Behind every game you play at online slot sites is a slot provider: the studio that designs the reels, mechanics, bonus features and maths. There are hundreds of them supplying UK players, and the studio behind a game tells you a lot about what to expect: the style, the volatility, the signature features and, crucially, the RTP.
Below you’ll find dedicated guides to the top slot providers, from Nolimit City and Pragmatic Play to NetEnt, Play ‘n GO and many more. Each guide highlights the studio’s best games (with reviews and free demo slots versions), highest max win and RTP titles, signature mechanics and where to play for real money. Every studio listed holds a valid UK Gambling Commission operating licence.
How I Review Each Slot Studio
Top Slot Providers at a Glance
| Provider | Founded | UKGC Licence | Best known for |
|---|---|---|---|
| Nolimit City | 2013 | 52097 | Boundary-pushing themes, huge max win potential, unique xMechanics |
| Pragmatic Play | 2015 | 56015 | Big Bass series, Sweet Bonanza, 1000 series, Drops & Wins promo |
| Hacksaw Gaming | 2017 | 54059 | Chaos Crew, DuelReels/VS mechanics |
| Play 'n GO | 2005 | 55949 | Book of Dead, Reactoonz, mobile-first pioneer |
| NetEnt | 1996 | 41655 | Starburst, Gonzo's Quest, Avalanche mechanic |
| Big Time Gaming | 2011 | 41655 | Inventors of Megaways, Megaclusters & more mechanics |
| Playtech | 1999 | 38516 | Age of the Gods, branded slots, Cash Collect games |
| Push Gaming | 2010 | 54984 | Razor Shark, Jammin' Jars, superb design |
| ELK Studios | 2013 | 40844 | Nitropolis series, mobile-first approach |
| Relax Gaming | 2010 | 37462 | Money Train series, Dream Drop jackpot network |
The one thing to check before you play: RTP versions
Best Slot Providers: In-Depth Guides
Each studio below links to a full OLBG guide with reviews, free demos, key facts and where to play. They also include their highest max win and RTP slots, slot series, innovations and unique mechanics. All slot studios are trusted, well-established and reputable.
Nolimit City
Top-Rated Nolimit City Slots
Mental 2
- OLBG Rating: 5
- RTP: 96.06%
- Max Win: 99,999x
- Release Date: 25 Mar 2025
- Provider: Nolimit City
Tombstone Slaughter
- OLBG Rating: 5
- RTP: 96.01%
- Max Win: 500,000x
- Release Date: 28 Jan 2025
- Provider: Nolimit City
Tombstone RIP
- OLBG Rating: 4.8
- RTP: 96.08%
- Max Win: 300,000x
- Release Date: 11 Jan 2022
- Provider: Nolimit City
Fire in the Hole 3
- OLBG Rating: 4.7
- RTP: 96.05%
- Max Win: 70,000x
- Release Date: 03 Jun 2025
- Provider: Nolimit City
With over 100 games, Nolimit City was founded in 2013 and is regarded as the best slot provider around. You won’t find ordinary games with generic themes and mechanics. Nolimit City are known for their unique and innovative slots coupled with controversial themes and storylines that push the boundaries further than you could ever imagine.
Nolimit City slots also use unique, in-house xMechanics to make them stand out from the crowd. There are slots based on prisons, notorious serial killers, blood-thirsty killing machines, punk rock, BDSM parties, fat bast*rds, twisted demons, hillbilly fishermen, the US/Mexican border, Russian labour camps and war!
Known for their best payout slots, the most popular Nolimit City slot games include Tombstone Slaughter (with 500,000 x bet max wins), San Quentin 2: Death Row, Fire in the Hole, Kenneth Must Die, Serial and Gluttony. Check out Nolimit City slot reviews, free demos and much more in our dedicated guide:
Nolimit City Slots: Reviews, Free Demos & Best UK Sites
Pragmatic Play
Top-Rated Pragmatic Play Slots
Sweet Bonanza
- OLBG Rating: 4.7
- RTP: 96.49%
- Max Win: 21,175x
- Release Date: 25 Jun 2019
- Provider: Pragmatic Play
Sumo Supreme Megaways
- OLBG Rating: 4.5
- RTP: 96.55%
- Max Win: 12,500x
- Release Date: 18 Jul 2024
- Provider: Pragmatic Play
Sweet Bonanza 1000
- OLBG Rating: 4.5
- RTP: 96.53%
- Max Win: 25,000x
- Release Date: 03 Jun 2024
- Provider: Pragmatic Play
Sugar Rush 1000
- OLBG Rating: 4.5
- RTP: 96.53%
- Max Win: 25,000 x bet
- Release Date: 18 Mar 2024
- Provider: Pragmatic Play
Founded in 2015, Pragmatic Play offers you more than 350 slot games with multiple releases per month. Arguably the most popular slot provider, they are best known for their fishing-themed Big Bass slot series which has seen various slot and casino sites use Big Bass games to offer no wagering free spins offers.
Other popular Pragmatic Play slots include Wolf Gold, The Dog House Megaways and the iconic Sweet Bonanza. With lots of Megaways games, they have a 1000 slot series which are supercharged versions of popular slots with higher max win potential.
