Online Slots With Free Spins Bonus Rounds

This isn’t just a list of online slots. It’s a fully custom-built filter system designed to help you find your perfect game — fast.

You can filter by RTP, volatility, paylines, reels, theme, bonus types, and more. We built this tool because trawling through hundreds of slots isn’t fun — but discovering the right one with a few clicks? Very fun. Set your preferences, sort by what matters to you, and let the slot-finding magic do its thing.

Slot Finder: Built for Players

Sort through the chaos with our custom slot database filters. Tired of endless scrolling? Use our bespoke tool to filter by features that actually matter — RTP, volatility, paylines, bonus rounds, even the number of reels. No generic fluff, just a fast way to find the games you want to play.

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Online Slots UK

Our Online Slots UK page is the place to explore, compare and play slot games from some of the best developers in the business — from Blueprint Gaming to Red Tiger, Pragmatic Play, and beyond. Whether you’re into video slots, jackpot slots, or just here for a few spins, this is where it all lines up.

We’re not talking about a handful of dusty old slot games either. We’re talking hundreds of titles, including classics like Rainbow Riches and Sweet Bonanza, all the way through to spin-offs, progressive jackpots, and high-volatility thrill rides. Fancy Big Bass Bonanza? Go ahead and chase those fish symbols. Prefer Slingo Rainbow Riches? You’ll find it here too.

Use our filter system to sort by RTP, bonus features, free spins, and even reels and paylines — ideal if you’re into fine-tuning your gameplay down to the last scatter symbol. You can even track down selected games by provider or title, whether you’re looking for the best online slots or just want to try your luck on certain games with bonus money.

Everything you see here is playable at fully licensed UK casinos, with clear time limits, deposit caps, and responsible gambling tools. We don’t mess about with dodgy operators — all our links take you to legit, secure online casino sites, where new players can register, bet and (hopefully) win with confidence.

This is where online slots meet structure, style, and sarcasm. Scroll down, play games, and maybe — just maybe — hit one of those life-changing jackpots.

Reel It In: Your Guide to Playing Slot Games Online

Online slots have become the go-to game for UK players who like their reels fast, their themes wild, and their wins potentially massive. Thanks to years of innovation, you’re no longer stuck spinning fruit machines with three reels and a dodgy ‘hold’ button. Now you’ve got thousands of slot games to choose from, all with unique features, characters, mechanics – and let’s be honest, some truly questionable soundtracks.

When you play slots online these days, you’re diving into a world of sticky wilds, cascading reels, expanding multipliers, Megaways madness, and bonus rounds that could either deliver a small fortune or a brief, soul-crushing disappointment. That’s half the fun.

Online slot games come in all shapes and sizes – 3-reel, 5-reel, 6-reel, 7×7 grid-based chaos, or even no reels at all (looking at you, Crash games). And the themes? Take your pick from Viking invasions to candy-coated fever dreams, fish-filled ponds, ancient Egyptian tombs, and pub fruit machine throwbacks. There’s something for every mood.

The best bit? You don’t need to be a slots pro to get started. Just load up the game, choose your bet, and hit spin. Most slots now come with demo mode, so you can give them a whirl for free before committing any cash. Whether you’re here for five minutes or a full-on bonus-chasing session, playing online slots has never been more accessible (or entertaining).

Jackpot Slots: For When a Tenner Could Turn Into A Big Win

If regular wins are nice, jackpot wins are the casino equivalent of a confetti cannon going off in your bank account. Jackpot slots are designed for dreamers — the kind of player who spins once and checks flights to the Maldives “just in case.”

There are two main types:

⭐️ Fixed Jackpots

You’ll find these in many standard slot games. The top prize is always the same and doesn’t grow over time — think of them as reliable little cash boosts rather than life-altering windfalls. Still worth having.

⭐️ Progressive Jackpots

These are the rockstars of the slot world. A slice of every spin from every player goes into a prize pool that keeps growing until someone hits it. That “someone” could be you.

