Top 10 Highest RTP Slot Games [2021 Update]

What is slot games RTP, how is it calculated and which are the top 10 slot games with the highest RTPs? These are the topics we are discussing on this article. We have researched and found the top 10 highest RTP slot games, so you don’t need to waste any time checking every online slot review manually.

Now you might be wondering…why does it matter so much what the RTP of a slot game is?

This is one of the questions we answer on this page so keep reading and by the end of the article you will have a very good idea of the reasons why!

 Every slot player needs to have an idea about the RTP of the game they are playing. Here at we enjoy playing online slots and we decided to conduct a small research and list the highest RTP slot games

These games along with the best slot bonus and promotions can lead to some very enjoyable sessions of slots game play.

If you already know everything about RTP or just want to dive directly into the Best RTP slots then just scroll down to see our list of games!

What is Slot Games RTP?

Slot Games RTP is the acronym for ‘Return to Player’ and it is always displayed as a percentage. This term basically implies how often a player is likely to win, therefore, the higher the percentage, the higher the chances of winning.

what is RTP

How do we know that the Return to Player is fair for slot games?

The Gambling Commission is making sure that all the parties involved stick to the rules and all the suppliers and manufacturers of slot games are licensed and fully checked.

According to the UK Gambling Commission

The operator making gaming machines available for use, as well as the gaming machine suppliers and manufacturers, must be licensed by the Gambling Commission, or hold a permit issued by a local licensing authority.

Also the UK Gambling Commission is making it clear that Gaming machines must make information available about their category, % RTP and whether they are compensated or random.

Understanding RTP Percentages

Now that we have discussed and cleared the ” are slots games fair” question, let’s have a look at the slots RTP meaning in more detail.

When we take an RTP of 100%, it means that the probability of a player winning the game is equal to that of the house. If the RTP gets over 100% it is an implication that over time, the casino is losing money on the game.

There is no chance that there will be a slot game RTP of over 100% because there won’t be any reason for the casino to offer the game in the first place.

For example if a slot game has an RTP of 97%, then for every £100 wagered on this games from all players collectively £97 will be returned as winnings.

The slot games are programmed to average this RTP on the long term. So even if the return is slightly lower or slightly higher short term this will average out to the RTP of the game sooner or later.

This is where one of our slot tips ( take the money and run) comes into practice as well!

Slot games are different from live casino games for example. This is because slot games have a Random Number Generator (RNG) that produces what we see on our screen and this RNG is programmed to give out the correct RTP. This is why slot games or live casino games are not rigged.

This is why Best Payout Slots matter

The higher RTP percentage of a slot game, the better it is for the player.

Lower RTP percentages are always expected in land based casinos. Hence, it is always best to play online games that offer RTP percentages of 94% and above.

Under no circumstance should you settle for something less than this simply because there is much competition and choice in online casinos. You can find and play the highest payout slot machines quite easy.

How is RTP Calculated?

The following formula is used to calculate the RTP on a video slot machine:

(Total amount returned to players) / (total amount bet by players) = RTP

Note: The reason as to why a slot will never have an RTP of 100% is because this will most likely put the house out of business as they will make enormous losses.

Still, your chances as the player to make gains are high when the RTP is closer to 100% in the long term. So let’s dig in the list with the 10 highest rtp slot games.

Top 10 Highest RTP Slot Games

Below you can find a list of the top slot machine games online with the highest RTP and you can also try these games for free.

Bear in mind that these are popular slot games with high RTP that we have shortlisted. There might be other slot machine games with similar or even higher RTP to the ones we are listing but these 10 are a combination of high Return to Player and popularity.

You can find a lot of these top slot games in most major UK Casinos online like the William Hill slots section, the betfred slots section and many more that we are listing below.

If you already have an account with one of the online casinos that we are listing you can open a new one with another casino, take advantage of the welcome bonus that they offer and play these games!

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Are these the best William Hill Slots or the best Betfred Slots?

The answer depends on what you consider as “the best”.

If you are looking for high RTP slots then yes these are the best you can play at these online casinos or any of the casinos we are listing on our site.

However, If you are looking for modern, top notch graphics etc then you might want to have a look at the newest slot games that these casinos have added to their collection.

Here is a graph so you can have an overview of the games and their RTP percentage.

High RTP slot games chart

1. Goblin’s Cave by Playtech – 99.32% RTP

coblins cave - highest rtp slot games

Reels: 3
Paylines: 3
Progressive Jackpot: No

When it comes to the best RTP slot games, Goblin’s Cave rules them all with an outstanding RTP of 99.32%. The game has 3 reels and 3 paylines. Players can place up to 5 coins in a payline. It is only when the game is played with max coins that the low house of 0.68% applies.

