What is the best slot to play on mobile?

There's no single best slot, because it depends on what you enjoy and how much variance you're comfortable with. Low-volatility games such as Starburst pay smaller amounts more often, while high-volatility games such as Book of Dead pay less often but can pay more. Compare RTP, volatility and maximum win in each review. Read what is the best slot to play on mobile and the high RTP slot apps list.

Is slot RTP lower on casino apps?

No, not by default. A slot's RTP is set by the version the casino runs, and the same version returns the same on an app or a website. Some slots come in several RTP versions, though, so check the game's help or information screen for the figure that applies. Our answer to is RTP lower on casino apps and the guide to finding a game's RTP in an app explain how.

What is the maximum stake on UK online slots?

The maximum is £5 per spin for players aged 25 and over, in force since 9 April 2025, and £2 per spin for players aged 18 to 24, since 21 May 2025. The limits apply to online slots only, not to table games or live casino. Apps check your age from your verified details. See our page on online slot stake limits and what is the slot stake limit on apps.

Why do slots spin slower on UK casino apps?

UK rules require every online slot spin to last at least 2.5 seconds, and they ban turbo, quick spin and slam-stop features. The rules came in on 31 October 2021 to slow the pace of play and reduce the risk of harm. The same rules ban autoplay. Read why do slots spin slower on UK apps and what is the 2.5 second rule.

Can I buy a bonus feature on a UK slot?

No. Since a Gambling Commission warning in January 2020, feature buy-ins are not offered to British players, so UK versions of slots with a bonus buy elsewhere don't include that option. You reach the bonus round only by landing it in normal play. Our page on online game design rules explains the wider rules, and the free spins glossary entry covers how bonus rounds work.

Can I play slots for free on a casino app?

Some UK casino apps offer demo play, but age verification is required before you can play free-to-play demo games, just as for real money. Demo play uses no money and pays nothing, so it's a useful way to learn a game's features. See can I play slots for free on a casino app and our guide to demo mode on casino apps.

Mobile Slot Reviews UK: RTP, Volatility and Features

What our mobile slot reviews include

Every one of our mobile slot reviews starts with a specification table: developer, RTP, volatility, layout, ways to win and maximum win, taken from the developer's published information. We then explain the main feature in plain words, work out what the game costs at different stakes and cover how it plays on a phone.

We never quote hit rates or bonus frequencies from third-party listings, because they're often estimates. Where a slot comes in more than one RTP version, the review says so, as with Big Bamboo, which has a 96.13% version and a 94.13% version.

Popular mobile slots compared

Specifications of popular slots on mobile
Slot	Developer	RTP	Volatility	Max win
Starburst	NetEnt	96.09%	Low	500x
Blood Suckers	NetEnt	98.00%	Low	1,014x
Rainbow Riches	Barcrest	95.00%	Medium	500x
Fishin' Frenzy	Blueprint Gaming	96.12%	Medium	5,000x
Book of Dead	Play'n GO	96.21%	High	5,000x
Gates of Olympus	Pragmatic Play	96.50%	High	5,000x
Big Bass Bonanza	Reel Kingdom	96.71%	High	2,100x

Read the full reviews of Starburst, Book of Dead, Big Bass Bonanza and Gates of Olympus. A higher RTP doesn't mean a slot will pay you more in a session; volatility shapes how bumpy the ride is.

Maximum win is a cap, not a target. A 5,000x top prize on a 10p spin is £500, and reaching it is very unlikely in any one session. Jackpot slots work differently: Mega Moolah's published base-game RTP of 88.12% excludes the jackpot contribution.

Sections

Slot providersThe studios whose games fill UK casino apps, what each is known for, and their slots on our site.