Mega Moolah is the granddaddy of them all — it’s made more millionaires than the National Lottery. Then you’ve got Jackpot King slots from Blueprint Gaming, where titles like Fishin’ Frenzy Jackpot King, The Goonies, and Top Cat Most Wanted offer random-entry jackpot rounds that could land you one of three progressive pots.

Skywind’s Must Win Jackpots are another hot pick. These aren’t just progressive — they’re progressive with a deadline. The jackpot has to drop before a certain amount or time, which adds a fun layer of urgency. Games like Super Lion, Big Buffalo Megaways, and Alive! Megaways are all in that pool.

And yes, we’re fully aware of how many Big Bass Bonanza clones are floating about with the word “jackpot” tacked on. We’re not mad about it — if you’re going to spin endlessly for cash, you might as well do it with a fishing rod and some bonus features.

Daily Drops & Wins Explained

Daily Drops & Wins is a promotional network created by Pragmatic Play, where selected games feature prize pools that pay out daily and weekly. These aren’t progressive jackpots in the traditional sense — instead, they’re timed events where players can win instant cash prizes just by playing eligible games at random. You don’t need to trigger any bonus rounds or land any specific combos — just spin on participating slots like Big Bass Bonanza or Gates of Olympus, and you could randomly win a share of the prize pool. Think of it as a little surprise bonus layered over your regular gameplay.

Quick Tips:

⚠️ Jackpot slots usually have lower RTPs – you’re trading steady wins for a shot at the big one.

⚠️ They tend to be high volatility – you might have to wait, but the payoff (potentially) makes it worth it.

⚠️ Always check whether you need to bet max or trigger a feature to qualify.

Best Online Slots

Let’s be honest — not all slots are created equal. Some fade into the background like lift music, while others pack enough punch to keep players spinning well into the night. If you’re wondering which online slot games are truly worth your time (and maybe a bit of your budget), we’ve lined up the crowd-pleasers that actually live up to the hype.

Take Big Bass Bonanza, for example — a slot so successful it’s had more spin-offs than a daytime soap. The fishy theme might not be for everyone, but its bonus features, solid gameplay, and classic ‘hook a win’ mechanic make it one of the best online slots for UK players. Fans of fish symbols, rejoice.

Then there’s Sweet Bonanza by Pragmatic Play. If you like your slots with a bit of sugar and a side of chaos, this one’s for you. Tumble wins, multipliers, and bonus rounds that can blow up fast — it’s a candy-coated rollercoaster.

Book of Dead remains a rite of passage. It’s the slot that convinced half the internet that ancient Egypt and high volatility were a match made in heaven. With expanding symbols during free spins, it’s a slot that teases you with the promise of big wins — and occasionally delivers.

We’d be remiss not to mention Starburst, NetEnt’s enduring neon-lit star. Love it or loathe it, it’s the go-to for bonus spins and remains one of the most played games across UK casino sites.

Other standout mentions include Gonzo’s Quest, Bonanza Megaways, and Rainbow Riches — all with legions of loyal fans and plenty of ways to win (or lose stylishly).

The best online slots aren’t always the flashiest — they’re the ones with well-balanced gameplay, engaging mechanics, and just enough volatility to keep things interesting. Lucky for you, we’ve filtered through the clutter so you don’t have to. Or you can use our online slots filter system of course.

New Slot Games: What’s Hot This Week

If you like your reels fresh out the oven, you’ll want to keep an eye on the latest slot releases. We’re talking brand-new titles every week — often with crazier features, better graphics, and the occasional mascot that looks like it belongs in a Saturday morning cartoon.

Our slots database is constantly updated, so if you’re looking for new slot games UK players are buzzing about, you’re in the right place. Just hit the “Order by – New Slots” filter above and you’ll see all the new slots this week, from revamped classics to totally unhinged experimental ones with exploding reels, mystery multipliers, or talking cats (probably).

If you want a deeper dive into where these shiny new games are landing, check out our New Casino Sites page — it’s stacked with platforms that always stock the best new slots first. Because let’s face it, there’s nothing quite like being the first one to moan about a new game’s bonus round.

Mobile Slots: Spin Anytime, Anywhere

Gone are the days of firing up a desktop to play your favourite slot games. Mobile slots have taken over — and let’s be honest, nothing beats squeezing in a quick spin while pretending to text back your mate.