Pragmatic Play is certified and licensed in over 40 jurisdictions and offers multi-award-winning games that are available on devices, in all currencies and 33 languages. With a superb and easy-to-use interface, their slots are particularly great on smartphone devices.
Best Pragmatic Play Slots, Sites, Demos & Reviews
Play ‘n GO
Top-Rated Play 'n GO Slots
Book of Dead
- OLBG Rating: 5
- RTP: 96.21%
- Max Win: 5,000x
- Release Date: 14 Jan 2016
- Provider: Play 'n GO
Legacy of Dead
- OLBG Rating: 4.6
- RTP: 96.58%
- Max Win: 5,000x
- Release Date: 02 Jan 2020
- Provider: Play 'n GO
Rise of Olympus
- OLBG Rating: 4.5
- RTP: 96.50%
- Max Win: 5,000x
- Release Date: 23 Aug 2018
- Provider: Play 'n GO
KISS Reels of Rock
- OLBG Rating: 4.4
- RTP: 96.2%
- Max Win: 50,000x
- Release Date: 09 Dec 2021
- Provider: Play 'n GO
Founded in 2005, Play ‘n GO is one of the world’s leading slot providers. With a steady flow of new games, there are over 350 Play ‘n GO slots to enjoy. Available at the overwhelming majority of slots, casino and gambling sites, all games use their own mechanics and bonus features.
Play ‘n GO was the first slot provider to bring mobile slot games to market with all their titles available to play seamlessly on smartphones and tablets. With various industry awards, PnG is best known for its Book of Dead slot which has become the most popular of all ‘Book of’ slots online. This has resulted in the fully-fledged Dead (set in ancient Egypt) and Wilde slot series which feature daughter Cat and uncle Gerard.
Also known for their quirky Reactoonz slot series, popular Play ‘n GO games include Raging Rex 3, Moon Princess, Rise of Olympus, Return of the Green Knight and Legacy of Dead. Like music? There are various official slot games dedicated to rock bands KISS, Def Leppard, Mötley Crüe and ZZ Top as well as artists/bands such as *NSYNC and Alice Cooper.
Best Play ‘n GO Slots, Sites, Demos & Reviews
NetEnt
Top-Rated NetEnt Slots
Dead or Alive 2
- OLBG Rating: 5
- RTP: 96.8%
- Max Win: 111,111.11x
- Release Date: 23 Apr 2019
- Provider: NetEnt
Starburst
- OLBG Rating: 5
- RTP: 96.09%
- Max Win: 500x
- Release Date: 20 Jun 2012
- Provider: NetEnt
Starburst XXXtreme
- OLBG Rating: 4.6
- RTP: 96.26%
- Max Win: 200,000x
- Release Date: 15 Jul 2021
- Provider: NetEnt
Vikings
- OLBG Rating: 4.6
- RTP: 96.05%
- Max Win: 10,000x
- Release Date: 22 Nov 2018
- Provider: NetEnt
Founded in 2006, NetEnt is one of the leading slot providers. Offering over 200 slot games, the mobile-friendly studio has gone from strength to strength with many cult favourites. With so many great NetEnt slots, their most popular game and one of the most played online slots of all time is the iconic Starburst.
With other play favourites such as Gonzo’s Quest, Blood Suckers, Piggy Riches, Aloha! Cluster Pays and Dead or Alive 2, NetEnt are also responsible for some of the internet’s most popular progressive jackpot slots such as Mega Fortune, Hall of Gods and Arabian Nights.
NetEnt is responsible for the first Cluster Pays game, the innovative Avalanche mechanic and a whole host of branded games such as Vikings, Narcos, Ozzy Osbourne, Street Fighter 2: The World Warrior and Jumanji.
Best NetEnt Slots, Sites, Demos & Reviews
Big Time Gaming
Top-Rated Big Time Gaming Slots
Bonanza Megaways
- OLBG Rating: 5
- RTP: 96%
- Max Win: 26,000x
- Release Date: 07 Dec 2016
- Provider: Big Time Gaming
Rasputin Megaways
- OLBG Rating: 4.8
- RTP: 96.68%
- Max Win: 68,180x
- Release Date: 05 Dec 2022
- Provider: Big Time Gaming
Bonanza Falls
- OLBG Rating: 4.7
- RTP: 96.51%
- Max Win: 93,540x
- Release Date: 11 Dec 2023
- Provider: Big Time Gaming
White Rabbit Megaways
- OLBG Rating: 4.7
- RTP: 97.24%
- Max Win: 17,420x
- Release Date: 25 Oct 2017
- Provider: Big Time Gaming
Formed in 2011, Big Time Gaming has created more than 60 slot games. Not an ordinary slot provider by any stretch of the imagination, BTG is a pioneer in the online slots world as they created the much-loved Megaways mechanic. Most Big Time Gaming slots use Megaways with Bonanza Megaways the most popular of all. Due to their appeal, BTG licensed the mechanic to countless other slot providers meaning there are hundreds of Megaways slots available.
