20+ years in the gambling industry including 13+ years playing and reviewing slots.
I've dedicated countless hours to researching, playing, and analysing various games to bring you the best RTP slots. My journey has taken me through a multitude of slot sites with varying RTP payout rates.
When diving deep into slot games, I understand that players are looking for the thrill of the game combined with the best possible returns. That’s why I put together this expert guide to identify the best slots to play with high RTP payouts.
Best RTP Slots (Top 10)
Best RTP Slots
If you want to play slots with the highest RTP rates, look no further. Below are the 10 best online slots payout percentages with details on each release. In some instances, you'll also find free slot demos where you can try for free:
| # | Slot Game | Provider | RTP | Max Win | Release Date |
|---|---|---|---|---|---|
| 1 | Ugga Bugga | Playtech | 99.07% | 1000 | 15/07/2006 |
| 2 | Book of 99 | Relax Gaming | 99% | 5000 | 04/05/2021 |
| 3 | 1429 Uncharted Seas | Thunderkick | 98.6% | 670 | 05/05/2016 |
| 4 | Marching Legions | Relax Gaming | 98.12% | 10000 | 02/07/2020 |
| 5 | Blood Suckers | NetEnt | 98% | 1014 | 10/11/2013 |
| 6 | Money Cart | Relax Gaming | 98% | 2000 | 07/12/2021 |
| 7 | Money Cart 2 | Relax Gaming | 98% | 5000 | 20/07/2021 |
| 8 | Jokerizer | Yggdrasil Gaming | 98% | 600 | 01/03/2016 |
| 9 | Starmania | Light & Wonder | 97.87% | 1000 | 10/09/2015 |
| 10 | Blood Suckers Megaways | Red Tiger | 97.66% | 20521.9 | 26/01/2023 |
10,000+ Slot Games Played
1. Ugga Bugga: 99.07% RTP
Released by Playtech in 2006, Ugga Bugga is the slot game with the highest RTP rate online. Boating a 99.07% RTP, it’s an African jungle-themed game with 3 reels and 10 individual paylines.
Known as the Multi-Spin feature, you aim to form winning combinations on as many paylines as you can. Offering 1,000 times bet max wins, this cult favourite may be simple but no other slot game comes close in terms of returns.
- No. of slots 2500+
- Payout speed 24 Hours
- Win rate Variable
- High Payout Slots
- Huge Slot Selection
- 1 of the Biggest Online Gambling Businesses WorldWide
2. Book of 99: 99% RTP
Released by Relax Gaming in May 2021, Book of 99 is a 5 reel, 10 payline slot game with a 99% RTP rate. With an ancient Greek theme, you can spin away on this popular ‘Book of’ slot from 10p a spin.
The Free Spins feature comes with a special expanding symbol which can lead to 5,000 times bet max wins on each free spin. With unlimited free spins to be won, there are also 2 ways to trigger the free spins.
- No. of slots 1110
- Payout speed 24 hours
- Win rate 97%
- Free, Instant Withdrawals
- PayPal Available For UK Users
3. 1429 Uncharted Seas: 98.6% RTP
1429 Uncharted Seas is a 5 reel, 25 payline slot from Thunderkick that comes with a 98.6% RTP rate. With a seafaring theme, you can spin away on all devices from 10p per spin. Set in the Middle Ages, it’s one of the most unique-looking games you’ll come across.
Offering expanding wilds in the base game and the Free Spins feature, there are up to 100 free spins up for grabs. With up to 3 wild reels per free spin, 1429 Uncharted Seas comes with 670 times bet max wins.
- No. of slots 1508
- Payout speed Instant - 24 Hours
- Win rate 97.7%
- Cashback on 100% of your losses
- Best Payout Slots
- Exclusive All British games
4. Marching Legions: 98.12% RTP
Set in ancient Rome, Marching Legions is by Relax Gaming and has 5 reels and 243 ways to win. Playable from 10p per spin on all devices, it has a 98.12% RTP rate.