Pragmatic Play slots

NetEnt slots

Play'n GO slots

Ankh of AnubisAnkh of Anubis slot by Play'n GO: 576 ways on a 3-4-4-4-3 grid, random Anubis Wilds, an Ankh meter in free spins, 96.2% RTP and 15,000x max win. 18+.Book of DeadBook of Dead slot review: 96.21% RTP, high volatility, 10 lines and a 5,000x max win, plus what £20 buys on a phone and the UK rules that apply. 18+Fire JokerFire Joker slot review: Play’n GO’s 3x3 classic with 96.15% RTP, 5 paylines, Respin of Fire, a 2x–10x multiplier wheel and an 800x max win. 18+GemixGemix slot by Play’n GO: 96.83% top RTP, medium volatility, 7x7 cluster pays, Crystal Charge features and three wild worlds instead of free spins. 18+GigantoonzGigantoonz slot by Play'n GO: the 8×8 cluster grid, mega symbols, the meter and its four modifiers, 96.25% top RTP and what £20 buys at 10p to £1. 18+Honey RushHoney Rush slot review: Play’n GO’s hexagon cluster game with 96.5% top RTP, high volatility, a 9,000x max win and the Rush meter, on UK mobile apps. Legacy of EgyptLegacy of Egypt slot by Play’n GO: 96.5% top RTP, high volatility, 30 lines, a 5,000× cap and the Wheel of the Gods free spins, plus UK app rules. 18+Moon PrincessMoon Princess slot review: Play'n GO's 5x5 cascading grid with a 96.50% RTP, high volatility, a 5,000x top win, three princess powers and UK app play.Moon Princess 100Moon Princess 100 slot by Play’n GO: 96.2% top RTP, a 5x5 cascading grid, Girl Power, Princess Trinity and a 15,000x cap, plus costs and UK app rules.ReactoonzReactoonz slot by Play'n GO: 96.51% RTP, high volatility, a 7x7 cluster grid and the Quantumeter explained, plus what a £20 budget means on mobile. 18 Reactoonz 2Reactoonz 2 slot by Play’n GO: 96.2% top RTP, a 7×7 cluster grid, Electric wilds, the Quantumeter and Fluctometer explained, and UK mobile rules. 18+Rise of AthenaRise of Athena slot by Play’n GO: 96.2% top RTP, medium volatility, 10 lines, x3 multiplier wilds and 12 sticky free spins, plus UK app rules. 18+Rise of MerlinRise of Merlin slot review: Play'n GO's 10-line game with a wild-scatter Magical Orb, expanding symbol free spins, 96.58% top RTP and UK app stakes. 1 Rise of OlympusRise of Olympus slot review: Play'n GO's 5x5 grid, the Hades, Poseidon and Zeus powers, 96.50% RTP, 5,000x max win and how it plays on a phone. 18+.Tower QuestTower Quest slot by Play’n GO: 96.24% top RTP, medium volatility, a 500x max win, the Evil Wizard card bonus and potion free spins on UK apps. 18+.Viking RunecraftViking Runecraft slot by Play’n GO: a 7x7 cluster-pays grid with cascades, god wilds, a charge meter and the Ragnarok free spin. RTP and UK rules. 18+

Blueprint Gaming slots

Buffalo Rising MegawaysBuffalo Rising Megaways slot by Blueprint: up to 117,649 ways, cascades, a free spins choice and a rising multiplier. RTP, costs and UK app rules. 18+Diamond Mine MegawaysDiamond Mine Megaways slot by Blueprint: up to 117,649 ways, TNT Mystery Barrels, an uncapped free spins multiplier and three RTP versions to check. 1 Even Bigger CatchEven Bigger Catch slot by Blueprint Gaming: 95% RTP (a 93% version exists), 10 paylines, a fisherman collect round and 10,000x max win, in UK apps. 18 Eye of HorusEye of Horus slot guide: Blueprint Gaming's 10-line Egyptian game, its expanding wild, 12 free spins, 96.31% RTP and what £20 buys on your phone. 18+.Eye of Horus MegawaysEye of Horus Megaways slot from Blueprint Gaming: up to 15,625 ways, upgrading wilds, four RTP versions and what a £20 budget buys on your phone. 18+.Fishin' FrenzyFishin' Frenzy slot review: Blueprint's 10-line game with a 96.12% RTP, medium volatility, up to 20 free spins with fish cash collects and mobile tips Fishin' Frenzy MegawaysFishin' Frenzy Megaways slot review: 96.10% RTP, high volatility, up to 15,625 ways and a 10,000x max win, with pound examples and UK app rules. 18+Genie JackpotsGenie Jackpots slot by Blueprint Gaming: 96.49% RTP and a lower version, the Wish feature, two bonus games and the Jackpot King network, with UK app t King Kong CashKing Kong Cash slot by Blueprint Gaming: 95.79% RTP, 20 paylines, random base-game features and a five-bonus wheel, with the cost per spin in pounds. Legacy of Ra MegawaysLegacy of Ra Megaways slot by Blueprint Gaming: 96.01% RTP, high volatility, up to 15,625 ways, an expanding symbol in free spins and a 50,000x max wi Primal MegawaysPrimal Megaways slot review: 96.76% RTP, high volatility, up to 46,656 ways, mystery flame symbols and multiplying wilds, plus how it plays on a phone Ted MegawaysTed Megaways slot review: Blueprint's 96.03% RTP Megaways game with up to 117,649 ways, a 50,000x top win, the Thunder Buddies bonus and UK app play. The Big CatchThe Big Catch slot from Blueprint Gaming: 95.32% RTP, 10 paylines, fisherman collects and upgrades, what £20 costs on average and UK app rules. 18+The GooniesThe Goonies slot review: Blueprint Gaming’s 96% RTP film slot with random features, a six-feature bonus wheel, 10,000x max win and UK app play. 18+

