The UK’s Best Slots Games and Where to Play Them 2025

These are added to online casinos on a near daily basis and playing them is a good way to try out the latest features devised by software providers and enjoy recent releases in popular slots franchises, such as the Big Bass and Rich Wilde series. If you’re looking for something different from traditional slots gameplay, new slots are normally the best place to start.

🕵️ Expert recommendation: Big Bass Reel Repeat is the latest addition to the series by Pragmatic Play. Aside from the sci-fi retro theme, it also adds the chance to trigger the new MEGA modifier not available on other Big Bass titles, which doubles the progressive multipliers, adds more instant cash symbols and makes it easier to progress through the four levels during free spins.

Certain slots feature a live top prize that constantly increases with every real money bet wagered on the game until it’s won by one lucky player. These progressive jackpots regularly hit seven or eight figures, and in fact, the biggest ever single win at a UK gambling site happened in October 2015 when Jon Haywood won the £13.2 million jackpot on Mega Moolah.

🕵️ Expert recommendation: The increased top prizes on progressive slots mean they’re often balanced with lower RTPs (such as Mega Moolah’s 88.12% payout rate). However, Age of the Gods Norse: King of Asgard has a 96.67% RTP with low volatility, meaning you can still expect fairly frequent payouts as you try and win one of the three jackpots, which include a prize that is triggered daily.

Launched by Big Time Gaming in 2015, these use a special reel layout whereby each of the six reels can display anything from two to seven symbols on every spin. Most Megaways slots therefore offer up to a massive 117,649 ways to win and also use the cascading reels feature to replace winning symbols, allowing you to land multiple payouts on the same spin.

🕵️ Expert recommendation: With a maximum of 2,985,984 paylines, Rasputin Megaways’ free spins bonus round offers the most potential ways to win on any slot game at UK online casinos. With an eye-catching top prize of 67,330x your bet, there’s also bigger payouts on the line than popular alternatives like Temple Tumble Megaways (9,627x) and Buffalo King Megaways (5,000x).

While most slots have a top payout between 1,000x to 5,000x your bet, a small number offer the chance to win 100,000x or more. This is possible because they have in-game bonuses involving huge and progressive multipliers that can significantly boost your payouts, meaning even the smallest bets are capable of landing big wins. High multiplier slots are therefore popular with low deposit players wanting to maximise their win potential.

🕵️ Expert recommendation: Nolimit City specialise in big payout slots, and Tombstone Slaughter: El Gordo's Revenge has an unmatched max multiplier of 500,000x. With an expandable six-reel layout that offers a starting level of 324 paylines, it also comfortably beats other high multiplier slots like Peking Luck (25) and Starburst XXXtreme (9) for ways to win per spin.

The average return to player (RTP) percentage for online slots is around 96%, so any slot with a higher RTP than this can be expected to pay out more money on average. While you may need thousands of spins to notice the benefit, high RTP slots are still popular with players keen to take advantage of the best win rates. Many UK casinos have slot games boasting RTPs of 98% and more.

🕵️ Expert recommendation: While there are slots with a higher RTP rate than 1429 Uncharted Seas’ 98.60%, none also feature low volatility. The 2017 release by Thunderkick is therefore a useful game to use free spins bonuses on when possible, as it’s expected to produce more winning spins from a small number than the vast majority of other games at slots sites.

Certain slot games allow you to buy in-game bonuses such as free spins at any time for a set price, instead of having to trigger them as normal with scatters. However, online casinos were banned by the UKGC in 2019 from offering such games, as there were concerns they encouraged problem gambling. As a result, you can only play versions of these slots with the bonus buy feature removed.

🕵️ Expert tip: You may notice when playing certain slots in free play mode that the bonus buy features are available. However, this often happens because demo versions are produced for an international audience, so the bonus buy components will be removed when you’re playing for real money at UK casino sites.

Many slots are themed around animals, ranging from those you’ll find on an African safari in Mega Moolah to mischievous bulldogs in The Dog House Megaways. Fishing slots are a particularly popular sub-category on this front, with the Big Bass and Fishin’ Frenzy series among the most popular slots right now at top UK casinos including Winomania.

🕵️ Expert recommendation: The Dog House Megaways has an RTP of 96.55% and max win of 12,305x your bet, meaning the Pragmatic Play release beats other popular animal-themed Megaways slots like Buffalo King Megaways and 5 Lions Megaways on both fronts. This is partially because the free spins mini game features both wild multipliers and sticky wilds on every spin.

There are lots of slot games that take you back to the wild west, with symbols and features based around cowboy and cowgirl outlaws, sheriff’s badges and wanted posters. Often, the reels overlook dusty towns and taverns with upbeat folk-based soundtracks to add to the excitement. Coral has over 15 wild west-themed slots to choose from, including Wild West Bandits and 2 Wild 2 Die.

🕵️ Expert recommendation: Wanted Dead or a Wild by Hacksaw Gaming features the unique DuelReels mechanic, whereby scatters expand to fill the entire reel and award you the higher of two multipliers (which can reach 100x). The top prize of 12,500x offers better maximum returns than other well-known titles like Dead or Alive (12,000x) and Wild West Gold Megaways (5,000x).

You can spin the reels with the luck of the Irish on your side, with lots of slots starring leprechauns, four-leaf clovers, pots of gold and other icons of Irish folklore. The Irish-inspired Rainbow Riches slots series is available at top-rated sites such as Betway Casino and Grosvenor Casino.

🕵️ Expert recommendation: 9 Pots of Gold puts an Irish spin on the cash collect mechanic with the special gold pot symbols, which award an instant prize of up to 2,000x your bet if you get three or more on the same spin. With a generous hit rate of 39.75% (or nearly 2 wins from every 5 spins), it also pays out more frequently than both Clover Fortunes and Book of the Irish.

