Top software providers are constantly pushing the envelope with the best slot machines. Find the most popular slot games with our team’s help – there’s an exciting game for everybody.
Unearth the most famous slots with a range of slot bonus features, slot themes, slot machine lines, and other types of slots. Searching the internet for the best slot machines to play online can be a hard task because of the vast array of games.
So we have created a list of all the most popular mobile casino games available for online casino players in December 2021. The great news is that you can find the best slot games here and also utilise the promotional free spins no deposit and free spins promotions with no wagering, there’s plenty of deals for all slot players.
Once you choose your favourite online fruit machine game you can check the list of all slots brands online to play these on.
Find out more in our all slot games guide:
Table of Content
- 1 UK Most Popular Slot Games 2021
- 1.1 Starburst Slots
- 1.2 Cleopatra Slots
- 1.3 Immortal Romance Slots
- 1.4 Gonzo’s Quest Slots
- 1.5 Wolf Run Slots
- 1.6 Da Vinci Diamonds Slots
- 1.7 Tomb Raider Slots
- 1.8 Mega Moolah Slots
- 1.9 Paws of Fury Slots
- 1.10 Raging Rhino Slots
- 1.11 Pharaohs Fortune Slots
- 1.12 Mermaids Millions Slots
- 1.13 Harry Trotter The Pig Wizard Slots
- 1.14 Eye of Horus Megaways Slots
- 1.15 Return of Kong Megaways Slots
- 1.16 Playboy Gold Slots
- 1.17 Deal or No Deal Jackpot King Slots
- 1.18 Vikings Go Wild Slots
- 1.19 The Goonies Slots
- 1.20 Sizzling Hot Deluxe Slots
- 1.21 Siberian Storm Slots
- 1.22 Mermaids Diamonds Slots
- 1.23 Lucky Panda Slots
- 1.24 Rich Wilde & The Book of Dead Slots
- 1.25 Guns N Roses Slots
- 1.26 Rugby Star Slots
- 1.27 Dead or Alive Slot Game
- 1.28 Goblin’s Cave Slots
- 1.29 Book of Ra Slots
- 1.30 Private Eye Slots
- 1.31 Thunderstruck II
- 1.32 Lucky Leprechaun Slots
- 1.33 Action Bank Slots
- 1.34 Aloha Cluster Pays Slots
- 1.35 Family Guy Slots
- 1.36 Game of Thrones Slots
- 1.37 Wolf Gold Slots
- 1.38 Sweet Bonanza Slots
- 2 Best Online Slot Machines
- 3 Full List of All Online Slots to Play
- 4 Playing Online Slots Machines Online
- 5 Best Slot Games for RTP
- 6 List of Slot Games
- 7 What are the Most Popular Mobile Casino Games?
- 8 What are the Most Popular Online Casinos?
- 9 Frequently Asked Questions
- 9.1 Which Slot Developer has the Best Games?
- 9.2 Microgaming Popular Slots
- 9.3 Blueprint Gaming Popular Slots
- 9.4 Yggdrasil Slots
- 9.5 Playtech Slots
- 9.6 Novomatic Slots
- 9.7 Pragmatic Play
- 9.8 What Are The Best Slot Features?
- 9.9 Wilds
- 9.10 Free Spins Round
- 9.11 Multiplier Features
- 9.12 Win Both Ways
- 9.13 Stacked Wilds
- 9.14 Progressive Jackpot Slots
- 9.15 What Are The Most Popular Slot Themes?
- 10 Summary of All Slot Games
UK Most Popular Slot Games 2021
Here is a list of the most popular slots games online players love to play in December 2021:
Starburst is a jewel themed slot game powered by Net Entertainment Games. It is known for its offers of free spins promotions and it is one of the best classic casino slot games in the slot world, this goes down as the best classic slots.
As you’d expect the game comes with stars, gems and jewels. This game is easy to find on all of the top casino slot sites and is often one of the most played on casino accounts.
One of the main features of this slot machine is that it is a timeless game with win both way features and wild reels that appear on the middle reels.
Check out all the best Starburst Slot Free Spins Bonuses.
Cleopatra Slots is a 5 reel fruit machine game that has 20 ways to win lines to give higher chances to secure that big win jackpot prize. This game is an advanced version of classic fruit machines.
The symbols include Cleopatra, Pyramids, Eye of Ra, Scarab Beetles and more. The Cleopatra Scatter can trigger the free spins, there are up to 180 free spins with the re-trigger feature. There’s also wilds and an incredible max win of 10,000x your stake.