With re-spins with stacks of high-value legionary symbols matching onto the reels, filling the meter fully triggers the Free Spins feature. Here, collect 3 horns to benefit from more Marching stacks which shift with each free spin. This can lead to 10,000 times bet max wins.
- No. of slots 1000
- Payout speed 1-3 Days
- Win rate Variable
- Bet on the Biggest Global Lotteries
- Best Payout Slots
- £500k Drops and Wins Slots
5. Blood Suckers: 98% RTP
With a 98% RTP rate, Blood Suckers is a NetEnt slot game with 5 reels and 25 paylines. Based on blood-sucking vampires, it was released way back in 2013 and can be played from 25p per spin.
In the Vampire Slaying Bonus, you pick from coffins to unveil cash prizes. In the Free Spins feature, there is a trebling 3x multiplier on all wins as well as extra free spins to be won. With 1,014.6 times bet max wins, its popularity has spawned a sequel (Blood Suckers 2) and a Megaways version (see below).
- No. of slots 1600
- Payout speed 24 Hours
- Win rate 96%
- Hot and Cold Slot Guide
- PlayOJO Kickers (Promotions)
- OJO+ Money Back on Every Bet
6. Money Cart: 98% RTP
Released after Money Cart 2 oddly (below), Relax Gaming’s Money Cart has a 98% RTP rate. Using a Bonus Reels mechanic, it’s played with 5 reels and no base game or winning combinations possible. Playable from 10p per spin, the game comes alive when you land 3+ bonus symbols.
With a Wild West theme, 3 or more bonus symbols trigger the Re-Spin feature. With 3 re-spins awarded, any symbol will reset your re-spins tally. Bonus symbols give you prizes up to 1 x bet and wideners increase your chances of winning with an extra reel. There are also Collector, Payer, Persistent Payer and Persistent Collector symbols which increase your win potential up to 2,000 times your total bet.
- No. of slots 3750+
- Payout speed Instant Options
- Win rate Variable
- Exclusive Slots & Instant Withdrawals
- iOS & Android Apps
7. Money Cart 2: 98% RTP
With a 98% RTP rate, Money Cart 2 also uses the Bonus Reels mechanic and is a bonus feature version of the Money Train 2 slot game. Released in July 2021 by Relax Gaming, this Wild West/steampunk adventure focuses on the streak re-spin feature (triggered by landing 3 or more Bonus symbols).
With 3 re-spins awarded, any symbol landing will see your re-spins tally revert to 3. There are various symbols that can land including a Golden Bonus (up to 20 x bet), Payer and Collector. Look out for Sniper and Necromancer symbols which doubles the value of up to 8 symbols and brings up to 7 symbols back to life. Max wins can reach 5,000 times your total bet.
- No. of slots 4000+
- Payout speed Instant - 24 Hours
- Win rate 96.9%
- Great Slots & Exclusive Table Games
- Excellent 24/7 Customer Service
8. Jokerizer: 98% RTP
Jokerizer is a Yggdrasil Gaming-powered slot game with 5 reels and 10 paylines. With a 98% RTP rate and a jester/fruit machine theme, you can spin away from just 20p per spin. 3 or more Joker symbols will lead to a Mystery Win of up to 600 times your total bet.
Every win activates the Jokerizer Mode where you can gamble for more wins: 2 Joker symbols will lead to a Mystery Prize of up to 600 x bet. Simple yet fun, Jokerizer is still a very popular title due to its straightforward gameplay and high RTP rate.
- No. of slots 1500+
- Payout speed Instant - 24 Hours
- Win rate Variable
- Fast Withdrawals & Great Welcome Offer
- Best New Slot Titles
9. Starmania: 97.87% RTP
Starmania is by Light & Wonder/NextGen Gaming and has a 97.87% RTP rate. With 5 reels and 10 paylines, you can spin away from 10p a spin. Set in outer space, it focuses on the Free Games feature where you begin with 10 free spins.