Hacksaw Gaming slots

Chaos CrewChaos Crew slot review: Hacksaw Gaming’s 5x5 game with a 96.30% RTP, 10,000x cap, multiplying Cranky Cat wilds and reel multipliers, plus UK app rules Chaos Crew 2Chaos Crew 2 slot from Hacksaw Gaming: 96.27% RTP, 5-of-5 volatility, a 20,000x cap, Cranky Cat wilds and three bonus types explained for UK mobile. 1 Dork UnitDork Unit slot by Hacksaw Gaming: 96.28% RTP, medium volatility, 16 lines, Gift Bonanza respins and Dork Spins explained, plus UK app rules. 18+Hand of AnubisHand of Anubis slot by Hacksaw Gaming: 96.24% RTP, top-rated volatility, cluster pays, multiplying Soul Orb wilds, two bonus rounds and a 10,000× cap.Joker BombsJoker Bombs slot by Hacksaw Gaming: 96.48% RTP, medium volatility, pay-anywhere tumbles, multiplier bombs, 10 free spins and a 5,000x cap on mobile. 1 Le BanditLe Bandit slot review: Hacksaw Gaming’s 96.34% RTP cluster-pays game. How golden squares, Rainbow coins, clovers and Pots of Gold work on a UK app. 18 Le PharaohLe Pharaoh slot by Hacksaw Gaming: 96.18% RTP, medium volatility, 19 lines on a 6x5 grid, Sticky Re-Drops, Golden Riches and a 15,000x max win. 18+Le VikingLe Viking slot by Hacksaw Gaming: 96.32% RTP, medium volatility, 15,625 ways, Raid Spins with three lives and four free spins tiers, plus UK app rules RIP CityRIP City slot by Hacksaw Gaming: a 5×5 grid, 19 lines that pay both ways, stretching Cat Wilds, two bonus rounds, 96.22% RTP and a 12,500× cap. 18+Rocket ReelsRocket Reels slot by Hacksaw Gaming: 7×7 cluster pays, rockets that leave adding multipliers, 8 free spins, 96.3% RTP and a 10,000x top prize on mobil Stick 'EmStick 'Em slot by Hacksaw Gaming: 96.1% RTP, 1,024 ways, locking thumbs-up respins, a bonus wheel and free spins. Costs and UK app rules explained. 18 Wanted Dead or a WildWanted Dead or a Wild slot guide: Hacksaw Gaming's 96.38% RTP western, VS wilds with 2x–100x multipliers, all three bonus rounds and UK mobile play. 1

Games Global slots

9 Masks of Fire9 Masks of Fire slot review: 96.24% RTP, medium volatility, 20 lines, masks that pay anywhere and a free spins wheel, plus £20 budgets and UK app rule Agent Jane Blonde ReturnsAgent Jane Blonde Returns slot review: 96.6% RTP, low volatility, 15 paylines, stacked wilds and a sticky-wild respin, and how it plays in UK apps. 18 Ancient Fortunes: ZeusAncient Fortunes: Zeus slot guide for UK app players: 96.02% RTP, medium volatility, wins both ways, Rolling Reels, the multiplier trail and free spin AvalonAvalon slot review: 96.01% RTP, medium volatility, 20 paylines and 12 free spins with up to 7x, plus £20 budgets and how it plays in UK casino apps. 1 Book of OzBook of Oz slot review: Games Global's 10-line book game, 96.31% RTP, high volatility, 5,000x max win and what that means for a £20 phone budget. 18+.Break da Bank AgainBreak da Bank Again slot explained: 95.43% RTP, high volatility, 9 paylines, 5x wild and up to 25x free spin multipliers, with UK mobile costs in £. 1 Immortal RomanceImmortal Romance slot review: 96.86% RTP, 243 ways, Wild Desire and the four Chamber of Spins features explained, with UK mobile budget maths. 18+Lucky LeprechaunLucky Leprechaun slot review: the 2015 Microgaming game now with Games Global, 96.33% RTP, 20 paylines, the Trail of Fortune bonus and mobile tips. 18 Mega MoolahMega Moolah slot review: the 88.12% base RTP explained, how the jackpot wheel works, what £20 buys at 10p to £1, and playing it in UK casino apps. 18+ThunderstruckThunderstruck slot, the 2004 Microgaming classic now with Games Global: 9 lines, a Thor wild that doubles wins, 15 tripled free spins and 96.1% RTP. 1 Thunderstruck IIThunderstruck II slot review: 96.65% RTP, medium volatility, 243 ways, Wildstorm and the four Great Hall of Spins rounds, plus mobile play costs. 18+.

