Regardless of which online casino you play in the UK, the same slots are always the most popular. Some games have achieved a near-cult status among UK players.
According to a recent report by the UK Gambling Commission, UK players tend to favour slots with high RTP (Return to Player) rates, exciting bonus features, and visually engaging themes. These preferences help explain why certain slots dominate the charts year after year. Below, we have handpicked five of the most popular slots at the online casinos and mobile gambling apps we feature.
Top 5 Most Popular Online Slots in the UK
Starburst
“Starburst” is like the bread and butter of online slots and is found at nearly every online casino. Developed by NetEnt. The game has an RTP (Return to Player) of 96.09% and features 10 paylines that pay out both ways.
The “Starburst Wild” feature is a big attraction, expanding to cover an entire reel and triggering a respin. With its low volatility, “Starburst” provides frequent, smaller wins that keep players entertained. The bright and colourful cosmic theme and smooth animations make it visually engaging, while the straightforward mechanics ensure everyone can jump right in.
Play this slot at bet365 casino online – use code 365GMBLR, claim your free spins.
Rainbow Riches
“Rainbow Riches” by Barcrest is an iconic slot in the UK, particularly popular for its Irish theme, which includes leprechauns, pots of gold, and bonus rounds like “Road to Riches.” This slot offers an RTP of 95% and features 20 paylines. The multiple bonus features, such as the “Wishing Well” and “Pots of Gold” bonuses, are undoubtedly big reasons why this slot has remained so popular.
You can play this slot for real money by using 10bet online casino.
Gonzo’s Quest
“Gonzo’s Quest” by NetEnt takes you on an adventure with Gonzo, a quirky Spanish conquistador, on a mission to find El Dorado, the lost city of gold. This slot stands out with its innovative “Avalanche” feature, where symbols drop from above and winning combinations explode, allowing new symbols to fall into place for potential consecutive wins. This slot has an RTP of 95.97% and 20 fixed paylines with medium to high volatility. “Gonzo’s Quest” is often featured in slot tournaments at casinos like Magic Red, making it a fan favourite.
Visit GrosvenorCasinos to play this online slot.
Big Bass Bonanza
“Big Bass Bonanza” by Pragmatic Play has quickly become a hit among UK players who love a good fishing adventure. This 5-reel slot has an RTP of 96.71% and features 10 paylines with medium volatility. The simplicity of the game is one of its biggest draws. The bonus round, where you try to catch fish with cash prizes, adds a unique twist that keeps players hooked.
For this game, we recommend a new Buzz casino and the bonus spins they offer.
Book of Dead
“Book of Dead” by Play’n GO is a slot that has earned a legendary status among UK players. Featuring high volatility, this game has an RTP of 96.21% and 10 adjustable paylines. Players follow Rich Wilde, an adventurer, on a quest for treasures in an ancient Egyptian tomb. The slot’s allure lies in its high-risk, high-reward gameplay, where the free spins feature with expanding symbols offers the chance for massive payouts.
Play Book of Dead slot hit at Rialto online casino with a welcome offer for UK players.
Top Payout Online Slots in the UK: RTP, Producers, and Where to Play
| Slot | Producer | RTP% | Casino to Play |
|---|---|---|---|
| Starburst | NetEnt | 96.09% | bet365 – use code 365GMBLR for 50 free spins |
| Rainbow Riches | Barcrest | 95% | 10bet Casino |
| Gonzo’s Quest | NetEnt | 95.97% | GrosvenorCasinos |
| Big Bass Bonanza | Pragmatic Play | 96.71% | Buzz Casino |
| Book of Dead | Play’n GO | 96.21% | Rialto Casino |
Recommended Slot Sites for UK Players
Buzz Casino
1st Deposit only. Dep & stake £10 on slots for 200x10p Fire Blaze™ Blue Wizard™ Megaways™ bonus spins. Wagering applies. 18+, GambleAware.org.
10Bet Casino
10bet casino promo up to £250 in a 50% deposit match. Terms: New Customers only; Use code CASINO upon deposit (no Skrill/Neteller); Wager bonus 50x to release bonus winnings; Valid 30 days; Stake contribution and payment method exclusions apply; T&C apply. 18+, GambleAware.org.
Spin&Win
Spin and Win casino promo terms: 1st dep offer code CGSPIN. Minimum 1st dep of £10 to get £100% up to £250 on selected match slots & 100 Free Spins (FS) on Blueprint slots at 0.20P. Deposit Bonus Playable on selected Slots. 40x wagering requirement (Dep + Bonus) & MCR x5 for Bonus. FS and FS winnings are playable on Blueprint slots only, FS: 50xWR & Max win £50. Full T&Cs apply. 18+, GambleAware.org.
Rialto
Rialto casino bonus terms: Use code CGRIALTO. Min dep. £20 for up to £100, 50x wr on deposit + bonus plus 100 free spins credited instantly. Winnings capped at 5x bonus amount. Free Spins capped at £10 and carry 25x wr. Valid until further notice. Full T&Cs apply. 18+, GambleAware.org.
The Vic
The Vic casino promo terms: New players only. Code CGVIC required on a minimum deposit of £20 for up to £100 bonus + max 20 Free Spins valid for 7 days. Bonus playable on *selected slots*. Wagering requirements on bonus is 50x (deposit+bonus), max convertible rate from bonus is 5x. Free spins & winnings playable selected *Lady’s Charm Deluxe*, wagering requirements on free spins is 35x, maximum convertible amount from free spins is £30. 18+ only. Valid until further notice. Full T&C’s apply. 18+, GambleAware.org.
bet365
bet365 Bonus Terms. Promo code for free spins is 365GMBLR. New UK customers only. Min deposit £10. Bet Credits available for use upon settlement of bets to value of qualifying deposit. Min odds, bet and payment method exclusions apply. Returns exclude Bet Credits stake. Time limits and T&Cs apply. The bonus code 365GMBLR can be used during registration, but does not change the offer amount in any way. 18+, GambleAware.org.
Lottoland Casino
Lottoland casino bonus code offer provides new players with a 50 no-wager free spins: Terms: new customers only, register, deposit and stake £10 on Big Bass Bonanza within 7 days, and claim 50 Free spins on Big Bass Bonanza. Free spins expire 30 days after credited. Full T&Cs Apply. 18+, GambleAware.org.
BARZ
The Barz Casino Welcome Offer is a 100% match of your initial deposit up to a value of £300, with 50 Bonus Spins on Starburst thrown in. The minimum deposit amount is £20 and the maximum size of bet with the bonus is £5. All winnings from the bonus spins are capped at £20 and they must be used within 72 hours. The Bonus fund will disappear after 30 days, if unused. The Bonus and the Bonus Spins are subject to a 40x wagering requirement before any winnings can be withdrawn. 18+, GambleAware.org.
Virgin Games
New members only, must opt in. Min £10 deposit & wager within 30 days from registration. Free Spins: on Double Bubble. 30-day expiry from credit. 1p coin size, max lines. Bingo: Advertised ticket value based on £1 tickets. Game availability & restrictions apply. 18+, GambleAware.org.