Thanks to modern tech, you can play slots on your phone with zero fuss. Whether you’re team iPhone or team Android, most online casinos now offer slick, fully optimised platforms that make slots on the go smooth, responsive, and dangerously easy to access.

Touch controls make spinning as easy as tapping your screen, and the best mobile casino sites slots load faster than your attention span. Most games now adjust automatically between landscape and portrait modes, so whether you’re lying in bed sideways or sneakily playing one-handed on the bus — you’re covered.

And yes, slot apps are a thing. Many UK casinos offer dedicated apps for faster loading, smoother navigation, and instant access to promos and free spins. But even without an app, mobile browser play is so seamless these days, you won’t miss a thing.

No Deposit Slots UK

If the words “free spins no deposit” don’t make you perk up, are you even a slots fan? No deposit slots UK offers are exactly what they say on the tin — a chance to spin without dropping a single penny. You register, maybe verify your details, and boom: the reels are yours.

Most no deposit slot offers dish out a handful of spins on selected games — think Starburst, Big Bass Bonanza, or other fan favourites. Sure, you’re not going to retire off the back of them, but free is free. And who’s going to say no to a cheeky spin that could turn into bonus cash?

They usually come with some wagering requirements or withdrawal caps, so don’t start ordering the champagne just yet — but they’re perfect for trying out new sites without risking your own cash.

We’ve rounded up the best of them over on our No Deposit Casinos page. Have a scroll, grab your bonus, and spin without spending.

Free Spins

Free spins: the closest thing to a casino giving you a gift and not immediately snatching it back. Whether it’s part of a welcome bonus or a surprise midweek treat, free spins are one of the best ways to try online slot games without blowing your bankroll in 30 seconds flat.

Most UK online casinos use free spins to lure in new players. You know the type — “Spin the reels on Starburst or Big Bass Bonanza with 30 free spins when you deposit £10”. Sometimes you don’t even need to deposit anything. These no deposit free spins are rare, but when you spot them, snap them up before they vanish faster than your winnings on a low-volatility slot.

You’ll find two types of free spins:

⭐️ Wager free spins, where what you win is yours (a unicorn in the casino world).

⭐️ Bonus spins, which often come with wagering requirements — so don’t start spending your imaginary winnings too soon.

Look out for deals on popular titles like Sweet Bonanza, Book of Dead, or Fishin’ Frenzy The Big Catch. Casinos often tie their free spin promos to these big names because players just can’t get enough of them.

You can also filter our database of online slots games to find which ones feature free spins as a built-in bonus round. A few spins on the right slot could land you in a feature with sticky wilds, expanding symbols, or — if the slot gods are feeling generous — a multiplier or two.

Of course, no one’s saying you’re going to retire off free spins. But they’re a decent way to stretch your budget, test out slot games, and, if luck’s on your side, actually walk away with something to show for it.

Top UK Slot Developers: The Brains Behind the Reels

Let’s give some credit where it’s due — those dazzling reels and chaotic bonus rounds don’t just invent themselves. The top UK slot developers are the masterminds behind your favourite wins (and near misses), and knowing who’s who can help you find games that match your style.

Here’s a whistle-stop tour of the best slot providers UK players keep coming back to:

➡️ Red Tiger Gaming – Known for sleek design, Daily Drops & Wins, and timed jackpots. Great for quick-hit entertainment and flashy features.

➡️ Blueprint Gaming – The folks behind Fishin’ Frenzy, The Goonies, and a whole Jackpot King empire. Quirky themes + serious jackpot potential = a Blueprint special.

➡️ NetEnt – A pioneer in the slots world. Starburst, Gonzo’s Quest, Twin Spin — the list goes on. Polished visuals, tight gameplay, and some of the most iconic slots ever made.

➡️ Microgaming – Now rebranded as Apricot, but still legendary thanks to Mega Moolah and hundreds of classic video slots. Their progressive jackpot network remains one of the biggest in the business.

➡️ Play’n GO – Masters of high volatility. Book of Dead, Reactoonz, Moon Princess… if you like slots that swing between feast and famine, this is your jam.