Offering high RTP rates and big win potential, Big Time Gaming didn’t rest on the success of Megaways. They created Megaclusters, Megaquads and Megadozer mechanics as well as a Megapays jackpot network.
With plenty of slot sequels, BTG’s best games include Lil’ Devil, Extra Chilli Megaways, Star Clusters Megaclusters and White Rabbit Megaways. Big Time Gaming also has lots of branded titles with the likes of Monopoly Megaways, several Who Wants to be a Millionaire slots and plenty of games based involving rock bands/songs (i.e. The Final Countdown and Danger High Voltage).
Best Big Time Gaming Slots, Sites, Demos & Reviews
Playtech
Top-Rated Playtech Slots
Age of the Gods
- OLBG Rating: 5
- RTP: 95.02%
- Max Win: 50,000x
- Release Date: 11 Jul 2016
- Provider: Playtech
Jackpot Giant
- OLBG Rating: 4.3
- RTP: 94.22%
- Max Win: 50000x
- Release Date: 20 Dec 2014
- Provider: Playtech
Buffalo Blitz
- OLBG Rating: 4.2
- RTP: 95.96%
- Max Win: 13,373x
- Release Date: 01 Jul 2016
- Provider: Playtech
Adventures in Wonderland Deluxe
- OLBG Rating: 4.2
- RTP: 88%
- Max Win: 10,000x
- Release Date: 02 Feb 2016
- Provider: Playtech
Founded in 1999, Playtech is one of the biggest online casino game providers in the world. Offering hundreds of options, you’ll find their slots at UK gambling sites which offer sports betting primarily. Best known for their excellent slot series, I particularly recommend the Fire Blaze and Cash Collect series as well as the iconic Age of the Gods slots.
With many top online and land-based favourites such as Great Blue, Buffalo Blitz and Halloween Fortune, Playtech also has an extensive jackpot slot offering with the likes of Jackpot Giant, the Age of the Gods, Kingdoms Rise and Sporting Legends series.
I particularly like Playtech’s movie and television series/show tie-ins. Their broad branded slots portfolio includes Gladiator: Road to Rome, The Walking Dead, Breaking Bad Cash Collect & Link, Rocky, RoboCop, The Mummy Books of Amun Ra and Gold Rush: Cash Collect.
Best Playtech Slots, Sites, Demos & Reviews
Push Gaming
Top-Rated Push Gaming Slots
Razor Returns
- OLBG Rating: 4.9
- RTP: 96.55%
- Max Win: 100,000x
- Release Date: 04 Jul 2023
- Provider: Push Gaming
Jammin’ Jars 2
- OLBG Rating: 4.7
- RTP: 96.4%
- Max Win: 50,000x
- Release Date: 02 Jun 2021
- Provider: Push Gaming
Razor Shark
- OLBG Rating: 4.7
- RTP: 96.70%
- Max Win: Infinite/85,475x
- Release Date: 20 Aug 2018
- Provider: Push Gaming
Joker Troupe
- OLBG Rating: 4.6
- RTP: 96.68%
- Max Win: 25,367x
- Release Date: 05 Dec 2019
- Provider: Push Gaming
Established in 2010, Push Gaming is a slot provider focusing on quality rather than quantity. With a mobile-first approach, you’ll know when you’re playing Push Gaming slots due to the unique, high-definition feel of the graphics and animations.
Their most popular games include Razor Shark, Big Bamboo, Fat Rabbit, Fat Santa and The Shadow Order. All their slots use innovative, in-house mechanics and high win potential (Razor Returns pays up to 100,000 x bet).
I love the Jammin’ Jars slots with Jammin’ Jars and Jammin’ Jars 2 two of the most played UK slot games ever. With a new game every month, themes are quirky and unconventional giving them an edge over other slot studios.
Best Push Gaming Slots, Sites, Demos & Reviews
Relax Gaming
Top-Rated Relax Gaming Slots
Money Train 4
- OLBG Rating: 5
- RTP: 96.1%
- Max Win: 150,000x
- Release Date: 20 Sept 2023
- Provider: Relax Gaming
Iron Bank 2
- OLBG Rating: 4.6
- RTP: 96.1%
- Max Win: 50,000x
- Release Date: 10 Dec 2025
- Provider: Relax Gaming
Dead Riders Trail
- OLBG Rating: 4.6
- RTP: 96.2%
- Max Win: 50,000x
- Release Date: 24 Aug 2022
- Provider: Relax Gaming
Cluster Tumble
- OLBG Rating: 4.6
- RTP: 96.4%
- Max Win: 20,000x
- Release Date: 03 Nov 2021
- Provider: Relax Gaming
Releasing slot games since 2018, Relax Gaming has become a major slot provider in a relatively short space of time. With over 100 games to choose from, they are known for their Money Train slot series (with Money Train 4 being the best game as it offers 150,000 x bet max wins).
Relax is known for its Dream Drop jackpot slots where there are over 40 slots in the network as well as several exclusive ones available only at Unibet Casino. Offering progressive jackpot versions of popular slots, there are 5 jackpots to be won with the Mega Jackpot guaranteed to pay out before it reaches €3 million. Due to its popularity, other slot providers have created Dream Drop games.