Reel Kingdom slots

Big Bass Amazon XtremeBig Bass Amazon Xtreme slot review: fish cash symbols, the pick stage, Fisherman retriggers, three RTP versions and very high volatility on UK apps. 1 Big Bass BonanzaBig Bass Bonanza slot review: 96.71% RTP, high volatility, 2,100x max win, how the Fisherman collect works and what 80 spins at 10p are worth. 18+.Big Bass Bonanza MegawaysBig Bass Bonanza Megaways slot: 96.7% RTP, up to 46,656 ways, tumbling reels, Fisherman free spins, a 4,000× cap and how it differs from the original.Big Bass Christmas BashBig Bass Christmas Bash slot by Reel Kingdom: 96.71% RTP, 5,000× max win, pre-round modifiers and the Fisherman collect, explained for UK mobile apps.Big Bass Floats My BoatBig Bass Floats My Boat slot review: 96.07% default RTP, high volatility, 5,000x max win, position multipliers and what £20 gets you in a UK app. 18+Big Bass HalloweenBig Bass Halloween slot review: 96.04% RTP, medium-high volatility, 10 lines, a 2,100× max win and the Fisherman collect feature, plus phone play tips Big Bass Hold & SpinnerBig Bass Hold & Spinner slot: 96.07% RTP, very high volatility, 10 lines, a coin respin feature, fisherman free spins and a 10,000x max win in UK apps Big Bass SplashBig Bass Splash slot review: Reel Kingdom's fishing game with 96.71% RTP, a 5,000x max win, random modifiers and the Fisherman ladder on mobile. 18+.Big Bass Vegas 1000Big Bass Vegas 1000 slot review: 96.53% RTP, medium volatility, 15,000x max win, red and blue Fishermen, two meters and play on a UK casino app. 18+.Bigger Bass BonanzaBigger Bass Bonanza slot by Reel Kingdom: three RTP versions, 5×4 reels, 12 paylines, Fisherman free spins with 2x, 3x and 10x multipliers, and UK rul Floating DragonFloating Dragon slot from Reel Kingdom: 96.71% default RTP, high volatility, 10 lines, Hold & Spin, free spins levels and a 5,000x max win. 18+

Big Time Gaming slots

Bonanza MegawaysBonanza Megaways slot guide: Big Time Gaming's 2016 gold-mine game with 117,649 ways, 96.00% RTP, the GOLD free spins and an uncapped multiplier. 18+.Danger High VoltageDanger High Voltage slot review: Big Time Gaming's 4,096-ways game, its two wilds, the Gates of Hell or High Voltage free spins choice and 96.22% RTP.Extra Chilli MegawaysExtra Chilli Megaways slot review: the UK RTP without Feature Drop, how the HOT free spins and rising multiplier work, £20 budget maths and phone play Holy DiverHoly Diver slot review: Big Time Gaming’s Megaways game with up to 117,649 ways, RTP of 96.39% to 96.54% by level, a 23,306x top win and phone tips. 1 KingmakerKingmaker slot by Big Time Gaming: 96.65% RTP, five-reel Megaways with up to 16,807 ways, gem multipliers and a 10,000x top win, explained for mobile.Lil DevilLil Devil slot by Big Time Gaming: 96.43% RTP, 4,096 ways on 6×4 reels, multiplier wilds and a choice of two free spins rounds, plus UK app rules. 18+Millionaire MegawaysMillionaire Megaways slot by Big Time Gaming: 96.27% RTP, up to 117,649 ways, the Hot Seat quiz gamble and an uncapped multiplier, explained for mobil Monopoly MegawaysMonopoly Megaways slot by Big Time Gaming: 96.5% RTP, up to 117,649 ways, a 14,700× max win and a board that drives free spins, played on your phone. Star Clusters MegaclustersStar Clusters Megaclusters slot review: Big Time Gaming’s 2020 splitting-symbol cluster game, 96.54% RTP, free spins from reactions and phone play. 18 White Rabbit MegawaysWhite Rabbit Megaways slot review: Big Time Gaming's 97.24% RTP Alice game, up to 248,832 ways in free spins, a 17,420x top win and UK app play. 18+