There are 30 extra stacked wilds on the 3 middle reels which can lead to 3 wild reels per free spin. With additional free spins to be won, Starmania comes with 1,000 times bet max wins. This cosmic game is very similar to NetEnt’s Starburst slot but with a much higher RTP rate and double the win potential.
- No. of slots 2660+
- Payout speed 24 Hours
- Win rate 97.60%
- Over 3,000 Games
- Top Slot Studios Featured
- Daily Challenges and Spin offers
10. Blood Suckers Megaways: 97.66% RTP
Rounding out OLBG’s list of the top 10 RTP slot games, you have Red Tiger’s Blood Suckers Megaways. With a 97.66% RTP rate, it has 6 reels and up to 117,649 ways to win. The Megaways version of the popular Blood Suckers slots by sister company NetEnt, you can spin away from 10p per spin.
Offering cascades and random base game features that award Super Wild reels and multipliers, you choose from coffins in the Free Spins feature to win more free spins, random wilds, win multipliers and Super Wild reels. Boasting the highest RTP rates for a Megaways game, it comes with 20,521.9 times bet max wins to be precise.
- No. of slots 2900
- Payout speed Instant - 24 Hours
- Win rate 95.98%
- Superb New Slot Selections
- Instant Withdrawals
- Best Payout Slots
Best Site for High RTP Slots
If you want the slot games with the highest RTP rates and best payouts, OLBG recommends MrQ.
They guarantee the top RTP rate for all their slots and even have a custom screen before each game loads showcasing the RTP.
Transparent and user-focused, MrQ has over 1,500 slot games to play including slots from all the top studios such as Nolimit City, Push Gaming, Pragmatic Play and Relax Gaming.
With PayPal, debit cards and Pay By Phone payment methods available, withdrawal times are instant and free. There is also no wagering requirements on all promotions, bonuses and offers.
Best Free Spins No Wagering Offers 2025
Highest Max Win Slots
If you’re considering the best payout slots, this could also mean slot games with the highest max win potential. Also known as high multiplier slots, it’s defined as the slot game that pays the most on a single spin or in a bonus feature as a whole.
Excluding progressive jackpot games, below are the 5 highest max wins slots available online with Tombstone Slaughter offering 500,000 times bet max wins per spin!
| # | Slot Game | Provider | RTP | Max Win (x Bet) | Release Date |
|---|---|---|---|---|---|
| 1 | Tombstone Slaughter | Nolimit City | 96.01% | 500000 | 28/01/2025 |
| 2 | Tombstone RIP | Nolimit City | 96.08% | 300000 | 11/01/2022 |
| 3 | San Quentin 2: Death Row | Nolimit City | 96.13% | 200000 | 24/09/2024 |
| 4 | Starburst XXXtreme | NetEnt | 96.26% | 200000 | 15/07/2021 |
| 5 | Peking Luck | Pragmatic Play | 96.5% | 180000 | 30/08/2018 |
1. Tombstone Slaughter: 500,000 x bet max wins
- RTP: 96.01%
- Max Win: 500,000x
- Volatility: Insane
- Stakes: 20p to £5
- Release Date: 28 January 2025
Join El Gordo's daughter on her quest for revenge in Tombstone Slaughter. By Nolimit City, this brutally volatile slot game has 6 reels and begins with 324 ways to win. With xNudge Wilds with increasing multipliers and Reel Split Wilds, there are Revolver symbols that bring Cylinder features into play,
The game also has 2 free spins features with El Gordo's Revenge Meter awarding more free spins and increasing multipliers when you collect Bonus symbols. Offering 500,000 times bet max wins, it's the highest-paying slot game ever made ensuring it's new sheriff in town.