There are plenty of superb Relax Gaming slots to enjoy with the likes of Dead Riders Trail, Ancient Tumble, Beast Mode, Space Miners and Cluster Tumble to name a few. They even have a ‘Book of’ slot (Book of 99) with an unprecedented 99% RTP rate.
Best Relax Gaming Slots, Sites, Demos & Reviews
Hacksaw Gaming
Top-Rated Hacksaw Gaming Slots
Donut Division
- OLBG Rating: 4.7
- RTP: 96.30%
- Max Win: 12,500x
- Release Date: 12 Dec 2024
- Provider: Hacksaw Gaming
Hand of Anubis
- OLBG Rating: 4.7
- RTP: 96.24%
- Max Win: 10,000x
- Release Date: 21 Apr 2022
- Provider: Hacksaw Gaming
Le Cowboy
- OLBG Rating: 4.6
- RTP: 96.28%
- Max Win: 25,000x
- Release Date: 06 Nov 2025
- Provider: Hacksaw Gaming
Bullets and Bounty
- OLBG Rating: 4.5
- RTP: 96.27%
- Max Win: 20,000x
- Release Date: 21 Aug 2025
- Provider: Hacksaw Gaming
Founded in 2017, Hacksaw Gaming has established itself as one of the top slot providers in recent years. With amazing graphics, concepts and soundtracks, their mobile-first slots are amongst the most popular at UK slot sites and for good reason.
The best Hacksaw Gaming slots include Chaos Crew 2, Hand of Anubis, Fire My Laser, 2 Wild 2 Die, Stormforged and Donut Division. Hacksaw is also responsible for in-house mechanics such as DuelReels, Echospins, Hoppers, Super Cascades and the unique use of wild multipliers. I also recommend checking out their 'Le' series which include numerous games based on the adventures of Smokey the Raccoon.
I love Hacksaw’s Best of Bonus feature which can be found in several games. You get the play the main bonus feature 3 times in succession with the best outcome awarded. A personal favourite, Hacksaw Gaming slot games are worth your time.
Best Hacksaw Slots, Sites, Demos & Reviews
ELK Studios
Top-Rated ELK Studios Slots
Pirots 5
- OLBG Rating: 4.8
- RTP: 96%
- Max Win: 10,000x
- Release Date: 23 Jul 2026
- Provider: ELK Studios
Nitropolis 5
- OLBG Rating: 4.8
- RTP: 94%
- Max Win: 50,000x
- Release Date: 23 Jul 2024
- Provider: ELK Studios
Reindeer Royale
- OLBG Rating: 4.5
- RTP: 94%
- Max Win: 25,000x
- Release Date: 03 Dec 2024
- Provider: ELK Studios
Nitropolis 4
- OLBG Rating: 4.5
- RTP: 94%
- Max Win: 50,000x
- Release Date: 23 Feb 2023
- Provider: ELK Studios
Established in 2013, ELK Studios has come a long way since their first slot game Electric Sam was released. With a mobile-first approach, there are over 100 ELK slots to play. Known for their Cluster Pays games, their games have a unique visual style.
Some of their best titles include Rabbit Royale, Propaganda, Avalon Gold, Taco Brothers Derailed and Coba. ELK Studios are known for their slot series: the Cygnus and Pirots series are very popular.
However, nothing tops their extensive range of Nitropolis slots. With 5 main slots and various spin-offs featuring several clans, you head to a post-apocalyptic world for big win potential and unique mechanics such as Nitro Reels and Nitro Boosters. The only downside is that all their slot games in recent years have an RTP rate of 94%.
Best ELK Studios Slots, Sites, Demos & Reviews
Blueprint Gaming
Top-Rated Blueprint Gaming Slots
Primal Megaways
- OLBG Rating: 4.5
- RTP: 96.76%
- Max Win: 50,000x
- Release Date: 22 Nov 2018
- Provider: Blueprint Gaming
Game of Thrones
- OLBG Rating: 4.4
- RTP: 94%
- Max Win: 17,000x
- Release Date: 26 Mar 2026
- Provider: Blueprint Gaming
The Goonies Return
- OLBG Rating: 4.3
- RTP: 96%
- Max Win: 50,000x
- Release Date: 30 Sept 2021
- Provider: Blueprint Gaming
The Goonies
- OLBG Rating: 4.2
- RTP: 96%
- Max Win: 10,000x
- Release Date: 25 Oct 2018
- Provider: Blueprint Gaming
Found at most UK casinos and slot sites, Blueprint Gaming was founded in 2001 and is focused on UK players. With over 200 slot games to choose from, they offer a massive portfolio of branded slots based on movies, television shows and sporting icons: games include Ted Megaways, The Goonies, The Flintstones, Deal or No Deal Megaways and Maradona El Pibe.
Blueprint Gaming is best known for its Fishin’ Frenzy slots. These much-loved fishing-themed games paved the way for Pragmatic Play’s Big Bass series and there are new additions regularly. Blueprint also has a Jackpot King network which offers jackpot versions of popular games. They are local progressive jackpots which are for each casino or casino group.