Nolimit City slots

Book of ShadowsBook of Shadows slot review: Nolimit City’s extreme-volatility book game, 96.01% default RTP, 3 to 5 rows, a 30,338x top win and phone play tips. 18+Das xBootDas xBoot slot by Nolimit City: xNudge, xBomb and xWays explained, Silent Hunter vs Wolf Pack spins, a 96.03% RTP and 55,200x cap for UK apps. 18+DeadwoodDeadwood slot by Nolimit City: 96.03% RTP, extreme volatility, 576 ways, xNudge bounty hunter wilds and two free spins choices, played in UK apps. 18+East Coast vs West CoastEast Coast vs West Coast slot by Nolimit City: 96.04% RTP, extreme volatility, Enhancers, up to 84,375 ways and three bonus rounds, for UK mobile. 18+Fire in the Hole xBombFire in the Hole xBomb slot review: 96.06% default RTP, extreme volatility, up to 46,656 ways, a 60,000x cap and Lucky Wagon Spins on UK apps. 18+Folsom PrisonFolsom Prison slot by Nolimit City: an expanding grid from 16 ways, cockroach wilds, Walk The Line and The Chair, a 96.07% RTP and Insane volatility. MentalMental slot review: Nolimit City's extreme-volatility game with Fire Frames, xWays, xSplit, three free spin modes, a 66,666x max win and UK rules. 18+Punk RockerPunk Rocker slot by Nolimit City: 96.01% default RTP, high volatility, 243 ways rising to 46,656, Molotov wilds and three bonus modes, plus UK rules. San Quentin xWaysSan Quentin xWays slot by Nolimit City: 96.03% RTP, extreme volatility, Enhancer Cells, Lockdown Spins and a 150,000x cap, explained for UK apps. 18+Tombstone RIPTombstone RIP slot by Nolimit City: 96.08% RTP, Insane volatility, a 300,000x cap, the xRIP rule and Boothill free spins explained for UK app players.

Push Gaming slots

Big BambooBig Bamboo slot by Push Gaming: the 96.13% and 94.13% RTP versions, Mystery and Golden Bamboo explained, a £20 budget at three stakes, and UK app rule Fat BankerFat Banker slot by Push Gaming: 96.43% or 94.45% RTP, a 6×6 grid with 50 paylines, Bullions, Silver Safes, the Red Car and a growing Banker in free sp Fat RabbitFat Rabbit slot by Push Gaming: 96.45% or 94.15% RTP, the Harvest feature, the growing rabbit wild in free games and what play costs in a UK casino ap Fat SantaFat Santa slot by Push Gaming: 96.45% and 94.15% RTP versions, Santa’s Sleigh respins, the growing Santa wild in free games and UK app rules explained Jammin' JarsJammin' Jars slot review: Push Gaming's 8×8 cluster game with a 96.83% RTP, moving jar wilds, 20,000x max win and £20 budget maths for mobile play. 18 Jammin’ Jars 2Jammin’ Jars 2 slot reviewed: 8x8 cluster pays, moving jar wilds, the DJ meter and Giga Jar, a 96.1%–96.6% RTP and 50,000x max win, plus UK app rules.Mount MagmasMount Magmas slot by Push Gaming: 96.5% RTP, Wild Lava and Magma Rocks, the Magma Spin and 11-level pick bonus, plus £20 budgets and UK app rules. 18+Razor SharkRazor Shark slot review: Push Gaming’s 96.70% RTP, high-volatility ocean game. How Mystery stacks, Razor Reveal and free games work on a UK app. 18+.Retro TapesRetro Tapes slot by Push Gaming: 96.47% top RTP (95.47% and 94.46% versions exist), cluster pays, Wild Tapes, Top Charts free spins, 10,000x max. 18+

Relax Gaming slots

HellcatrazHellcatraz slot by Relax Gaming: 96.46% RTP (Mixed Mode), 46,656 ways on a 6x6 grid, mystery countdown symbols, 51,840x max win and UK app rules. 18+Iron BankIron Bank slot by Relax Gaming: 96.2% RTP, high volatility, 4,096 ways, wild reels up to 10x and three bonus modes, plus what it costs on a phone. 18+Money TrainMoney Train slot by Relax Gaming: 96.2% RTP, 40 paylines, the Money Cart respin bonus explained, a £20 budget at three stakes and UK app rules. 18+Money Train 2Money Train 2 slot by Relax Gaming: 96.40% RTP, 40 paylines, a 50,000x cap, the respin feature and Money Cart symbols explained for UK mobile players.Money Train 3Money Train 3 slot review: 96.1% RTP, 40 lines, a 100,000x cap and the Money Cart bonus with extra reels, plus £20 budgets and UK app rules. 18+Money Train 4Money Train 4 slot review: 6x6 scatter pays, 96.1% or 94% RTP versions, a 150,000x cap, the Money Cart bonus and what £20 costs in a UK casino app. 18 TNT TumbleTNT Tumble slot review: Relax Gaming’s cluster pays game with a 96.11% RTP, a grid that grows from 5x4 to 5x7, free spins choices and phone tips. 18+Temple Tumble MegawaysTemple Tumble Megaways slot by Relax Gaming: 96.25% RTP, high volatility, up to 46,656 ways, stone blocks and three free spins modes on UK apps. 18+