- No. of slots 1500
- Payout speed 24 hours
- Win rate Variable
- UK-only Slot Site With 24/7 Customer Support
- Quick & Free Withdrawals
2. Tombstone RIP: 300,000 x bet max wins
- RTP: 96.08%
- Max Win: 300,000x
- Volatility: Insane
- Stakes: 10p to £5
- Release Date: 11 January 2022
Nolimit City’s Tombstone RIP is the second highest max win slot available online. With 5 reels and 108 paylines initially, this brutal and gory Wild West adventure boasts 300,000 times bet max wins and a 96.08% RTP rate.
Featuring murder, hangings and amputations, the hit frequency rate of 9.08% means you’ll land a win every 11 spins on average. If you win 1 x bet or lower, it’s not even awarded! There are lots of wild extras as well as 2 free spins features. Look out for the Boothill Free Spins which has Cowboys that come with multipliers up to 999x.
- No. of slots 2500+
- Payout speed Instant - 24 Hours
- Win rate 96%
- Excellent Payment Options
- iOS & Android Apps
3. San Quentin 2: Death Row: 200,000 x bet max wins
- RTP: 96.13%
- Max Win: 200,000x
- Volatility: Extreme
- Stakes: 20p to £5
- Release Date: 24 September 2024
Don’t drop the soap again in San Quentin 2: Death Row. This sequel from Nolimit City begins with 5 reels and 1,024 ways to win with Enhancer Cells awarding high-value inmate symbols, xWays and Razor Split symbols. Dramatically increasing the number of ways to win, you’ll also benefit from Split Wilds in the base game.
In the Green Mile Spins, you can gamble for more starting Jumping Wilds and even gamble to win the game’s max win of 200,000 times your total bet. In the free spins, there are Jumping Wild multipliers that double when affected by Razor Split enhancers.
- No. of slots 1800
- Payout speed 24 hours
- Win rate 96.25%
- Over 3,000 games
- Top slot studios featured
- Create your own Favourites lobby
4. Starburst XXXtreme: 200,000 x bet max wins
- RTP: 96.26%
- Max Win: 200,000x
- Volatility: Very High
- Stakes: 10p to £5
- Release Date: 15 July 2021
NetEnt’s long-awaited sequel to Starburst is the 5 reel, 9 payline Starburst XXXtreme. Playable from 10p a spin, you head to outer space once again but with plenty more rocket fuel. With a 96.26% RTP rate, it feels very similar to the original cult favourite.
With Starburst Wilds expanding and awarding re-spins on the 3 middle reels, Starburst XXXtreme adds multipliers up to 150x which can combine up to 450x! This can lead to 200,000 times bet max wins which is significantly more than the 500 x bet payouts in the original slot.
- No. of slots 1000+
- Payout speed Instant Options
- Win rate 96.5%
- Mobile-first With Instant Withdrawals
- 6 minute withdrawals
5. Peking Luck: 180,000 x bet max wins
- RTP: 96.5%
- Max Win: 180,000x
- Volatility: Very High
- Stakes: 25p to £5
- Release Date: 30 August 2018
Head into the world of Chinese opera in Peking Luck. With 5 reels and 25 paylines, it comes with a 96.5% RTP rate and can be played from 25p per spin. There are Wild Multipliers that double your payout.
In the Free Spins feature, you pick from fans to win up to 38 free spins with an 18x multiplier. With the potential for 180,000 times bet max wins, Peking Luck is the highest paying of all Pragmatic Play slots.
- No. of slots 1900+
- Payout speed Instant - 24 Hours
- Win rate Variable
- Fast Withdrawals
- Weekly Promotions & 20% Cashback
High Max Win by Slot Provider
With the 5 highest max win slots highlighted above, I thought it would be of interest to provide a table showcasing the slot game with the highest win potential by slot provider (where available). I've listed them from highest to lowest win potential.