Finally, Big Time Gaming may have invented Megaways but Blueprint Gaming has a bigger Megaways slots portfolio than any other slot provider. The best games to use the shape-shifting mechanic include Diamond Mine Megaways, The Goonies Megaways and Vikings Unleashed Megaways.
Best Blueprint Gaming Slots, Sites, Demos & Reviews
Print Studios
Top-Rated Print Studios Slots
Royal Potato 2
- OLBG Rating: 4.8
- RTP: 96.26%
- Max Win: 40,000x
- Release Date: 28 Sept 2023
- Provider: Print Studios
Tarasque
- OLBG Rating: 4.7
- RTP: 96.3%
- Max Win: 20,000x
- Release Date: 22 Feb 2024
- Provider: Print Studios
Darkness
- OLBG Rating: 4.7
- RTP: 96.14%
- Max Win: 20,000x
- Release Date: 19 Oct 2023
- Provider: Print Studios
Royal Potato
- OLBG Rating: 4.7
- RTP: 96.31%
- Max Win: 30,000x
- Release Date: 01 Dec 2021
- Provider: Print Studios
Founded as recently as 2020, Print Studios offers superb slot games which are unique, immersive and appealing. With unique mechanics such as SuperSpinners, they are probably the best-looking slots you’ll ever come across.
Print games became popular with the release of Royal Potato which takes you to a wonderful world of potatoes. With a sequel available which offers 40,000 x bet max wins, they offer terrifying slots in Darkness and Dreadworks where you can choose how dark the game appears.
Other great Print Studios slots include Reapers, Holy Hand Grenade, Shinobi Spirit and Eldritch Dungeon. They are best known for their Pine of Plinko series which comes with a unique Plinko bonus game.
Best Print Studios Slots, Sites, Demos & Reviews
Thunderkick
Top-Rated Thunderkick Slots
Pink Elephants Trinity
- OLBG Rating: 4.5
- RTP: 96.18%
- Max Win: 14,400
- Release Date: 12 Nov 2025
- Provider: Thunderkick
Esqueleto Explosivo 3
- OLBG Rating: 4.3
- RTP: 94.22%
- Max Win: 7,500x
- Release Date: 23 Oct 2024
- Provider: Thunderkick
Midas Golden Touch
- OLBG Rating: 4.3
- RTP: 96.1%
- Max Win: 10,196x
- Release Date: 10 Apr 2019
- Provider: Thunderkick
Hellapeños
- OLBG Rating: 4.2
- RTP: 96.18%
- Max Win: 5,000x
- Release Date: 06 Dec 2023
- Provider: Thunderkick
Founded in 2012, Thunderkick is an online slot provider with a unique minimalist/Swedish style. Completely independent, there are more than 90 Thunderkick slots to choose from. Available at most slot sites in the UK and beyond, there is an abundance of themes, mechanics, bonus features and max win potential. All games share the same minimum bet of just 10p per spin.
I particularly like Pink Elephants 2 which has a mysterious feel and sees symbols transform eventually into the Pink Elephant which can lead to 10,000 x bet max wins. With various slots series, I recommend you try Midas Golden Touch, Sword of Khans, 1429 Uncharted Seas and Hot Potato. Thunderkick also release new slot games every month.
Thunderkick Slots, Sites, Demos & Reviews
Novomatic
Top-Rated Novomatic Slots
Book of Ra Deluxe
- OLBG Rating: 4.5
- RTP: 95.1%
- Max Win: 5,000x
- Release Date: 11 Apr 2008
- Provider: Novomatic
Lord of the Ocean
- OLBG Rating: 4.2
- RTP: 95.1%
- Max Win: 5,000x
- Release Date: 15 Jun 2008
- Provider: Novomatic
From Dusk Till Dawn
- OLBG Rating: 4
- RTP: 95%
- Max Win: 21,000x
- Release Date: 15 Jun 2018
- Provider: Novomatic
Dolphin’s Pearl Deluxe
- OLBG Rating: 4
- RTP: 95.13%
- Max Win: 27,000x
- Release Date: 13 Aug 2014
- Provider: Novomatic
Founded in 1980, Novomatic is a land-based slot and casino provider with their games also available online. With their online division known as Greentube, they are responsible for thousands of slot games with most of them only available in bricks and mortar casinos. With over 400 Novomatic slots online, you won't find them at all UK slot sites so bear that in mind.
Of all Novomatic slots online, the most popular is undoubtedly Book of Ra Deluxe which is responsible for the wave of 'Book of' slots you'll discover today online. Other popular titles include Lord of the Ocean, Lucky Lady's Charm Deluxe, Captain Venture and Sizzling Hot Deluxe. Graphically, there aren't as sharp as online-focused studios but they do offer a sense of nostalgia and a land-based feel.
