Players searching for high RTP casinos usually want games that offer a better theoretical return over time. RTP, or Return to Player, is shown as a percentage and indicates how much a game is expected to pay back over millions of spins or rounds. While RTP doesn’t guarantee individual results, it can be a useful way to compare casino games before playing.
This guide compares UK casinos with a strong selection of high RTP games, explains how RTP works, and highlights some of the highest RTP slots currently available. You’ll also learn how RTP compares with volatility and what those figures mean in practice.
Best High RTP Casinos Compared
| Casino | Highest RTP Games | Top Providers | Welcome Bonus | Best For |
| BetMGM Casino | Book of 99, Blood Suckers, Starburst | NetEnt, Relax Gaming, Pragmatic Play | Play £10, Get 200 Free Spins | NetEnt Slots |
| LeoVegas Casino | Book of 99, White Rabbit Megaways, Starburst | NetEnt, Relax Gaming, Play’n GO | 100% up to £100 | Game Variety |
| MrQ Casino | Blood Suckers, Mega Joker, Starburst | NetEnt, Red Tiger, Playtech | £20 Casino Bonus | No Bonus Wagering |
| BetUK Casino | Book of 99, Jackpot 6000, Blood Suckers | NetEnt, Relax Gaming, Playtech | Welcome Offer Available | High RTP Slots |
| Grosvenor Casino | Mega Joker, Book of 99, Starburst | NetEnt, Playtech | Welcome Bonus | Table Games |
| Betfred Casino | Blood Suckers, White Rabbit Megaways | NetEnt, Big Time Gaming | Bet £10, Get 50 Free Spins | Mixed Games |
| Midnite Casino | Book of 99, Starburst | Relax Gaming, NetEnt | Bet £10, Get 100 Free Spins | Modern Platform |
| BetMGM Vegas Casino | Blood Suckers, Gonzo’s Quest | NetEnt, Pragmatic Play | Play £10, Get 200 Free Spins | Slots |
| LiveScore Bet Casino | Book of 99, Jackpot 6000 | Relax Gaming, NetEnt | Bet £10, Get 100 Free Spins | Mobile Play |
| QuinnBet Casino | Mega Joker, Blood Suckers | NetEnt, Playtech | 100% up to £30 + 30 Free Spins | Classic Slots |
| Novibet Casino | White Rabbit Megaways, Book of 99 | Relax Gaming, BTG | 100% up to £100 | Megaways Games |
| BetVictor Casino | Blood Suckers, Starburst, Gonzo’s Quest | NetEnt, Playtech | Welcome Offer | Slot Variety |
| Virgin Games Casino | Mega Joker, Blood Suckers | NetEnt, Playtech | Welcome Bonus | Classic Games |
| 32Red Casino | Book of 99, White Rabbit Megaways | NetEnt, Relax Gaming | Welcome Bonus | Premium Slots |
| Unibet Casino | Jackpot 6000, Blood Suckers | NetEnt, Playtech | Welcome Bonus | RTP Selection |
UK Casinos With the Best High RTP Games
1) BetMGM Casino
UK Licence: Yes
Highest RTP Games: Book of 99 (99%), Blood Suckers (98%), Starburst (96.09%)
Software Providers: NetEnt, Relax Gaming, Pragmatic Play, Red Tiger
Welcome Bonus: Play £10, Get 200 Free Spins
BetMGM Casino offers a large selection of slots and table games from leading software providers, including several titles with RTPs above 96%. Players can access games such as Book of 99, Blood Suckers and Starburst, alongside live dealer games and jackpots. New customers can claim 200 Free Spins after placing a qualifying £10 bet, subject to the latest promotional terms.
2) LeoVegas Casino
UK Licence: Yes
Highest RTP Games: Book of 99 (99%), White Rabbit Megaways (97.77%), Starburst (96.09%)
Software Providers: NetEnt, Relax Gaming, Play’n GO, Pragmatic Play
Welcome Bonus: 100% up to £100
LeoVegas Casino features thousands of casino games from established software providers, including a strong selection of high RTP slots. Popular titles include Book of 99, White Rabbit Megaways and Starburst. New customers can claim a 100% deposit match up to £100, subject to the casino’s welcome bonus terms and qualifying deposit requirements.