Find the medium variance slot machine and the regular wins, plus you’re also able to enjoy some sizeable wins.
Check out all the best Cleopatra Slot Free Spins Bonuses.
Immortal Romance Slots
Immortal Romance Slots is the most popular Microgaming slots game in December 2021.
The five-reel fruit machine has 243 ways to win slot lines which is a common mega ways slot feature. The vampire and mystical themed slot comes with different stars in the game, look out for Troy, Amber, Michael and Sarah. Each of which appears as free spin bonuses in the game and also scatter symbols that trigger those features.
The max win on this game is 12,000x your stake. This slot game is a love and romance-themed slot that’s full of action.
Check out all the best Immortal Romance Slot Free Spins Bonuses.
Gonzo’s Quest Slots
Gonzo’s Quest is a popular slot machine with 5 reels and 20 winning lines, the game by Net Entertainment offers free spins, wilds and the most notable feature is the Avalanche Reels.
This slot machine comes with multiplier bonuses, an exciting 37,500x your stake jackpot win and also comes with a Mayan theme that is set in the jungle.
It showcases the bird mask, green mask, snakes, birds and alligator symbols. Play with scatters, wilds and lots of fantastic wins.
Check out the best Gonzo’s Quest Promotion Free Spins.
Wolf Run Slots
Wolf Run is a 40 win line slot from IGT Software, that’s known for being a land-based slot game turned online slot that is a fixture at many brick and mortar casinos.
Although it showcases basic symbols and logos, it is still a game that challenges all of the best slots available online. It is easy to play and still packs bonus slot features throughout.
The animal-themed slot machine exhibits stacked wilds with the Wolf Run logo and also the chance to activate free spins. Find out more about the video slot and how to get hold of Wolf Run Free Spin Promotions.
Da Vinci Diamonds Slots
Da Vinci Diamonds Slot is an art and gem style game with 5 reels, 20 win lines and cascading reels.
The game has a return to player of 94.94% which is close to the average slot machine payouts percentage of 95%. Find the best payout percentage slots using our full guide.
It has a jackpot of 25,000x your stake, offering an incredible max win. The icons are a number of famous paintings such as Mona Lisa. It also had diamonds, gems and more.
Check out the Da Vinci Diamonds Slot Promotional Free Spins.
Tomb Raider Slots
Tomb Raider Slots is a Microgaming slot with 5 reels and it’s also a 15 payline slot.
Join Lara Croft on an adventure slot game, as you explore tombs. The symbols include Lara Croft, Tomb Raider Logo, a map, a relic and a tiger.
The slot features keep you engaged throughout the gameplay, thanks to the wilds, scatters and free spins. Unlock 10 free spins with a 3x multiplier, there’s also a pick me round bonus.
Find the Tomb Raider Free Spins as we pick out the best online casinos and welcome offers especially for this game.
Mega Moolah Slots
The Microgaming slot machine is one of the most popular and it’s one of our top progressive jackpot slots, meaning that there are huge wins up for grabs. Again, this well-known slot has 5-reels but this time it comes with 25 winning combinations.
This African Savannah slot game has elephants, zebras, giraffes, lions and buffalos. The game has wilds, a jackpot, multipliers and regular payouts.
If you’re interested in trying out the game risk-free then look for the Mega Moolah Free Spin Promotions that our team have sifted through.
Paws of Fury Slots
Do you enjoy martial art online slot games?
This game merges animals, martial arts and Chinese themes together with an exciting slot. The 5-reel, Kung Fu slot with 20 pay lines.
There’s a panda who’s the star of the show, it also showcases food, books, letters and more. Check the Paws of Fury Promotional Free Spins.
Raging Rhino Slots
It offers an animal theme and is about angry rhinos and it is based on the African Savannah wildlife. The fast-paced slot comes with an entire range of symbols, bonuses and winning combinations. The icons include
Pharaohs Fortune Slots
Pharaohs Fortune Slot is a 15 payline game from IGT with an ancient Egyptian theme. This classic slot is one that emulates the original 5 reel slots.
You will find Scarab Beetles, Eye of Horus, Sun God, Horse and Pyramids icons.
One of the most famous aspects of this game is the soundtrack, the well-known “Walk Like An Egyptian” plays as you spin the reels. Play for real money and get your hands on free spins with the Pharaohs Fortune Free Spins.
The three red stones are scatter symbols and trigger free spins. Other bonus rounds include multipliers and a generous return to player of 96.53%.