Novomatic Slots, Sites, Demos & Reviews
IGT
Top-Rated IGT Slots
Cleopatra
- OLBG Rating: 5
- RTP: 95.02%
- Max Win: 10,000x
- Release Date: 11 Jan 2012
- Provider: IGT
Cleopatra 2
- OLBG Rating: 4.5
- RTP: 95.88%
- Max Win: 50,000x
- Release Date: 14 Jun 2014
- Provider: IGT
Da Vinci Diamonds
- OLBG Rating: 4.5
- RTP: 94.94%
- Max Win: 5,000x bet
- Release Date: 21 Jan 2012
- Provider: IGT
Dyn-A-Miners
- OLBG Rating: 4.2
- RTP: 96.53%
- Max Win: 10,000x
- Release Date: 06 Mar 2023
- Provider: IGT
Founded way back in 1975, IGT is primarily a land-based provider with their slot games in Las Vegas casinos. Also available online under their PlayDigital umbrella, IGT slots are very popular in the UK in particular. With classics such as Cleopatra, Da Vinci Diamonds and Pharaoh's Fortune, they also have newer releases including Skeleton Key, Cash Eruption and Wheel of Fortune Megaways.
I love how IGT are still releasing Las Vegas favourites from yesteryear and offering sequels, spin-offs and jackpot versions. If you're after progressive jackpots, their MegaJackpots slots series offers jackpot versions of their most loved games. With a guarantee of £500,000, the real-time jackpot stands at £642,334.49.
Best IGT Slots, Sites, Demos & Reviews
Light & Wonder
Top-Rated Light & Wonder Slots
Rainbow Riches
- OLBG Rating: 4.5
- RTP: 95%
- Max Win: 500x
- Release Date: 29 May 2009
- Provider: Light & Wonder
Huff N’ Even More Puff Grand
- OLBG Rating: 4
- RTP: 96.05%
- Max Win: 10,000x
- Release Date: 09 Mar 2026
- Provider: Light & Wonder
300 Shields Mighty Ways
- OLBG Rating: 4
- RTP: 96%
- Max Win: 30,000x
- Release Date: 22 Sept 2022
- Provider: Light & Wonder
Invaders Megaways
- OLBG Rating: 4
- RTP: 96.3%
- Max Win: 75,798x
- Release Date: 15 Jun 2021
- Provider: Light & Wonder
Established way back in 1973, Light & Wonder was formerly known as Scientific Games and is one of the biggest land-based slot providers in the world. Under the L&W umbrella, you'll find Las Vegas favourites from WMS, NextGen Gaming, Barcrest and Bally's as well as newer, online releases.
The best Light & Wonder slots include Rainbow Riches (the UK's most popular slot game), Wizard of Oz Ruby Slippers, Raging Rhino and Zeus amongst others. You'll also find more modern adaptations of land-favourites with the likes of Medusa Megaways, 300 Shields Mighty Ways and Invaders Megaways. More recently, you have the Huff N' Puff series that is very popular in land based casinos too.
If you've ever visited Las Vegas casinos and want the best of legendary games combined with innovative mechanics, Light & Wonder games are for you.
Light & Wonder Slots, Sites, Demos & Reviews
4ThePlayer
Top-Rated 4ThePlayer Slots
90k Yeti Gigablox
- OLBG Rating: 4.6
- RTP: 95.5%
- Max Win: 90,000x
- Release Date: 01 Nov 2021
- Provider: 4ThePlayer
4 Fantastic Vikings Go Fishing
- OLBG Rating: 4.5
- RTP: 94%
- Max Win: 12,500x
- Release Date: 29 Oct 2024
- Provider: 4ThePlayer
5k Gold Mine Dream Drop
- OLBG Rating: 4.5
- RTP: 94%
- Max Win: 5,500x
- Release Date: 14 Apr 2023
- Provider: 4ThePlayer
10000 BC 2 DoubleMax
- OLBG Rating: 4.3
- RTP: 94%
- Max Win: 10,000x
- Release Date: 28 Nov 2024
- Provider: 4ThePlayer
Formed in 2018, 4ThePlayer is a UK-based slot provider. All their slot games begin with a number ensuring they remain in pole positions in casino and slot site lobbies. Mobile-focused, you can play 4ThePlayer slots on a smartphone device using Big Reel Portrait Mode: this occupies up to 80% of your screen for a superior playing experience.
The best 4ThePlayer games include 9k Yeti, 10000 BC 2 DoubleMax, 7x7 Zeus and 21 Thor Lightning Ways. With several unique mechanics, I particularly love the 90k Yeti Gigablox slot which offers 90,000 x bet max wins. Another good game is 4 Fantastic Vikings Go Fishing which is a collaboration between 4ThePlayer and Yggdrasil Gaming.
Finally, 4ThePlayer also offers you 2 Dream Drop jackpot slots: 5 Doggy Millionaires Dream Drop and 5k Gold Mine Dream Drop. The latter paid out €2.3 million back in April 2023.
