you turn it on. Besides the sentimental atmosphere, a high RTP and potential max winnings of 6,000 credits do make this game very attractive. Play it with HeySpin and LeoVegas.

Jackpot 6000 slot by NetEnt

The Method We Use to Evaluate (or Review) the Best Online RTP Slots

When estimating the best payout online slots, we take into account various factors beyond just the RTP rate, as understanding the exact method involved in selecting the right RTP slots requires consideration of other important aspects within the fallowing formula:

RTP Rate Value

This is one of the first things we take a look at when selecting the best casino slot game, where the higher the RTP rate is, the better it is for you.

Volatility and Variance

Yet another important factor to know about, volatility and variance are related to the frequency and amount of winnings, as well as to different RTPs in the short or long run.

Software Developers

Picking a good slot provider is always important because it provides an interesting and safe wagering experience.

game pad

Graphics and Gameplay

It is good to have graphics that are visually appealing, along with diverse and interesting gameplay at your disposal when playing the highest RTP slot games.

Betting Range

You may find it useful to be able to place small stake amount bets alongside placing high amount bets when you’re ready to do so.

User Friendliness

Mobile Friendliness

Games that are mobile-friendly are more popular and versatile, so we also evaluated the best slot apps as one of the main factors that provide users with a high-quality experience.

Online Casinos With Highest Slot Payouts – Our Pick

You don’t need to search extensively for an operator with RTP slots, you can simply view our picks and find them there.

Top Pick by Our Editors
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                                    Our Final Verdict on the Best RTP Slots in 2024

                                    All in all, picking the best RTP slots may not be difficult at all. All you need to do is follow our quick guide, and you’ll find the best slots to play at casino in no time.

                                    Some of the main elements to bear in mind when choosing the best winning slots include graphics, gameplay, mobile friendliness, and of course, RTP rate value, along with volatility and variance.

                                    Some of the best online slot games to win are Mega Joker, Book of 99, 1429 Uncharted Seas, Marching Legions, and Jokerizer, to name a few. We recommend that you check the entire list that we made in this review, as well as take a look at some of our other reviews related to RTPs and discover details about this.

                                    FAQ for the Best RTP Slots

                                    Here, you can read the most common questions and answers concerning the best RTP slots, slots with best odds and RTP gambling.

                                    The best RTP slots are online games with the highest return rates, which also boast great graphics, gameplay, and wagering style. Some of the most popular ones include Ooh Aah Dracula, Mega Joker, The Catfather, Golden Tour, etc.

                                    There can be different percentages and numbers for different slots. However, some of the best slots usually include RTP percentages higher than 95%. Even more, there are best bonus games slots with RTPs ranging from 96% to 99%.

                                    Simply put, it is. High RTP means more potential winnings. Still, you may also need to pay attention to other factors like gameplay, wagering style, mobile friendliness, and graphics when choosing a slot game.

                                    As far as we know, the highest RTP for a game is 99.00%. RTPs such as this one allow you to have a comfortable wagering experience.

                                    Some of the best online casino slots with the highest RTPs are Mega Joker, Book of 99, 1429 Uncharted Seas, Blood Suckers, and many others. You can check our entire list of the best online slots payout percentage games in one of the sections above.

                                    Calculating RTP is simple. You can always assume that you will wager £1 on a game. If you get, let’s say, £0.97 back, it means that the RTP of that game is 97%.

                                    You can find RTP for slots on the web. What you need to do is search for the game name on the Internet and use “RTP” as one of the keywords for your search.

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