➡️ Nolimit City – Not for the faint-hearted. These are dark, edgy slots with max win caps that could give your heart a workout. Think xWays, xNudge, and chaos in reel form. For serious slot thrill seekers only.

➡️ Pragmatic Play – We’ve already sung their praises, but they’re everywhere for a reason. High-volatility hits, polished mechanics, and non-stop releases.

These slot software providers don’t just churn out games — they define trends, set the bar, and keep the UK slot scene spinning. If you’re ever lost in a sea of titles, filter by developer. The name alone can tell you everything you need to know.

Not sure which developer suits your style of play? Use our slot database to filter by provider, RTP, features, or even reel count — because one-size-fits-all spins just aren’t our thing.

Mega Moolah & Friends: The Progressive Powerhouse

If there’s one name that gets slot players twitchy with jackpot fever, it’s Mega Moolah. This iconic progressive jackpot slot from Microgaming (now Apricot) has been around since 2006, and it’s still responsible for some of the biggest online wins in history — we’re talking multi-million pound life-changers.

But Mega Moolah isn’t just a one-slot show anymore. Oh no. Microgaming quickly realised they were onto a good thing and did what any self-respecting game studio would do — created a whole Mega Moolah multiverse.

Here’s a peek at the jungle-themed original and its spin-off entourage:

➡️ Mega Moolah – The classic. African savannah theme. Four-tiered jackpot. Iconic status.

➡️ Mega Moolah Isis – Ancient Egyptian vibes with the same epic jackpot engine.

➡️ Mega Moolah Atlantean Treasures – An underwater twist with gorgeous graphics.

➡️ Mega Moolah Fortunium Gold – Steampunk styling meets progressive madness.

➡️ Mega Vault Millionaire – Glitzy, high-roller feel. The same Mega Moolah pot with a luxury reskin.

➡️ Absolootly Mad Mega Moolah – Wonderland-themed chaos with multipliers, respins, and wild features.

Each of these games is linked to the same pooled jackpot, which resets at £1 million but often grows much higher. And yes, they’ve all produced millionaires.

Fun Fact: The largest Mega Moolah win to date was over €19.4 million, won by a Belgian player in 2021 on Absolootly Mad. Not a bad day at the office.

Pragmatic Play: Where Bonus Features and Bananas Collide

Pragmatic Play has become one of the biggest hitters in the online slots UK scene — and for good reason. If you’ve ever played more than two slots in your life, chances are at least one of them was a Pragmatic release. Their games are slick, feature-packed, and designed to deliver high-volatility thrills that can go from “meh” to “mega” in a matter of spins.

They’re also the ones behind Daily Drops & Wins, which is why their titles pop up everywhere in tournaments and prize promos.

Why Players Love Pragmatic Play Online Slots:

➡️ High Volatility, High Drama – Pragmatic loves a slot that either pays in fireworks or eats your budget whole. No middle ground. Perfect if you like walking the line between heartbreak and jackpot glory.

➡️ Bonus Features Galore – Think tumbling reels, expanding wilds, pick-me bonuses, gamble features, free spins, multipliers… and usually all in one game.

➡️ Mobile-Friendly – All games are optimised to run beautifully on mobile. If you’re playing slots on your commute (or pretending to “reply to emails”), Pragmatic’s got your back.

➡️ Licensed by the UK Gambling Commission – With the number 56015

Standout Pragmatic Play Titles:

⭐️ Sweet Bonanza – A chaotic sugar-fuelled grid slot where clusters pay and multipliers explode. Think Candy Crush, but with money.

⭐️ The Dog House Megaways – Wiggly-tailed mayhem. Packed with sticky wilds and up to 117,649 ways to win.

⭐️ Big Bass Bonanza Series – Probably the most successful fishing franchise since Animal Crossing. Watch out, though: there are more Big Bass spin-offs than Marvel sequels at this point.

⭐️ John Hunter Slots – Pragmatic’s answer to Indiana Jones. They’ve sent this guy raiding tombs in Egypt, Mayan temples, ancient Greece, and probably someone’s garden shed at this point.