Best 4ThePlayer Slots, Sites, Demos & Reviews
Yggdrasil Gaming
Top-Rated Yggdrasil Gaming Slots
Gods vs Gigablox
- OLBG Rating: 4.2
- RTP: 96%
- Max Win: 10,225x
- Release Date: 05 Dec 2022
- Provider: Yggdrasil
Vikings Go Berzerk Reloaded
- OLBG Rating: 4.1
- RTP: 96%
- Max Win: 25,000x
- Release Date: 30 Sept 2021
- Provider: Yggdrasil
Candyfinity
- OLBG Rating: 4
- RTP: 96%
- Max Win: 38,837.3x
- Release Date: 08 Jun 2023
- Provider: Yggdrasil
Cazino Zeppelin Reloaded
- OLBG Rating: 4
- RTP: 96%
- Max Win: 102,838x
- Release Date: 27 Jan 2022
- Provider: Yggdrasil
Founded in 2013, Yggdrasil Gaming is an independent slot provider with over 120 slot games. Available at most UK casino and slot sites, they focus on unique, in-house mechanics such as GigaBlox, GigaRise, DoubleMax and Splitz amongst many others.
Popular Yggdrasil Gaming slots including the Vikings series which is a range of Norse mythology-themed games where vikings clash for wilds, multipliers and big win potential.
Yggdrasil also offer many darker-themed slots focusing on the underworld as well as werewolves and the apocalypse. I particularly like Cazino Zeppelin Reloaded which is a steampunk-inspired game which comes with 102,838 x bet max wins.
Yggdrasil Gaming Slots, Sites, Demos & Reviews
Red Tiger
Top-Rated Red Tiger Slots
Blood Suckers Megaways
- OLBG Rating: 4.8
- RTP: 97.66%
- Max Win: 20,521.9x
- Release Date: 26 Jan 2023
- Provider: Red Tiger
Gonzo's Quest Megaways
- OLBG Rating: 4.5
- RTP: 96%
- Max Win: 21,000x
- Release Date: 23 Jul 2020
- Provider: Red Tiger
Santa Spins
- OLBG Rating: 4.2
- RTP: 95.73%
- Max Win: 995x
- Release Date: 07 Dec 2022
- Provider: Red Tiger
Trillionaire Megaways
- OLBG Rating: 4
- RTP: 95.68%
- Max Win: 35,841x
- Release Date: 20 Mar 2025
- Provider: Red Tiger
Founded in 2014, Red Tiger is part of the Evolution Gaming Group (which includes Nolimit City, NetEnt and Big Time Gaming). With more than 300 slot games to play, Red Tiger slots are available to play for real money at most slot and casino sites. The minimum bet for most titles starts at 10p a spin.
With close ties to NetEnt, they released Megaways versions of Piggy Riches and Gonzo's Quest as well as offering plenty of branded slots such as Joe Exotic, Narcos Mexico and Trillionaire. Covering every theme, mechanic and bonus feature possible, you have the chance to win daily jackpots with Red Tiger's Daily Drop Jackpots. In terms of their best games, I like Judgement Day Megaways (100,000 x bet max wins) and Blood Suckers Megaways (97.66% RTP rate).
Red Tiger Slots, Sites, Demos & Reviews
Slotmill
Top-Rated Slotmill Slots
Lucy Luck and the Quest for Coins
- OLBG Rating: 4.4
- RTP: 96.01%
- Max Win: 20,000x
- Release Date: 10 Feb 2026
- Provider: Slotmill
Tyrant’s Fall
- OLBG Rating: 4.3
- RTP: 96.03%
- Max Win: 10,000x
- Release Date: 16 Apr 2024
- Provider: Slotmill
Coin Quest 2
- OLBG Rating: 4.3
- RTP: 96.18%
- Max Win: 15,000x
- Release Date: 14 Dec 2022
- Provider: Slotmill
Last Man Standing
- OLBG Rating: 4.2
- RTP: 96.12%
- Max Win: 10,000x
- Release Date: 28 Jan 2025
- Provider: Slotmill
Founded in 2019, Slotmill is an independent provider focusing on quality rather than quantity. With over 40 slots, they offer lightning-fast gameplay, HD visuals, and mobile-first design.
Using in-house mechanics and concepts, their best games include Brew Brothers, Coin Quest 2, Tyrant's Fall and Last Man Standing. The guide highlights the key facts such as the highest RTP and max win slots.
Slotmill Slots, Sites, Demos & Reviews
Quickspin
Top-Rated Quickspin Slots
Cash Truck
- OLBG Rating: 4.4
- RTP: 96%
- Max Win: 25,000x
- Release Date: 11 Jan 2022
- Provider: Quickspin
Big Bad Wolf Megaways
- OLBG Rating: 4.1
- RTP: 96.05%
- Max Win: 30,540x
- Release Date: 14 Sept 2021
- Provider: Quickspin
Sakura Fortune 2
- OLBG Rating: 4
- RTP: 96.03%
- Max Win: 19,664.8x
- Release Date: 12 Apr 2022
- Provider: Quickspin
Book of Duat
- OLBG Rating: 4
- RTP: 96.27%
- Max Win: 32,760.5x
- Release Date: 09 Nov 2021
- Provider: Quickspin
Founded in 2011 and part of Playtech, Quickspin is a slick and innovative slot provider with over 125 games. Offering a variety of themes, mechanics and bonus features, Quickspin slots have a unique look and feel.
The top Quickspin games including Cash Truck, Big Bad Wolf Megaways, Wild Luchador, Book of Duat and Sakura Fortune 2. The guide goes through the top 10 games in greater detail.
