Best RTP Slots UK - High Paying Slot Games October 2025

The RTP (Return to Player) is another way of determining the theoretical house edge. If a game has a 96% RTP, then it has a 4% house edge. This is the expected return over the long term. If you wager £100 on a slot game with a 96% RTP, then you can expect £96 back for every £100 wagered, over the long term, of course. The RTP is set by the gaming providers, and not the casino operator. As a rule of thumb, you should seek games with higher RTPs because these games have lower house edges.

Additionally, the UKGC requires the gaming providers to guarantee the integrity of the RTP of each game. This means the games go through rigorous testing with casino operators collaborating with independent game auditors to carry out further tests on the high RTP slots UK.

It’s important to note that the RTP is worked out over an infinite number of spins, so the volatility means you can hit wins and losses in the short term that are far from the game’s RTP figure.

The games on our site with the highest RTP:

It’s worth mentioning that the gaming providers can offer up to 3 different RTP settings for the games. This allows the casino operator the option to reduce or increase the RTP. If a casino does not publish the RTP, then it may be lower than expected. Here are some of the best RTP slots UK.

Mega Joker

Provider: NetEnt

Mega Joker is a progressive jackpot slot that has stood the test of time. The game has a medium to high volatility with just 3 rows and 5 fixed paylines. The game has a max win amount of 2,000x your bet. However, it’s the progressive jackpot prize that is the main attraction.  

The game has a retro appearance with the game set on an old-school slot machine, also affectionately known as a ‘one-armed bandit’. The symbols are made up of lemons, cherries, bells, and other classic slot symbols.  

Mega Joker is one of the highest RTP slots available, but you have to keep in mind that this RTP only applies if you play with maximum 10-coin bets. If you play just 1 coin per spin, the RTP drops to 76.9%. 

Dead or Alive 2

Provider: NetEnt

Dead or Alive 2 is a sequel to its mega-popular predecessor. The game is played on 5 reels and 3 rows with 9 fixed paylines. There are some bonus extras in the form of multiple free spin features, Scatter Wins, and Sticky Wilds. The bet ranges are suited to those with casual budgets.  

The game is set in the Wild West with some cowboy characters having a showdown in a bustling saloon. The symbols are made up of cowboy boots, a sheriff's badge, guns, and other western symbols. 

The game has a 96.82% RTP, which is a notch above the 96% average. The high volatility game also boasts a huge max with an amount of 111,111.11x your bet.

Gonzo’s Quest

Provider: NetEnt

Gonzo's Quest from NetEnt has earned legendary slot status in the industry. The game has a reel structure that stands out with cascading wins. The game is packed with rewarding extras too, including scatters, free spins, wilds, and more.

The slot has a captivating adventure theme that sees Gonzo the explorer on a search for ancient Mayan riches. The reels are set in an ancient temple with ancient artefacts and coins making up the symbols.

RTP: The game has a 96% RTP with a medium to high volatility, paying up to 3750x your bet.

Twin Spin

Provider: NetEnt

Twin Spin from NetEnt was released in 2013 and still remains a popular choice amongst slot enthusiasts. The game is set on 5 reels with 243 ways to win. The game focuses on the Twin Reel feature, which sees reels link/sync and display the same symbols, offering wins up to 1,000x your stake.  

This game has a simple retro theme, with colourful and visually pleasing symbols, made up of diamonds, numbers, and card symbols.  

The game has a 96.55% RTP with medium volatility.

Fruit Party

Studio: Pragmatic Play

Fruit Party is a slot packed with juicy extras, with Tumbling reels, random multipliers up to 256x, free spins and top payouts of 5,000x your bet. The game takes place on a 7×7 reel grid where winning symbols are removed and replaced with new symbols for the potential to hit another winning combo.

Fruit Party is a colourful and visually vibrant game with strawberries, apples, grapes, and other fruits making up the symbols.

The game has a 96.50 RTP with a high variance rating, which means the wins are less frequent but bigger.

Sweet Bonanza

Studio: Pragmatic Play

Sweet Bonanza is considered one of the best RTP slots UK games, with wins as much as 21,175 x your stake. The game is played on 6 reels with an all-ways machine and tumbling reels. There are some awesome features too, including free spins, multipliers and more.

The game is set in a colourful candy land that is bursting with colour. The game’s symbols are made up of various fruits and candies.

The slot has a 96.51% RTP with a high volatility rating.