3) MrQ Casino
UK Licence: Yes
Highest RTP Games: Mega Joker (99%), Blood Suckers (98%), Starburst (96.09%)
Software Providers: NetEnt, Playtech, Red Tiger, Pragmatic Play
Welcome Bonus: £20 Casino Bonus
MrQ Casino offers a wide range of online slots, live casino games and table games, including several high RTP titles from NetEnt and Playtech. Games such as Mega Joker and Blood Suckers are available alongside newer slot releases. Eligible new customers can claim the casino’s current £20 welcome bonus, subject to the latest promotional terms.
4) BetUK Casino
UK Licence: Yes
Highest RTP Games: Book of 99 (99%), Jackpot 6000 (98.86%), Blood Suckers (98%)
Software Providers: NetEnt, Playtech, Relax Gaming, Evolution
Welcome Bonus: Welcome Offer Available
BetUK Casino includes a large collection of online slots, live dealer games and classic table games from recognised providers. High RTP games such as Book of 99, Jackpot 6000 and Blood Suckers are available alongside hundreds of other slot titles. The casino regularly updates its welcome promotion, so it’s worth checking the latest offer before registering.
5) Grosvenor Casino
UK Licence: Yes
Highest RTP Games: Mega Joker (99%), Book of 99 (99%), Starburst (96.09%)
Software Providers: NetEnt, Playtech, Evolution, Games Global
Welcome Bonus: Welcome Bonus Available
Grosvenor Casino combines online slots, live dealer games and classic casino games from established software providers. Players can access high RTP titles including Mega Joker, Book of 99 and Starburst, together with a broad selection of roulette, blackjack and baccarat games. New customers may be eligible for the current welcome offer, subject to the latest promotional terms.
6) Betfred Casino
UK Licence: Yes
Highest RTP Games: Blood Suckers (98%), White Rabbit Megaways (97.77%), Starburst (96.09%)
Software Providers: NetEnt, Big Time Gaming, Playtech, Pragmatic Play
Welcome Bonus: Bet £10, Get 50 Free Spins
Betfred Casino offers a mix of online slots, jackpots, live casino games and table games from leading software providers. High RTP games include Blood Suckers, White Rabbit Megaways and Starburst. New customers can claim 50 Free Spins after placing a qualifying £10 bet, subject to the casino’s current welcome bonus terms.
7) Midnite Casino
UK Licence: Yes
Highest RTP Games: Book of 99 (99%), Starburst (96.09%), Gonzo’s Quest (96%)
Software Providers: Relax Gaming, NetEnt, Pragmatic Play, Evolution
Welcome Bonus: Bet £10, Get 100 Free Spins
Midnite Casino offers a growing collection of online slots, live casino games and table games from established software providers. High RTP titles include Book of 99, Starburst and Gonzo’s Quest, alongside a wide range of newer slot releases. New customers can claim 100 Free Spins after placing a qualifying £10 bet, subject to the latest welcome bonus terms.
8) LiveScore Bet Casino
UK Licence: Yes
Highest RTP Games: Book of 99 (99%), Jackpot 6000 (98.86%), Blood Suckers (98%)
Software Providers: Relax Gaming, NetEnt, Playtech, Evolution
Welcome Bonus: Bet £10, Get 100 Free Spins
LiveScore Bet Casino features online slots, live dealer games and table games from recognised software providers. Its game library includes high RTP titles such as Book of 99, Jackpot 6000 and Blood Suckers. New customers can claim 100 Free Spins after placing a qualifying £10 bet, subject to the current promotional terms.
9) QuinnBet Casino
UK Licence: Yes
Highest RTP Games: Mega Joker (99%), Blood Suckers (98%), White Rabbit Megaways (97.77%)
Software Providers: NetEnt, Playtech, Pragmatic Play, Evolution
Welcome Bonus: 100% up to £30 + 30 Free Spins
QuinnBet Casino offers a selection of online slots, live casino games and table games from established software providers. Players can access high RTP slots including Mega Joker, Blood Suckers and White Rabbit Megaways. New customers can claim a 100% deposit match up to £30, plus 30 Free Spins, after making a qualifying first deposit.