Play at William Hill Casino

2. Ugga Bugga (by Playtech) – 99.07% RTP

ugga bugga slot_game - highest payout slot games

Reels: 3
Paylines: 10
Progressive Jackpot: No

This is a 3 reel and 10 payline slot game. It has a very low house edge of 0.93% when played with max coins.

Features offered in this slot include the wild symbol and one bonus feature among others.

Play Ugga Bugga at betfred

3. Mega Joker (by NetEnt) – 98.9% RTP

Mega Joker slot game

Reels: 3
Paylines: 5
Progressive Jackpot: No

This online slot machine is powered by NetEnt and it offers a low house edge of 1.1%. It is a 3-reel game with 5 paylines. Players are able to place up to 10 coins per line.

A bonus feature is available but wild symbols are not offered in this game.

Play Mega Joker at William Hill Casino

4. Blood Suckers by NetEnt – 98% RTP

Reels: 5
Paylines: 25
Progressive Jackpot: No

Blood Suckers slot is a 5 reel, 25 payline slot featuring a vampire theme. With a 98% RTP, it is one of NetEnt’s highest RTP slot games. The game has a Free Spins feature where you stand to get a payout of £50,000 and over. A vampire slaying game is included as a bonus and it gets activated if 3 or more bonus symbols appear at the same time on the reels.

Play at William Hill Casino

5. Good Girl, Bad Girl by Betsoft – 97.80% RTP

Reels: 5
Paylines: 30
Progressive Jackpot: Yes

This 3D slot by Betsoft with the “angel” and “devil” theme has an RTP of 97.80%. It is a slot machine featuring 5 reels and 30 paylines plus other special features.

6. Kings of Chicago by NetEnt – 97.80% RTP


Reels: 5
Paylines: 25
Progressive Jackpot: No

This slot offered by NetEnt has an RTP of 97.80% and is appealing due to the fact that it brings to a video slot the ambience of a video poker game and thus fans of both can partake.

Play this game at William Hill Casino

7. Big Bad Wolf by Quickspin – 97.35% RTP

Reels: 5
Paylines: 25
Progressive Jackpot: No

One of our personal favorites! Big Bad Wolf is a slot game with a great RTP at 97.35% but also some very entertaining graphics. Based on the classic story of the wolf and the 3 piggies, this slot game has great bonus rounds and features.

Play this game at William Hill Casino

8. Devil’s Delight by NetEnt – 97.60% RTP

devils delights slot screenshot

Reels: 5
Paylines: 20
Progressive Jackpot: No

Much as it is not the most popular slot offered by NetEnt, Devil’s Delight slot offers a high RTP percentage of 97.60% which makes it ideal for slot players that like this kind of themed games

Play at William Hill Casino

9. Simsalabim by NetEnt with 97.5% RTP

Reels: 5
Paylines: 25
Progressive Jackpot: No

Everyone loves a good magic shows and Simsalabim offers you just that! With a 97.5% RTP, this enchanting slot game powered by NetEnt will definitely add magic to your life. It has many fantastic features which include the scatter symbols which enhance your payout up to x200.

Play at William Hill Casino

10. Alaxe in Zombieland by Microgaming – 96.55% RTP


Reels: 5
Paylines: 25
Progressive Jackpot: No

This is a 5 reel, 25 payline slot game and its theme is based on the Alice in Wonderland movie. Alaxe in Zombieland is commonly found in casinos powered by Microgaming. 98.86% is the best RTP percentage offered by this slot and it varies depending on the site that you are playing it on.

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Frequently asked questions about RTP in a glance

What is RTP in Casino?

RTP means return to player and is the payout that the specific game has expressed in a percentage %

What percentage do slots payout?

Slots payout percentages vary but it is recommended to play slots that have over 95% payout

How is RTP calculated?