Mermaids Millions Slots
Mermaids Millions is an ocean-themed slot with 5 reels and 15 pay lines.
The slot machine has a classic design with symbols such as a treasure chest, pearls, starfish and gems. The Microgaming slot has a jackpot of 7,500x your stake. Find the biggest Microgaming jackpots with our full guide.
Bonus features on this slot game include 10 free spins, 3x multiplier, pick ’em round and jackpot wins.
It’s a low variance slot but it also reaches medium level volatility, it comes with lots of regular wins. The Mermaids Millions Slot Free Spins offer slot players the chance to play risk-free spins without the need to stake.
Harry Trotter The Pig Wizard Slots
Harry Trotter is a hilarious take on Harry Potter in this magic-themed slot machine. The conventional layout is 5 reels, 3 rows and 20 paylines.
There are themed bonuses with Squeal or No Squeal, Magic Mirror, Trail Magic and Cash or Gold Jackpot. It’s an enjoyable game with the Pig Wizard himself starring up the show, there are other symbols such as a wizard hat, logo, bags of cash and a spellbook.
Eye of Horus Megaways Slots
This slot machine is part of the Megaways series, which offers more winning combinations. The Eye of Horus Megaways Slot showcases 15,625 ways to win.
Again, this slot game is part of the Egyptian theme and is one that is highly popular on most casino sites. It offers a free spins feature, wilds, symbol upgrade and a number of winning combinations.
The bonus round of free spins lands you 12 free spins, whereas the wilds can offer you a symbol upgrade, changing symbols into high paying combinations.
The 6-reel game has artefacts, the Eye of Horus and other incredible symbols spread across the grid. Find the Eye of Horus Megaways Free Spins Bonus.
Return of Kong Megaways Slots
This version of Return of Kong is a Megaways Slot and that’s why it offers up to 117,649 ways to win.
It features a gorilla called Kong and he sleeps beside the 6 reels and if he wakes up, you’re in luck. The game offers several bonus features including increasing multipliers, free spins, re-spins, mystery symbols and more.
The graphics include Kong, Barrels, Rhinos and Tigers. This slot machine has a generous return to player percentage and is a medium variance game.
Find out more about the Blueprint Gaming slot and the chance to unlock the Return of Kong Megaways Promotional Free Spins.
Playboy Gold Slots
Playboy Gold is part of the famous brand and it’s been made into an exciting 100 win line slot game.
This is one of the rarer online casino slots with a different grid layout, it has a 6 x 10 design with 6 reels and 10 rows. It is a unique slot game with the Playboy logo, coins and gems.
There are numerous bonus games including Wilds, Mega Symbols, Click Me Bonus, Re-Spins and Instant Wins.
The low variance slot pays out regularly and although the wins are usually smaller, you can enjoy frequent payouts. Find risk-free spins with a welcome offer using our review and guide on Playboy Gold Slots Free Spin Bonuses.
Deal or No Deal Jackpot King Slots
Taking on the theme of the popular television game, this slot is one of the most exciting game-show themed slots.
This edition is a Jackpot King Slot with a progressive pot that reaches millions of pounds. It mimics the real show with boxes and big prizes. The slot game has 6 reels, 117,649 paylines and lots of bonus games including free spins, increasing multipliers and cascading reels.
It has a great payout percentage of 95.83% RTP and there’s the opportunity to land a 10,000x your stake.
Get your hands on promotional free spins for Deal or No Deal Jackpot King.
Vikings Go Wild Slots
Are you a fan of Viking-themed casino online slot games with lots of wild symbols?
This Viking game is one that offers plenty of excitement, this comes in the form of wilds. The most noticeable feature is the sticky wilds that remain in place and there are also wild reels too. That means there are lots of chance to land wins and also combine huge payouts.
The high variance slots game has 5 reels, 25 paylines and is a favourite from the Yggdrasil Software Provider. The game brandishes lots of Viking symbols, Viking Ships, Coins and Characters. The backdrop has the huge Viking ship and the ocean that adds to this theme.
With an RTP of 96.3% offer lots of wins and also a jackpot of £12,500. Get the Vikings Go Wild Free Spins Bonuses.
The Goonies Slots
The classic and cult movie that took over everybody’s screens in the ’80s is now a favourite slot machine, this movie-themed slot game has 5 reels and 20 paylines.