10) Novibet Casino
UK Licence: Yes
Highest RTP Games: Book of 99 (99%), White Rabbit Megaways (97.77%), Blood Suckers (98%)
Software Providers: Relax Gaming, Big Time Gaming, NetEnt, Evolution
Welcome Bonus: 100% up to £100 + 20 Bonus Spins
Novibet Casino includes a wide selection of online slots, jackpots, live dealer games and classic table games. High RTP titles such as Book of 99, Blood Suckers and White Rabbit Megaways are available from leading software providers. New customers can claim a 100% deposit match up to £100, plus 20 Bonus Spins, after making a qualifying first deposit.
11) BetVictor Casino
UK Licence: Yes
Highest RTP Games: Blood Suckers (98%), Starburst (96.09%), Gonzo’s Quest (96%)
Software Providers: NetEnt, Playtech, Evolution, Pragmatic Play
Welcome Bonus: Welcome Offer Available
BetVictor Casino offers thousands of online slots, live casino games and table games from established software providers. Its high RTP selection includes Blood Suckers, Starburst and Gonzo’s Quest, alongside progressive jackpots and newer slot releases. Eligible new customers can claim the casino’s latest welcome offer, subject to the current promotional terms.
12) Virgin Games Casino
UK Licence: Yes
Highest RTP Games: Mega Joker (99%), Blood Suckers (98%), Jackpot 6000 (98.86%)
Software Providers: NetEnt, Playtech, Games Global, Evolution
Welcome Bonus: Welcome Bonus Available
Virgin Games Casino features online slots, roulette, blackjack, live dealer games and jackpots from recognised software providers. High RTP games include Mega Joker, Jackpot 6000 and Blood Suckers, together with a wide range of popular slot titles. The casino regularly updates its welcome promotion, so it’s worth checking the latest offer before registering.
32Red Casino
UK Licence: Yes
Highest RTP Games: Book of 99 (99%), White Rabbit Megaways (97.77%), Blood Suckers (98%)
Software Providers: NetEnt, Relax Gaming, Microgaming, Evolution
Welcome Bonus: Welcome Bonus Available
32Red Casino offers a large selection of online slots, live dealer games, jackpots and classic table games from leading software providers. Its library includes high RTP titles such as Book of 99, Blood Suckers and White Rabbit Megaways, alongside hundreds of other slot games. New customers can claim the casino’s latest welcome offer, subject to the current promotional terms.
Unibet Casino
UK Licence: Yes
Highest RTP Games: Jackpot 6000 (98.86%), Blood Suckers (98%), Starburst (96.09%)
Software Providers: NetEnt, Playtech, Relax Gaming, Evolution
Welcome Bonus: Welcome Bonus Available
Unibet Casino features thousands of online slots, table games and live casino titles from recognised software providers. Players can access high RTP games including Jackpot 6000, Blood Suckers and Starburst, together with a broad selection of progressive jackpots. The casino regularly updates its welcome offer, so it’s worth checking the latest promotion before registering.
Perfect! Now we’re moving into the educational part of the article. This is where we can demonstrate expertise and make the page genuinely helpful. I’ve kept the writing simple, factual and free from unnecessary filler.
What Is RTP?
RTP stands for Return to Player. It is a percentage that shows how much a casino game is expected to pay back over a large number of spins or rounds. The figure is calculated over millions of plays, so it reflects a game’s long-term theoretical return rather than the outcome of a single session.
For example, a slot with an RTP of 97% is expected to return £97 for every £100 wagered over time. The remaining £3 represents the casino’s theoretical edge. This doesn’t mean every player will receive £97 back, as individual results can vary widely.
Most online slots have an RTP between 94% and 96.5%. Games with an RTP of 96% or higher are generally considered high RTP slots. Some titles exceed 98%, although these are less common and may not be available at every casino.