| Provider | Slot Game | RTP | Max Win (x Bet) | Release Date |
|---|---|---|---|---|
| Nolimit City | Tombstone Slaughter | 96.01% | 500000 | 28/01/2025 |
| NetEnt | Starburst XXXtreme | 96.26% | 200000 | 15/07/2021 |
| Pragmatic Play | Peking Luck | 96.5% | 180000 | 30/08/2018 |
| Big Time Gaming | Golden Goose Megaways | 96.44% | 150335 | 27/11/2024 |
| Relax Gaming | Money Train 4 | 96.10% | 150000 | 20/09/2023 |
| Yggdrasil Gaming | Cazino Zeppelin Reloaded | 96.0% | 102838 | 27/01/2022 |
| Red Tiger | Judgement Day Megaways | 96.0% | 100000 | 14/09/2023 |
| Push Gaming | Razor Returns | 96.55% | 100000 | 04/07/2023 |
| Realistic Games | Super Graphics Game Changer | 96.20% | 100000 | 26/08/2020 |
| 4ThePlayer | 90k Yeti Gigablox | 95.50% | 90000 | 01/11/2021 |
| IGT | Skeleton Key | 96.49% | 83333 | 17/12/2019 |
| Play 'n GO | Enchanted Crystals | 96.7% | 68308 | 26/05/2014 |
| ELK Studios | Nitropolis 5 | 94.00% | 50000 | 23/07/2024 |
| Print Studios | Royal Potato 2 | 96.26% | 40000 | 28/09/2023 |
| Thunderkick | 12 Bolts of Thunder | 96.15% | 30000 | 31/01/2024 |
| Slotmill | Money Jar 2 | 95.80% | 25000 | 08/08/2023 |
| Hacksaw Gaming | Chaos Crew 2 | 96.27% | 20000 | 28/09/2023 |
What is RTP?
RTP is short for Return to Player. It’s the term that describes the payback percentage of a slot game. With the average RTP rate around the 96% mark for online slot games, you would expect to win £96 back for every £100 you wager on average.
Theoretical RTP
To calculate your RTP rate for a particular session on a slot game, you need to divide your win amount by the wager/stake amount. Here are a couple of scenarios:
- Win: If you were to wager £100 and win £120, your actual RTP would be 120%
- Lose: If you were to wager £100 and won £60, your actual RTP would be 60%
The longer you play, the actual RTP should get closer to the theoretical RTP rate. If a slot game’s RTP rate is 96%, the slot site will in theory win 4%. This is calculated over a cycle of billions of spins. You may be the lucky player who walks away with an RTP rate of over 100% but other players will not. This all balances at over a certain number of spins at the theoretical RTP rate.
How to Find a Slot Game’s RTP Rate
There are a few ways to find a slot game’s RTP rate. Firstly, reading the detailed slot reviews at OLBG is one way, but no one don’t have details on every single online slot game, unfortunately. You could also head to the slot studio’s website.
You’ll find the RTP from the game’s Paytable, Information or Help section within a slot game. Each studio presents the information differently, with some specifying the RTP rate as soon as you fire up the game. Others mention them deep inside the Paytable or from a small information link at the bottom of the game’s screen.
Some slot sites are becoming transparent when it comes to RTP rates. MrQ offers the highest RTP rate on all their slot games. They also display the RTP prominently when firing up a slot game!
Multiple RTP Settings
Whilst playing the best RTP slot games is great, you should know that studios or slot providers create multiple RTP versions or settings for their slots. You may have noticed that OLBG specifies 2, 3, 4, 5 or even 6 RTP rates for slot games in our detailed reviews.
RTPs can Change
Each slot site can choose the RTP setting they want for each game. This can drastically influence how much money they make from a slot game and how much you can win.