There are lots of bonus games with characters from the film including Chunk, Data, Willy and Mikey. Each of them has a bonus with shuffle reels, colossal symbol features, free spins and wilds.
There are levels of bonus games once you land scatter symbols. This includes One-Eyed Willy Bonus Scatters, Key Symbols & Bonus, Skeleton Organ Bonus Pick, Fratelli Hideout Bonus, & Multipliers.
It has an RTP of 96% which is a great payout percentage, you can find this game at most online casino websites. Find the Goonies Slot Free Spins with our help and guide.
Sizzling Hot Deluxe Slots
The classic fruit machine theme reminds us of timeless games, it comes with 7s, bells and fruits.
This slot machine has scatters and gamble features that allow you to double up your wins. It offers simple gameplay that is easy to play and you can enjoy a medium variance.
The return to player is 95.66% and pays out frequently. The slot machine has 5 reels and is also a 5 win line slot machine.
Get Sizzling Hot Deluxe Free Spins Promotions with the best welcome offers and risk-free deals for slots players.
Siberian Storm Slots
As you’d imagine the game is set in Siberia and is based around the beautiful Siberian tiger. The game has a MultiWay Xtra Award Feature that provides extra winning combos.
All of the icons and symbols revolve around the tiger, it is a simple game to play but also has free spins, wilds and there’s a jackpot of £3,000.
Check out the Siberian Storm Slots Promo Free Spins with our full review in December 2021.
Mermaids Diamonds Slots
Mermaids Diamonds Slots is a Play’n Go Slot with 5 reels, 72o paylines and a number of bonuses.
This game is underwater themed and comes with an exciting number of bonuses and a large jackpot of up to £500,000.
Bonus games include extra wilds, expanded wilds and scatters. Land free spins and enjoy colourful reels from this accessible game, find out how to get hold of promotional Free Spins for Mermaids Diamonds Slots.
Lucky Panda Slots
Say hello to another star panda with the Lucky Panda Slot in December 2021.
Lucky Panda has the recognisable Playtech Slot All Ways Wins, this means you can with both ways and it makes it easier to capture those winning combinations.
The slot machine is different, thanks to the 1024 payline slot mechanics, it offers a number of ways to win and this is much of the appeal. The reels include a number of Eastern animals such as monkeys, tiger and snake.
Get your hands on lots of spins and promotions with the Lucky Panda Free Spins Promotion.
Rich Wilde & The Book of Dead Slots
The Book of Dead is a famous slot and is all about Rich Wilde and his explorations. This explorer themed slot machine has 5 reels and 10 paylines.
Play’n Go has done a great job with this game offering plenty of excitement. It has Anubis, Horus, Osiris and Rich Wilde symbols.
There are lots of expanding symbols and other bonus games including a free spins bonus. The ancient Egyptian theme has lots of exciting functions with a sacred chamber.
Book of Dead is known for the free spin bonuses, activate the promotion with the Book of Dead Free Spins.
Guns N Roses Slots
Guns n’ Roses Slot is all about the world-class rock band and is one of the best music-themed slots.
This slot machine is a 5 reel, 20 paylines and there’s a range of bonus games. The NetEnt slot has Expanding Wild, Appetite for Destruction, Vinyl Scatters, Wheel of Fortune and Encore Free Spins.
The medium variance casino game has an RTP of 96.98%. That’s an incredible payout percentage, expect regular wins and play for the 225,000 coin jackpot.
Check out our full review with the Guns n’ Roses Free Spins.
Rugby Star Slots
Rugby Star Slots is a sport-themed slot game and it’s part of the star series with lots of famous rugby players.
The 5-reel, 243 lines and Microgaming slot machine have medium variance. The reels come with rolling reels and the icons include rugby players, a stadium, boots and a rugby ball.
Look for the Rugby Star Wilds, the logo represents the chance to substitute any symbol except the scatter. Also, unlock free spins, multipliers and a wild pass feature.
Check out the full review on the software, the RTP and more with the Rugby Star Slot Free Spin Bonus.
Dead or Alive Slot Game
Wanted – dead or alive! This wild-west themed slot game offers a cowboy style and is an exciting game throughout. Are you ready to go head to head in a shootout?
Dead or Alive Slot is a Net Entertainment game with stunning graphics and fast gameplay – not only that but it also comes with exhilarating bonus games. This includes free spins, wilds and more.
This 5-reel and 9 payline slot is simple to play yet it offers win all way methods, making it easier to accumulate wins.