Starburst 

Provider: NetEnt

The Starburst slot is one of the most played online slot games of all time. The NetEnt title is played on 5 reels and 3 rows, with a betting range suited to casual players. The game has wilds that land on the middle reels and can expand for re-spins with huge win potential.

The game has plenty of visual appeal thanks to its stunning graphics and colour scheme. The reels have an arcade style with the symbols made up of different coloured stars, not to mention awesome animations.

The RTP stands at 96.09% with low volatility, so plenty of small wins are to be expected until the game’s only bonus feature is in play.

5 Lions Megaways

Provider: Pragmatic Play 

5 Lions Megaways is set on 6 reels where the number of ways to win can reach 117,649 on any spin. The game also has tumbling reels and wild multipliers that can boost payouts up to 40x. The Free Spins bonus feature serves up free spins and wild multiplier combinations.  

The game has an oriental theme that takes you on a virtual trip to see some Asian culture with Chinese dragons, coy fish, and lions on the reels.  

5 Lions Megaways has a 96.5% RTP and high volatility.

The RTP (Return to Player) is simply the expected wager percentage returned to the player over the long term. This RTP percentage is worked out over thousands of bets before working out the average return against the amount wagered. This gives you the theoretical RTP, which is the long-term result, not the result of individual betting sessions.

The best RTP slots use an RNG (Random Number Generator) that randomises the results. This is a computerised engine that ensures every betting result is completely random. It’s worth noting that this engine is subject to strict testing to ensure it passes the UKGC auditing requirements. All virtual games use an RNG, whereas live and land-based tables like Blackjack do not use an RNG engine, but rather a card shuffler.

The RTP is not the same across casino games, but some of the best RTP slots UK games are more favourable than others. Generally, games with an RTP of 94% or less are considered low, while the average game sits around 95-96% and those with 96.5% are considered high, and anything above 98% is excellent.

Most online casino games, especially slot machines, have an RTP around 94-97%, with 96% being the most common. Although you can find the highest RTP slots, it does not mean these games are going to be more profitable than games with a lower RTP. There is never a guarantee because volatility has an influence on the results.

The RTP is there to provide a statistical indication of what to expect over long-term play. The slots with highest RTP can have less win frequency for bigger payouts. Lastly, it’s important to remember that all results are completely random.

The game providers often have RTP ranges for their gaming content, with some gaming providers offering more favourable RTPs than others. Here’s a breakdown of the expected RTP range by the provider.

These gaming providers are highly reputable and stand as some of the biggest studios in gambling. The gaming providers are licensed and certified for fairness. Additionally, we'll only give you the UK online casino list that features the highest RTP slots UK that are UKGC-compliant.

Many casino players confuse the RTP with the volatility, but these are very different, and the volatility, also known as variance, is worth knowing about. The volatility can be low, medium, high, or very high.

A game with low volatility usually means you can expect frequent wins, but the wins are mostly small. With a high or very high volatility game, the wins are less frequent, but the wins that do hit are much larger in size.

Many of the best RTP slots UK games come with the same RTP, but the volatility will be different across the slot machines, which means the levels of risk are different. When you pick your casino games, you should balance the RTP with volatility preference.

The RTP percentage is not just a vague estimate. The percentage is determined after endless testing. Once the gaming provider has set the RTP, it then goes through a second round of testing from third-party auditing services like eCOGRA or iTech Lab.

These services run more tests to guarantee the integrity of the slots. If the RTP is higher than advertised, it can have a serious impact on the casino's revenue, whereas if it’s lower than advertised, it will have a detrimental impact on the player's bankroll. If the RTP is found to be different from what’s advertised, then the casino operator and the gaming provider could be subject to a huge fine, or even at risk of losing the gaming license altogether.

The UK Gambling Commission requires complete transparency on the RTP from all regulated operators. Any false RTP is a serious breach of the UK gambling regulations.

As mentioned before, there are many casino slots with multiple RTP settings, and these are changed based on jurisdiction or the preference of the casino operator.

Playing slots with high RTP and other online casino games should always be considered a form of entertainment, and never a form of income. Placing real money bets always comes with a level of risk. It’s always a good idea to take advantage of the casinos' responsible gambling tools, such as the deposit and wager limits. This will encourage you to stay within your budget. You can find out more information on responsible gaming at BeGambleAware.org.

You must be over 18+ to play and remember the casino's Terms and Conditions apply. Furthermore, the RTP figures are provided by licensed game developers, and not the casino operator.