Highest RTP Casino Games
The table below includes some of the highest RTP casino games available at UK online casinos. RTP values are provided by the game developers and may vary if multiple RTP versions of the same game are offered.
| Game | Provider | RTP |
| Book of 99 | Relax Gaming | 99.00% |
| Mega Joker | NetEnt | 99.00% |
| Ugga Bugga | Playtech | 99.07% |
| Jackpot 6000 | NetEnt | 98.86% |
| 1429 Uncharted Seas | Thunderkick | 98.60% |
| Blood Suckers | NetEnt | 98.00% |
| Devil’s Delight | NetEnt | 97.84% |
| White Rabbit Megaways | Big Time Gaming | 97.77% |
| Joker Strike | Pragmatic Play | 97.70% |
| Ooh Aah Dracula | Barcrest | 97.66% |
| Rainbow Riches Pick N Mix | Barcrest | 97.60% |
| Lucky New Year | Pragmatic Play | 97.52% |
| 9 Masks of Fire | Gameburger Studios | 97.50% |
| Book of Souls | Nolimit City | 97.50% |
| Big Bass Bonanza | Pragmatic Play | 96.71% |
| Gates of Olympus | Pragmatic Play | 96.50% |
| Dead or Alive 2 | NetEnt | 96.82% |
| Starburst | NetEnt | 96.09% |
| Gonzo’s Quest | NetEnt | 96.00% |
| Reactoonz | Play’n GO | 96.51% |
Does High RTP Mean You’ll Win More?
Not necessarily. A higher RTP means a game has a better theoretical return over the long term, but it doesn’t predict what will happen during a single playing session.
For example, two players can play the same 97% RTP slot for the same amount of time and have completely different results. One player might win several bonuses, while the other may not trigger a feature at all. Every spin is random and independent of the last.
High RTP becomes more meaningful when looking at millions of spins. It can help compare games, but it shouldn’t be treated as a guarantee of better returns.
Another factor to consider is volatility. Two slots may have the same RTP but deliver wins in very different ways. One may pay smaller amounts more frequently, while another may pay less often but offer larger prizes when bonus features are triggered.
RTP vs Volatility
RTP and volatility are often mentioned together, but they measure different aspects of a casino game.
A slot with 97% RTP and high volatility may go through long periods without a win before paying a larger amount. Another game with the same RTP but low volatility is more likely to produce smaller wins regularly. Looking at both figures gives a better picture of how a game is designed to play.
| Feature | RTP (Return to Player) | Volatility |
| What it measures | The theoretical percentage of wagered money returned to players over millions of spins. | How often a game pays and the typical size of those payouts. |
| How it’s displayed | Percentage (e.g. 96.5% or 98%). | Usually shown as Low, Medium or High. |
| What it affects | The game’s long-term theoretical return. | The frequency and value of winning combinations. |
| Short-term impact | Doesn’t predict results during a single session. | Has a noticeable effect on how a session feels. |
| Low value example | A slot with 94% RTP has a lower theoretical return than one with 97% RTP. | Low volatility slots tend to pay smaller amounts more often. |
| High value example | A slot with 98% RTP has a higher theoretical return over time. | High volatility slots may go many spins without a win before awarding a larger payout. |
| Best suited for | Comparing the long-term value of different casino games. | Choosing a game that matches your preferred playing style and bankroll. |
Frequently Asked Questions
What is considered a high RTP casino game?
A casino game with an RTP of 96% or higher is generally considered high RTP. Some slots exceed 98%, although they’re less common and may not be available at every casino.
Can UK casinos change the RTP of a slot?
Some game providers offer multiple RTP versions of the same slot. Casinos can choose which version to use, so the RTP may vary between operators. The current RTP is usually shown in the game’s information or paytable.
Does a 99% RTP slot guarantee higher winnings?
No. RTP is a long-term theoretical figure calculated over millions of spins. Every spin uses a random number generator (RNG), so short-term results can be higher or lower regardless of the game’s RTP.
Do live casino games have RTP percentages?
Yes. Most live casino games publish theoretical RTP figures based on their rules. Blackjack and baccarat often have higher RTP percentages than roulette when played using optimal strategy.
How can I check a game’s RTP?
Most online slots display their RTP in the game’s Help, Paytable or Information section. Some casinos also include RTP details on the game’s information page before you launch it.