Red Tiger slots

Cash VoltCash Volt slot by Red Tiger: 94.78% RTP (versions from about 91% to 96%), medium volatility, 20 lines, pay-anywhere Cash Volt prizes and no free spins Dragon's FireDragon's Fire slot by Red Tiger: a multiplier that climbs with each win in a row, random Fire Blast wilds, picked free spins and a 95.25% RTP on mobil Dynamite RichesDynamite Riches slot by Red Tiger: 94.76% RTP, high volatility, 20 lines, a dynamite fuse that adds modifiers and a 5,341× top win, plus UK app rules.Gonzo's Quest MegawaysGonzo's Quest Megaways slot by Red Tiger: 95.77% RTP, up to 117,649 ways, Avalanche multipliers, Earthquake and Free Fall explained, with costs in pou Mystery ReelsMystery Reels slot review: Red Tiger’s 2017 fruit-style game with spreading mystery symbols, a bonus wheel, 96.24% RTP, a 5,000× cap and mobile tips. Piggy Riches MegawaysPiggy Riches Megaways slot from Red Tiger: 95.71% RTP, high volatility, 117,649 ways, Mega Wilds and a climbing free spins multiplier, played on mobil Pirates’ PlentyPirates’ Plenty slot by Red Tiger: 95.07% RTP, the Monkey Wild, treasure map sixth reel and Ocean Spins explained, with stake costs for UK app players

IGT slots

CleopatraCleopatra slot by IGT reviewed: 95.02% RTP, medium volatility, 15 free spins with tripled wins, the real cost per £20 and how to play it in UK apps. 1 Da Vinci DiamondsDa Vinci Diamonds slot by IGT: tumbling reels on 5×3 with 20 paylines, 6 free spins, a 94.93% RTP and a 5,000x top prize, explained for phone players.Fortune CoinFortune Coin slot by IGT: 243 ways on 5x3 reels, coin symbols that award free games, cash or a four-jackpot feature, RTP up to 96.20% and phone tips. Pharaoh’s FortunePharaoh’s Fortune slot by IGT: up to 96.52% RTP, the pyramid pick that sets free spins and multiplier, 20 lines in the bonus and a 10,000× cap on UK a Siberian StormSiberian Storm slot review: IGT’s 720-ways MultiWay Xtra game, RTP versions from 92.52% to 96%, medium volatility, free spins and mobile tips. 18+Wolf RunWolf Run slot by IGT: 94.98% RTP, 40 paylines, stacked wolf wilds and five free spins. What it costs per hour on a phone and UK stake rules. 18+

Quickspin slots

Big Bad WolfBig Bad Wolf slot review: Quickspin's 97.34% RTP, medium-volatility fairy tale with Swooping Reels, pig wilds and moon-powered free spins on UK apps. Dwarfs Gone WildDwarfs Gone Wild slot by Quickspin: 96.38% RTP, medium–high volatility, 20 lines and a minecart bonus with seven dwarf features, plus UK app rules. 18 Hot SyncHot Sync slot by Quickspin: 96.29% default RTP, high volatility, 20 lines, the Hot Sync Respin and free spins explained, plus UK app rules and budgets Phoenix SunPhoenix Sun slot review: Quickspin's 96.08% RTP game that grows from 243 to 7,776 ways, how the Phoenix Wild respin works, and UK app stakes. 18+Sakura FortuneSakura Fortune slot by Quickspin: 40 paylines, Princess wild respins, sticky free spins wilds and why its two RTP versions matter on UK apps. 18+Sticky BanditsSticky Bandits slot by Quickspin: 5x5 reels, 30 lines, Massive Wilds and 7 free spins where every wild stays put, with the 96.58% RTP in pounds. 18+.