Big Bass Bonanza: The Fishing Slot That Launched a Thousand Spin-Offs

If you’ve ever spun a reel in your life, you’ve probably encountered Big Bass Bonanza — or one of its many, many, many relatives. What started as a simple fishing-themed slot from Pragmatic Play has now ballooned into an entire franchise. It’s like the Fast & Furious of online slot games: same idea, different location, more explosions.

The original Big Bass Bonanza launched in 2020 and quickly hooked a fanbase with its easy gameplay, charming visuals, and the ever-popular fisherman wild who hauls in cash during the bonus round. Players were hooked (sorry) — and Pragmatic reeled out spin-offs faster than you can say “catch of the day.”

Big Bass Bonanza Series Highlights:

⭐️ Big Bass Bonanza – The original. Simple 10-payline slot with free spins and fisherman wilds. Land money fish, and the bearded guy nets them in for you. It’s basic, but it works.

⭐️ Bigger Bass Bonanza – Like Big Bass, but with flashier fish and bigger win potential. Think of it as Big Bass in a Hawaiian shirt and speedboat.

⭐️ Big Bass Splash – A more advanced version with random modifiers in the free spins round. Hook in extra wilds, more fish, or extra spins. It’s the chaotic cousin at the family BBQ.

⭐️ Big Bass Amazon Xtreme – More jungle, more multipliers, and more fish. The series starts getting into adventure slot territory here.

⭐️ Big Bass Hold & Spinner / Keeping It Reel / Vegas / Bonanza 3 Reeler – Honestly, at this point, there’s a Big Bass Bonanza for every season. Winter Edition pending.

Why Players Keep Coming Back:

✔️ Low-stakes friendly with high win potential

✔️ Simple but satisfying bonus features

✔️ A theme that somehow never gets old (seriously, why is fishing so addictive?)

✔️ Available at nearly all top online slots UK casinos

Different Types of Online Slots

There’s more to online slots than just spinning reels and hoping for the best. Over the years, developers have experimented (and occasionally lost the plot) with new mechanics, layouts, and win systems — which means there’s a type of slot for pretty much every kind of player.

Here’s a breakdown of the main types of slot games:

⭐️ Classic Slots

Think 3-reels, fruit symbols, and the occasional cheeky BAR or bell. These are digital nods to the old-school pub fruit machines — no gimmicks, just clean spins and steady gameplay. Great for newbies or purists who think modern slots are a bit too… “extra.”

⭐️ Video Slots

These are the standard now. Usually 5 reels, often 20+ paylines, with bonus rounds, wilds, scatters, and more bells and whistles than a Vegas hotel lobby. Themes range from mythical gods to disco pugs. If you’ve played any slot in the last 10 years, it was probably a video slot.

⭐️ Megaways Slots

Developed by Big Time Gaming and now licensed to everyone under the sun, Megaways slots change the number of symbols on each reel every spin. That means up to 117,649 ways to win (because math). They’re fast, chaotic, and usually loaded with free spins, multipliers, and cascading wins. Think Bonanza, Big Bass Splash Megaways, and Dog House Megaways.

⭐️ Slingo Games

Slingo is what happens when bingo and slots get together and make something weirdly addictive. You spin to mark numbers on a bingo grid, complete lines for wins, and trigger wilds, bonuses, or the occasional banker deal. Popular picks include Slingo Rainbow Riches and Slingo Deal or No Deal — chaotic, brilliant, and weirdly satisfying.

⭐️ Cluster Pays

These ditch paylines altogether. Wins happen when symbols form clusters — the more, the merrier. Games like Sweet Bonanza and Jammin’ Jars thrive on this format. Great for players who like a bit of grid-based chaos and popping candy vibes.

⭐️ Crash Games

Not technically “slots,” but they’ve muscled their way into the scene. In crash games, you place a bet and watch a multiplier rise… until it crashes. Cash out before it drops, or lose the lot. Simple, addictive, and very, very risky. Popular crash titles include Aviator, Spaceman, and Maverick — and yep, they’re all on a mission to explode your bankroll or double it in two seconds flat.