Ancient Egypt is one of the longest-running slots themes, after initially proving popular at UK casinos with iconic games such as Book of Ra (released back in 2005) and Cleopatra (2012), which are both still among the most played slots by Brits. Today, it’s still going strong thanks to the likes of the Rich Wilde series, which provides fun slots based around pyramids and temples, Egyptian gods, hieroglyphics and more.

🕵️ Expert recommendation: 4 Secret Pyramids by 4ThePlayer not only has a much bigger top payout (55,000x) than staples like Book of Dead (5,000x) and Cleopatra (10,000x), but uses the innovative BonusUp mechanic. That means every time you trigger free spins you get an improved bonus from the time before, up to a maximum of 55 free spins with a 15x multiplier.

There are dozens of online slots set in ancient Greece, featuring symbols and bonuses based around mythical gods such as Zeus and Athena. Among the most popular at UK casinos is Pragmatic Play’s Gates of Olympus series, which has spawned numerous spin-offs such as Gates of Olympus 1000 and Gates of Olympus Super Scatter. Age of the Gods by Playtech is also a beloved progressive jackpot title with slots fans.

🕵️ Expert recommendation: Relax Gaming’s Book of 99 has the joint-highest RTP (99.00%) of any online slot at UK gambling sites, plus a higher max win of 5,000x your bet than its counterpart Mega Joker. Unlike other ancient Greece-themed slots, it also gives you two ways to activate free spins, as you can do so by landing three or more scatters or alternatively filling the progress bar via collecting wilds.

If the likes of ghosts, vampires and dark fantastical characters are your thing, you’re spoilt for choice with the gothic-inspired slots available at UK gambling sites. Many of these boast above average RTPs and maximum wins, most notably Immortal Romance (96.86% RTP and a top prize 12,150x of your bet) and RIP City (96.22% and 12,500x). Software providers such as Hacksaw Gaming specialise in horror-themed slots.

🕵️ Expert recommendation: Madame Destiny Megaways boasts a maximum of 200,704 paylines, putting it in the top 5 Megaways slots with the most ways to win. On top of that, the free spins round comes with multipliers of up to 25x – more than double the 10x you can get on slots renowned for this feature like Big Bass Splash – while wilds automatically double any wins.

Games Global (formerly Microgaming) is one of the largest slots companies worldwide, with a library spanning 1,300 games including poker and baccarat across its various studios. For progressive jackpot fans, its standout title is the Mega Moolah franchise, although its Link & Win mechanic involving bonus rounds with large jackpots has recently proved popular at Games Global casinos on the likes of Bank Vault and Blazing Bison Gold Blitz.

🎰 Number of slots: 1,300+

🔍 Specialises in: Progressive jackpots and Link & Win slots

🤩 Popular Games Global slots: 9 Masks of Fire, Mega Moolah, Gold Blitz Ultimate

As a studio with one of the most diverse slots collections around, you’ll find everything from popular progressive slots like the Age of the Gods series to releases with 99% RTPs such as Ugga Bugga at Playtech casinos. They’ve also released branded titles including Gladiator and The Walking Dead, and invented the Cash Collect mechanic, which awards instant prizes whenever it appears on over 25 slots.

🎰 Number of slots: 700+

🔍 Specialises in: High RTP slots

🤩 Popular Playtech slots: Age of the Gods, Buffalo Blitz, Ugga Bugga

NetEnt are known for releasing slots that upgrade the gameplay with simple yet entertaining mechanics, such as the win both ways paylines on Starburst and Secrets of Atlantis and Infinireels expanding feature on Gods of Gold. They introduced cascading reels, which you can take advantage of on various titles at NetEnt casinos, including several in the studio’s most popular franchise Gonzo’s Quest.

🎰 Number of slots: 200+

🔍 Specialises in: Unique slots mechanics

🤩 Popular NetEnt slots: Gonzo’s Quest, Starburst, Mega Joker

Pragmatic Play’s portfolio of over 400 slots most notably includes the Big Bass series, which has grown into a franchise featuring nearly 30 games since the original Big Bass Bonanza was released in 2020. The studio has over 45 Megaways slots to its name like Buffalo King Megaways and Madame Destiny Megaways, which both offer up to 200,704 ways to win.

🎰 Number of slots: 400+

🔍 Specialises in: Slots franchises and Megaways slots

🤩 Popular Pragmatic Play slots: Big Bass Splash, Gates of Olympus, 5 Lions Megaways

Play’n GO has released slots available to play in over 30 countries and is widely regarded as a mobile slots pioneer, having won Mobile Supplier of the Year at the 2023 5Star Media Starlet Awards. While they are arguably best known for the Rich Wilde series, UK players also enjoy Play’n GO grid slots such as Gigatoonz and many that allow you to gamble your winnings on successful spins.

🎰 Number of slots: 325+

🔍 Specialises in: Mobile and grid slots

🤩 Popular Play’n GO slots: Book of Dead, Reactoonz, Rise of Olympus

Hacksaw Gaming’s eye-catching portfolio includes lots of titles offering high volatility, large maximum wins and feature-heavy bonus rounds, as well as unique mechanics such as SwitchSpins and LootLines. It releases an average of two games every week, while its beloved Smokey the raccoon character stars in the likes of Le King and Le Pharaoh.

🎰 Number of slots: 185+

🔍 Specialises in: High volatility slots

🤩 Popular Hacksaw Gaming slots: RIP City, Wanted Dead or a Wild, Le Bandit