ELK Studios slots

CygnusCygnus slot by ELK Studios for UK app players: 96.1% RTP, avalanches that grow the grid to 262,144 ways, multipliers, Free Drops and costs per stake. NitropolisNitropolis slot by ELK Studios: how Nitro Reels push ways past 85 million, respins, locked reels in free spins, a 96.1% RTP and £20 budget maths. 18+PirotsPirots slot by ELK Studios: four parrots collecting gems on a grid that grows from 5×5 to 8×8, free drops, a 94% RTP and what that costs you on mobile Pirots 2Pirots 2 slot review: ELK Studios' bird-collect game on a 6x6 grid that grows to 8x8, its 94% RTP in pounds, Free Drops and playing on a phone. 18+Wild ToroWild Toro slot by ELK Studios: 96.4% RTP, medium–high volatility, 178 ways, a walking Toro wild and Matador sticky respins, played in UK casino apps.

Playtech slots

Age of the GodsAge of the Gods slot review: Playtech’s 95.02% RTP jackpot game, the coin wall and four gods, £20 budgets and how it plays in UK casino apps. 18+Buffalo BlitzBuffalo Blitz slot by Playtech: 4,096 ways on a 6×4 grid, 95.96% or 94.01% RTP, up to 100 free spins with random wild multipliers, and UK app rules. 1 Great BlueGreat Blue slot by Playtech: 96.03% RTP, high volatility, 25 lines, a whale wild that doubles wins and a shell-pick free spins round, for UK apps. 18+Halloween FortuneHalloween Fortune slot by Playtech: 97.06% RTP, medium volatility, 20 paylines and the Witches' Brew Bonus explained, plus the cost of playing on a ph Jackpot GiantJackpot Giant slot by Playtech: 94.22% RTP, 50 fixed paylines, a volcano pick bonus and a progressive jackpot for five wilds on line 1, in UK apps. 18

Yggdrasil slots

Holmes & the Stolen StonesHolmes & the Stolen Stones slot by Yggdrasil: 96.8% RTP, medium volatility, diamond jackpots, the Warehouse bonus and how it plays on a phone. 18+.Jackpot RaidersJackpot Raiders slot by Yggdrasil: 96.3% RTP, low volatility, 20 lines, Treasure Hunt, Sunken City spins and gem jackpots explained, plus UK app rules Valley of the GodsValley of the Gods slot by Yggdrasil: 96.2% RTP, high volatility, blockers that open up 3,125 ways, scarab multipliers and extra lives, and mobile tip Vikings Go BerzerkVikings Go Berzerk slot review: Yggdrasil’s 25-line game with a 96.1% RTP, rage meters, 7 to 21 free spins, sticky wilds and tips for mobile play. 18+Vikings Go WildVikings Go Wild slot review: Yggdrasil’s 2015 game with 96.3% RTP, low-to-medium volatility, up to 24 free spins, sticky Viking wilds and phone tips.

Barcrest slots

Rainbow RichesRainbow Riches slot review: Barcrest's 95% RTP leprechaun game, its three bonus features, a 500x top win, £20 budgets and playing it in UK casino apps Rainbow Riches MegawaysRainbow Riches Megaways slot explained: 96% RTP, high volatility, up to 117,649 ways, Super Gem and free spins maths, plus how it plays in UK apps. 18 Rainbow Riches Pick 'n' MixRainbow Riches Pick 'n' Mix slot by Barcrest: choose three of five bonus features, 20 paylines, medium volatility and an RTP that varies with stake. 1 Reels of GoldRainbow Riches Reels of Gold slot by Barcrest: colossal reels, random fairy features, the balloon pick and why its RTP changes with your stake. 18+.

Novomatic slots

Book of Ra DeluxeBook of Ra Deluxe slot by Novomatic: 10 paylines, very high volatility, an expanding symbol in free spins and two RTP versions. Costs and UK rules. 18 Dolphin’s Pearl DeluxeDolphin’s Pearl Deluxe slot by Novomatic: 10 lines, a dolphin wild that doubles wins, 15 free games at triple pay, 95.13% RTP and high volatility. 18+Lord of the OceanLord of the Ocean slot by Novomatic: Poseidon’s Gate as wild and scatter, 10 free games with an expanding symbol, 95.1% RTP and high volatility. 18+Sizzling Hot DeluxeSizzling Hot Deluxe slot by Novomatic: a 5-line fruit game with 95.66% RTP, Star scatter, the red or black gamble and a 5,000× cap, explained for UK a