Maximum Stake Limits on Online Slots (UK 2025)

If you’ve noticed your max bet button feeling a bit… restricted lately, it’s not your imagination — it’s the new UKGC maximum stake limits kicking in.

As of April 2025, the UK Gambling Commission (UKGC) introduced mandatory maximum stake caps for online slots across all UK casino sites. Why? In short: player safety, reduced gambling harm, and an industry-wide push toward more sustainable play.

Here’s how it breaks down:

⚠️ Players aged 18–24 now face a maximum stake limit of £2 per spin on all online slot games.

⚠️ Players aged 25+ are capped at £5 per spin.

These limits apply across all licensed UK online casinos — no exceptions, no loopholes, and no sneaky turbo-mode workarounds. So if you’re trying to throw £10 on one spin of Big Bass Bonanza, prepare to be politely told: “not today, mate.”

Why the Change?

The UKGC cited research showing that younger players are more likely to engage in risky gambling behaviour, and these new caps are meant to provide a safety net — especially on high-volatility slot games where big bets can vanish faster than your weekend plans.

And if you’re wondering whether this ruins the fun: not really. Most bonus features, free spins, and even jackpot chances still trigger at lower bets. It’s more about responsible gaming than limiting gameplay.

What It Means for Players

✔️ You can still play all your favourite online slot games in the UK — just with a more measured stake.

✔️ Casinos must now implement age-based verification and stake enforcement tools.

✔️ Expect smoother, more sustainable play — and maybe fewer ‘I blew it all on one spin’ regrets.

These new slot stake limits might take a little getting used to, especially for high rollers, but they’re here to stay. And honestly, we think it’s a decent move. You don’t need to max out your balance to enjoy the spin — sometimes, less is more (especially when your bankroll lasts longer than five minutes).

Slot Features Glossary: Slot Mechanics Decoded

New to online slots or just wondering what all those flashy animations actually do? Welcome to our Slot Features Glossary — where we break down the jargon and give you the lowdown on the most common (and chaotic) slot mechanics UK players will encounter.

Think of this as your reel roadmap. Here’s what you’ll find spinning your way:

⭐️ Sticky Wilds – These wild symbols stick in place for multiple spins. Think of them like clingfilm… but far more profitable.

⭐️ Expanding Wilds – A single wild symbol expands to cover the entire reel. More wilds, more chances to win — what’s not to love?

⭐️ Multipliers – Boosts your win by 2x, 3x, 10x, or even 100x in some slots. A win’s great. A win x25? Better.

⭐️ Respins – A cheeky extra spin triggered by certain symbols. Usually free, and sometimes only certain reels spin again.

⭐️ Free Spins – The holy grail. Land the right combo (often 3 scatters), and you’ll be whisked away to a bonus round with no deductions from your balance — and possibly boosted features.

⭐️ Bonus Rounds – Mini-games or extra screens where the real money (or heartbreak) happens. Pick-me games, wheels, or expanding reel adventures.

⭐️ Gamble Feature – Feeling lucky? Some slots let you double (or quadruple) your winnings in a coin flip or card game. Just remember: it’s called a gamble for a reason.

⭐️ Cascading Reels – When you land a win, those symbols explode and new ones fall into place — like slot Tetris, but potentially profitable.

⭐️ Bonus Buy – Not available in the UK (cheers, compliance), but elsewhere this lets you pay extra to trigger the bonus feature instantly. Tempting, but alas, not for UK players.

⭐️ Volatility – High volatility = rare but juicy wins. Low volatility = more frequent, smaller wins. Medium = a bit of both. You pick your poison.

For more slot features explained, use our filter tool to find games by bonus features — whether you want sticky wilds, multipliers, or cascading chaos. It’s the fastest way to get to your favourite mechanics, minus the fluff.

Stay in Control: Responsible Gambling

Online slots should be fun — not stressful. If you ever feel like your play is becoming more than just entertainment, it’s time to take a breather. Use casino tools like deposit limits, cooling-off periods, and self-exclusion to keep things in check.

Need extra support? Visit BeGambleAware for advice and resources, or GamStop to self-exclude from UK casino sites.

Gamble smart. Play safe. Stay in control.

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