Quickspin Slots, Sites, Demos & Reviews
Shady Lady
Top-Rated Shady Lady Slots
Mortal Bromance
- OLBG Rating: 4.6
- RTP: 96.28%
- Max Win: 20,000x
- Release Date: 22 May 2026
- Provider: Shady Lady
Preach TV
- OLBG Rating: 4.6
- RTP: 96.21%
- Max Win: 20,000x
- Release Date: 23 Apr 2026
- Provider: Shady Lady
Truth
- OLBG Rating: 4.6
- RTP: 96.1%
- Max Win: 20,000x
- Release Date: 26 Mar 2026
- Provider: Shady Lady
Devil’s Finger
- OLBG Rating: 4.6
- RTP: 96.4%
- Max Win: 20,000x
- Release Date: 17 Mar 2025
- Provider: Shady Lady
Founded in 2024, Shady Lady is an independent slots studio that aims to shake things up and create games that matter. With a handful of slots, they are not available to play for real money in the UK right now.
Offering odd themes, quirky humour and innovative mechanics and bonus features, Shady Lady slots are unique hard to ignore. With reviews and free demos of all games, they are on the higher end in terms of volatility, catering to the more seasoned player.
Shady Lady Slots, Sites, Demos & Reviews
Eyecon
Top-Rated Eyecon Slots
Fluffy Favourites
- OLBG Rating: 4.5
- RTP: 95.39%
- Max Win: 5,000x
- Release Date: 14 Sept 2006
- Provider: Eyecon
Fluffy Favourites Megaways
- OLBG Rating: 4
- RTP: 94.99%
- Max Win: 29,217x
- Release Date: 03 Mar 2021
- Provider: Eyecon
Fruity Burst 2
- OLBG Rating: 3.8
- RTP: 95.3%
- Max Win: 10,000x
- Release Date: 20 Sept 2022
- Provider: Eyecon
Shaman’s Dream 2
- OLBG Rating: 3.8
- RTP: 95.56%
- Max Win: 28,500x
- Release Date: 12 Oct 2020
- Provider: Eyecon
Founded in 1997, Eyecon is a long-established UK slot developer known for colourful, approachable slots with simple gameplay and nostalgic appeal. Their games often focus on medium-to-high volatility, modest RTPs (typically mid-90s), engaging themes (animals, fantasy, Native American, etc.), and bonus features like free spins, multipliers, retriggers, and pick-me/gamble-style extras.
Key series include Fluffy Favourites (including Megaways and other variants) and standalone hits like Shaman’s Dream 2. Many Eyecon slots allow low minimum bets (often from 25p a spin), with strong max win potential. They frequently include retriggers or progressive free spins caps (e.g. up to 400 free spins) for bonus rounds.
Eyecon Slots, Sites, Demos & Reviews
Other Slot Providers
With over 100 online slot game developers, OLBG will publish in-depth guides to the most popular ones in due time. In future, you can expect guides for the following studios:
- Games Global (formerly Microgaming)
- Peter & Sons
- Inspired Gaming
- Wicked Games
- Sneaky Slots
- Iron Dog Studio
How to Choose the Right Slot Provider
A slot provider (also called a slot studio, casino game developer or software provider) is the company that designs and builds slot games for online and land-based casinos. With hundreds to choose from, here’s what matters when you’re deciding which studio’s games to play:
- UKGC licensing: Every provider serving UK players needs a UK Gambling Commission licence, which means their games are independently tested for fairness by houses such as eCOGRA, iTechLabs and BMM Testlabs. See the Gambling Commission’s test-house guidance for details.
- RTP and RTP versions: A good studio publishes clear RTP figures, but remember most ship several RTP versions of the same game, and the casino or slot site picks which to offer. Always check the RTP in the game’s own paytable/info section, and favour sites that offer the top version.
- Volatility range: The best providers offer a spread of volatility levels so you can match games to your bankroll and session length. High-volatility studios like Nolimit City suit bigger risk appetites: others pay little and often.
- Mechanics and innovation: Signature mechanics (Megaways, Cluster Pays, xWays) are what make a studio stand out. Innovation usually signals a developer worth following.
- Mobile and interface: Games should be built in HTML5 for any device, with clear buttons and easy access to the paytable, rules and RTP. Portrait modes are a plus.
- Portfolio and availability: A deep catalogue and wide availability across sites give you more choice. Playing at a site that carries several providers is the simplest way to keep your options open.
Safety, Security & Fair Play
Every legitimate slot studio serving UK players operates under a UK Gambling Commission licence, which requires their games and random number generators (RNGs) to be independently tested for fairness before they go live. That testing is carried out by accredited houses including eCOGRA, iTech Labs, BMM Testlabs and GLI. When a provider’s games carry certification from one of these labs, it means the advertised RTP and the odds of hitting features have been verified against the studio’s stated maths: the game behaves the way the paytable says it should.
For you as a player, the practical checks are simple: look for the UKGC licence and test-house seals in the game info or casino footer, confirm the RTP shown in the game’s own info screen (remember providers ship multiple RTP versions), and only play at sites that display their licensing clearly. Our slot testing methodology explains how we verify these figures ourselves.