Total amount returned to players / total amount bet by players = RTP

Click Here for the Full List of Slot Games RTP from NetEnt
Slot Name RTP %
Aloha! Cluster Pays 96.42%
Alien Robots 96.60%
Aliens 96.40%
Arabian Nights 95.60%
Attraction 96.70%
Beach 96.80%
Big Bang 96.00%
Blood Suckers 98.00%
Blood Suckers 2 96.94%
Böb: The Epic Viking Quest for the Sword 98.00%
Bollywood Story 96.10%
Boom Brothers 96.40%
Butterfly Staxx™ 96.80%
Champion of the Track 96.50%
Copy Cats™ 96.76%
Cosmic Fortune 96.90%
Creature from the Black Lagoon 96.50%
Crime Scene 96.70%
Crusade of Fortune 95.90%
Dallas 96.70%
Dazzle Me 96.90%
Dead Or Alive 96.80%
Demolition Squad 97.10%
Devils Delight 97.60%
Diamond Dogs 96.10%
Disco Spins 96.40%
Divine Fortune Progressive 96.59%
Dracula 96.58%
Dragon Island 96.70%
Drive: Multiplier Mayhem 96.70%
EggOMatic 96.50%
Egyptian Heroes 96.70%
Elements 96.00%
Emoji Planet™ 96.40%
Evolution 96.30%
Excalibur 95.10%
Fairy Tale Legends: Hansel & Gretel™ 96.71%
Fairy Tale Legends: Red Riding Hood™ 96.33%
Fantasini: Master of Mystery 96.60%
Fishy Fortune 95.40%
Fisticuffs 96.70%
Flowers 96.30%
Football: Champions Cup™ 96.82%
Fortune Teller 93.30%
Frankenstein 96.60%
Fruit Case 96.40%
Fruit Shop 96.70%
Fruit Spin™ 96.84%
Funky Seventies 96.50%
Geisha Wonders 93.40%
Ghost Pirates 96.80%
Glow 96.70%
Go Bananas! 96.90%
Golden Shamrock 96.40%
Gonzo’s Quest 96.00%
Guns N’ Roses 96.93%
Hall of Gods 95.50%
Hit2Split 96.30%
Hook’s Heroes 96.82%
Hot City 96.10%
Icy Wonders 93.50%
Jack and the Beanstalk 96.30%
Jack Hammer 97.00%
Jack Hammer 2 97.10%
Jimi Hendrix Online Slot™ 96.91%
Joker Pro™ 96.80%
Jungle Games 96.60%
Jungle Spirit: Call of the Wild™ 96.47%
King of Slots 97.00%
Kings of Chicago 97.80%
Koi Princess 96.23%
Lights 96.10%
Lost Island 96.50%
Lucky Angler 96.40%
Mega Fortune 96.40%
Mega Fortune Dreams 96.40%
Motörhead Video Slot™ 96.98%
Mr. Green’s Old Jolly Grand Tour of Europe™ 97.00%
Mr Green: Moonlight 96.70%
Muse, Wild Inspiration 97.00%
Mystery Mansion 95.10%
Mythic Maiden 96.60%
Neon Staxx 96.90%
NRVNA -The next Experience 96.60%
Pacific Attack 95.50%
Pandora’s Box 95.10%
Piggy Riches 96.10%
Planet of the Apes™ 96.33%
Pyramid: Quest for Immortality™ 96.48%
Reel Rush 97.00%
Reel Steal 95.90%
Relic Raiders 90.00%
Robin Hood 96.80%
Scarface™ 96.80%
Scruffy Duck™ 96.38%
Secret Code 96.30%
Secrets of Atlantis™ 97.07%
Secrets of Christmas 96.72%
Secret of the Stones 96.70%
Secrets Of Horus 96.00%
Silent Run 96.10%
Simsalabim 97.50%
South Park™ 96.70%
South Park: Reel Chaos™ 96.80%
Space Wars 96.80%
Sparks 96.54%
Spellcast 96.00%
Spiñata Grande 96.84%
Starburst 96.10%
Steam Tower 97.00%
Stickers 96.69%
Subtopia 96.10%
Super Eighties 96.50%
Super Lucky Frog 93.00%
Tales of Krakow 93.30%
The Groovy Sixties 96.50%
The Invisible Man 96.40%
The Legend of Shangri-La: Cluster Pays™ 96.59%
The Marvellous Mr Green™ 96.10%
The Phantom of the Opera™ 96.57%
The Wish Master 96.60%
Theme Park: Tickets to Fortune™ 96.52%
Thief 96.70%
Thrill Spin 95.90%
Thunderfist 96.70%
Tiki Wonders 93.20%
Tornado: Farm Escape™ 96.50%
Trolls 95.10%
Twin Spin 96.60%
Twin Spin Deluxe™ 96.61%
Vegas Party 96.60%
Victorious 96.90%
Vikings Treasure 95.90%
Voodoo Vibes 94.00%
Warlords: Crystals of Power™ 96.89%
When Pigs Fly!™ 97.00%
Wild Rockets 96.70%
Wild Turkey 96.60%
Wild Water 96.40%
Wild Wild West: The Great Train Heist™ 96.74%
Wild Witches 96.10%
Wolf Cub™ 96.34%
Wonky Wabbits 96,50%
Zombies 97.20%