If I take a look at the most popular online slot game, Play ‘n GO’s Book of Dead, there is a table below showing 5 RTP versions with the difference for both the site and the player based on the wager of £1,000, £1 million or £1 billion:
| RTP Rate | House Edge | £1,000 Wager | £1 Million Wager | £1 Billion Wager |
|---|---|---|---|---|
| 96.21% | 3.79% | £37.90 | £37,900 | £37.9 million |
| 94.25% | 5.75% | £57.50 | £57,500 | £57.9 million |
| 91.25% | 8.75% | £87.50 | £87,500 | £87.5 million |
| 87.25% | 12.75% | £127.50 | £127,500 | £127.5 million |
| 84.18% | 15.82% | £158.20 | £158,200 | £158.2 million |
If a particular slot site were to offer the 84.18% RTP version as opposed to the highest RTP of 96.21%, here is how much more they would make:
- £120.30 more per £1,000 staked/wagered
- £120,300 more per £1 million staked/wagered
- £120.3 million more per £1 billion staked/wagered
RTP Rates in Jackpot Slots
If you’re a fan of slot games with progressive jackpots, you’ll notice that their RTP rates tend to be lower than standard slot games. This is because a portion of the RTP rate contributes directly to the jackpots.
The progressive jackpots increase the more players play basically. Below is a table highlighting the RTP allocation for the biggest jackpot slots:
| Jackpot Slot | RTP Rate | Jackpot RTP | Actual RTP |
|---|---|---|---|
| Mega Moolah | 93.42% | 5.3% | 88.12% |
| Mega Fortune | 96.6% | 7.6% | 89% |
| The Finer Reels of Life WowPot | 92.01% | 5.3% | 86.71% |
| Dead Man’s Trail Dream Drop | 94% | 12% | 82% |
| Age of the Gods | 95.02% | 0.99% | 94.03% |
| Bonanza Megapays | 96.4% | 9.6% | 86.8% |
Impact on Slot Site Bonuses
It’s all well and good that I’ve identified the highest RTP slot games. Popular amongst players, there are not popular with slot sites. Well, you may find lower RTP versions at certain slot sites but you will also find that the best RTP slots will not contribute to a slot site’s welcome bonus or free spins wagering requirements.
Playing a slot game with a high RTP rate will make it easier for players to complete the wagering requirements and convert the slots bonus into cash. Most slot sites will therefore not include slot games with RTP rates of 97% or higher as part of the eligible games for wagering requirements.
High RTP slot games are similar to table games such as roulette, video poker, baccarat and blackjack. Due to the very high RTP rates for these games, they normally contribute 10% towards a bonus’ wagering requirements. If you were to wager £100 for example, only £10 would be valid for the wagering requirements.
Pros and Cons of High RTP Slots
As with everything, there are both positives and negatives to playing the best RTP slot games. Below I highlight the main pros and cons with the pros outweighing the cons:
Pros
- Higher chance of winning long-term
- Your balance should last longer in theory
- Smaller house edge/margin
- Found at most UK casino/slot sites
Cons
- Won’t often contribute to a bonus’ wagering requirements
- Multiple RTP versions available on high RTP slots
FAQs
FAQ
Best Payout Slots FAQs
What slots have the best RTP?
The slot games with the best Return to Player rates include Playtech’s Ugga Bugga (99.07%), Relax Gaming’s Book of 99 (99%) and Thunderkick’s 1429 Uncharted Seas (98.6%).
What is RTP for slot games?
RTP stands for Return to Player and is the term used to describe the payback percentage of a casino or slot. With the average around 96% for online slots, the RTP is calculated over billions of spins (theoretical RTP).
How do I find a slot game’s RTP rate?
Open the slot game’s Paytable, Help or Info section where you’ll find the RTP in most cases. If not, check the studio’s website or OLBG’s detailed slot reviews.
What is the average slot RTP rate?
The average RTP for slot games online is around 96%. However, with more regulation, RTP rates have reduced under 96% in most cases. Slot game providers/studios do offer multiple RTP settings which casinos can choose from.
How do I calculate RTP for slots?
You can calculate a slot game’s RTP rate by dividing the win amount by the wager/turnover figure and multiplying by 100. This will determine your particular return for that individual session.
What is theoretical RTP in slots?
The theoretical RTP rate for online slots is the expected payback percentage over a large number of spins (normally in the billions). The more you play, the closer to this figure you will get, in theory.