Thunderkick slots

Birds on a WireBirds on a Wire slot by Thunderkick: falling birds with rising multipliers, up to 34 free spins, the Inwinity Spin, 96.1% RTP and a 9,000× cap explain Esqueleto ExplosivoEsqueleto Explosivo slot reviewed: 96.0% RTP, low volatility, 17 lines, exploding symbols and a multiplier up to 32x, plus how it plays in UK apps. 18 Esqueleto Explosivo 2Esqueleto Explosivo 2 slot by Thunderkick: 96.13% RTP, medium volatility, 99 pay ways, the Mucho Multiplier and a 5,000× top win, played on mobile. 18 Pink Elephants 2Pink Elephants 2 slot by Thunderkick: 96.13% RTP, high volatility, six reels with 4,096 ways and a 10,000× top win, plus how it plays in UK apps. 18+

Eyecon slots

Fluffy FavouritesFluffy Favourites slot review for UK app players: both RTP versions, the elephant wild, Toybox Pick, tripled free spins and what £20 buys at each stak Fluffy TooFluffy Too slot by Eyecon: why it has 95% and 93% RTP versions, how the elephant free games and Coin Pusher work, and what it costs per £20 on mobile.Shaman’s DreamShaman’s Dream slot by Eyecon: 95% RTP (a 93% version exists), medium volatility, 25 lines, a win-doubling wolf wild and 15 tripled free spins. 18+.

Light & Wonder slots

88 Fortunes88 Fortunes slot guide for UK apps: 96% RTP, 243 ways, the Fu Bat jackpot pick, optional gold symbols, gong free spins and what each stake costs. 18+Dancing DrumsDancing Drums slot by Light & Wonder: 96.09% RTP, 243 ways, a four-level jackpot pick game and a choice of free spins up to 7,776 ways, plus UK rules.

WMS slots

Planet MoolahPlanet Moolah slot guide: how WMS’s cascading reels work, the 96% vs 95% RTP question, costs for a £20 budget and why it isn’t Mega Moolah. UK apps, 1 Raging RhinoRaging Rhino slot review: WMS’s 2015 safari game with 4,096 ways, 95.91% RTP, up to 50 free spins with 2x–3x wilds, and how it plays on a phone. 18+

Fortune Factory Studios slots

Gold BlitzGold Blitz slot from Fortune Factory Studios: 96% RTP, high volatility, 4,096 ways, Collect symbols and a choice of two bonuses, on UK casino apps. 18

Greentube slots

Lucky Lady’s Charm DeluxeLucky Lady’s Charm Deluxe slot by Novomatic: 10 lines, a wild that doubles wins, 15 free games at triple pay and 95.13% RTP, explained for UK apps. 18

NextGen slots

Medusa MegawaysMedusa Megaways slot review: NextGen’s 6-reel game with up to 117,649 ways, 96.28% RTP, high volatility, a 50,000x cap and cascades on UK apps. 18+

What mobile slots cost: RTP and volatility in pounds

RTP tells you the long-run return, and the gap to 100% is the house edge. Book of Dead's 96.21% RTP means a 3.79% edge. If you stake £20 in total, for example 200 spins at 10p, the expected loss is about 76p. Stake the same £20 as 20 spins at £1 and the expected loss is the same, but the swings are far larger, so the money can go in a few spins.

Time matters too. UK slots must take at least 2.5 seconds per spin, which allows up to 1,440 spins an hour. At 50p a spin on a 96% RTP slot, that's £720 staked and an expected loss of £28.80 an hour. Our guides to RTP and volatility explain both ideas.

A budget in pounds and a time limit, set before you start, do more to protect your money than any choice of game.

UK slot rules on every mobile slot

Stake limits: £5 per spin for players aged 25 and over (from 9 April 2025) and £2 for players aged 18 to 24 (from 21 May 2025).
No autoplay, turbo or slam-stop, and at least 2.5 seconds per spin, since 31 October 2021.
No false celebrations: a return equal to or lower than your stake can't be celebrated as a win.
Feature buys: since a Gambling Commission warning in January 2020, feature buy-ins are not offered to British players.

The Commission's online slots stake limit guidance (opens in a new tab) gives worked examples. See also slot stake limits on mobile and why there is no autoplay on UK casino apps.

Finding mobile slots that suit you

Slots are built in HTML5, so they run in an app or a mobile browser. Some games favour portrait mode and others landscape; each review notes this only where the developer states it. Browse by studio in our slot providers hub, or by mechanic in the Megaways slots on mobile and jackpot slots on mobile guides. To find where to play, our best slot apps list ranks the partner apps; check each app's game lobby, because titles vary between casinos.

18+. Every casino game has a built-in house edge, so over time you should expect to lose what you stake. Set a budget before you play and stop when it’s gone: safer gambling tools and support. Free, confidential help: National Gambling Helpline 0808 8020 133.

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