With a high variance, a kind payout percentage and the opportunity to win £54,000 in one spin, it’s worth joining up and getting a welcome offer such as Dead or Alive Free Spin Promotions.
Goblin’s Cave Slots
Enter the cave of mystery in a quest to unravel great prizes on this 3-reel slot machine.
This simple game comes with an intriguing theme and it is easy to play with 3 reels and 3 paylines. The cave slot machine has an amazing return to player percentage of 96% and it also has scatters, wilds and a classic design.
The icons include rings, coins, a crown and a backdrop with a goblin and a treasure chest full of gold.
Find Goblin’s Cave Free Spin Offers using our help, as we sift through the best welcome promotions and also review the game, the bonuses and how to win.
Book of Ra Slots
Book of Ra isn’t the first of its kind but it’s celebrated as one of the most popular Egypt themed slots available online. The 5 reel slot game has 9 paylines and is a top-performing casino game from Novomatic.
Like many Novomatic slots, this game comes with lots of symbols, bonuses and 5,000x your stake. This slot machine is a fixture at many land-based casinos. The game offers a classic game that comes with Mummies, a Book and a Scarab Beetle.
It comes with free spins, wilds and also a 5,000x your stake. Check out more with the Book of Ra Free Spins.
Private Eye Slots
Become a detective and search for criminals, cases and big prizes with this Microgaming Slot.
This slot game is an inspector and detective themed slot and comes with clues and cliches. It has a detective, telephone, camera, handcuffs, crime scene and a car.
With a 97.5% return to player percentage is very generous and makes it one of the best Microgaming RTP slots. It has 243 paylines, 5 reels and it comes with bonus features. The features include free spins, a jackpot and a multiplier.
Get hold of Private Eye Slots Free Spins Promotions and enjoy risk-free wins to try this game out for yourself. The fun to play slot can be trialled with the welcome offers. If you’re a fan of most online slots with a fascinating them, then you’ll enjoy this online casino game, you can also enjoy free slot games that allow you to trial a slot before staking your own cash.
Thunderstruck 2 Slot is a Norse-mythology game with gods and lots of interesting characters that could help you land a win.
The game comes with Thor, Odin, Loki and Valkyrie – these gods provide their own free spins. Each free spin feature has its own strengths with multiplier wins, wild magic feature, rolling reels and wild raven feature.
This slot was released in 2010 by Microgaming, it’s colourful and has Thor hammer bonus symbols. The RTP is 96.65% meaning you can expect regular wins.
Make the most of the 243 ways to win and 5 reels with these fast-paced games. It also offers the opportunity for Thunderstruck II Free Spins.
Lucky Leprechaun Slots
It’s a jackpot slot game with bonus features – there’s a pick ’em bonus, free spins and sticky wilds.
From the theme music to the symbols, there are lots of cliches that make this game fun to play. You’ll find gold, Guinness, leprechauns, rainbows and more.
Get hold of some incredible welcome offers and find out more about the payout patterns of this slot with the Lucky Leprechaun Free Spin Bonuses.
Action Bank Slots
Action Bank is all about breaking into the bank and get hold of money. It’s a conventional game with 5-reels, 20 win lines and a classic design from Barcrest. It is simple and brandishes noughts and crosses and winning combos.
The bonus feature has the Big Bank Bonus Game, 30 Free Spins, 15 Locked Vaults, Scatters and Wilds.
Get hold of multiplier wins and lots of winning combinations. It comes with a payout percentage of 95.16%.
Check out our Action Bank Free Spin Bonuses with our full slot review.
Aloha Cluster Pays Slots
Aloha Cluster Pays is a popular game due to its cluster pays and ways to win. The NetEnt slot was released in 2016 and it comes with an incredible RTP of 96.42%.
The exciting game is a beach and tiki-themed slot with 6 reels that have regular wins with low volatility. It comes with colourful Hawaii style reels and has tiki, pineapple and tropical symbols.
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It’s an IGT Software slot with medium variance, a great return to player and it offers a television, logo and Stewie’s gun.
Find promotional free spins for Family Guy Slots.
Game of Thrones Slots
An extension of the famous series, Game of Thrones is a hit.
Are you looking for the mother of dragons in this exciting slot machine? This 5-reel slot with 15 paylines and you can also enjoy the scatters, wilds and the gamble feature.
It comes with a medium variance and you can expect lots of wins, there’s also a big jackpot of £75,000. Check out the Baratheon, Lannister, Stark and Targaryen bonus games.
Before you play, be sure to try out the slot without any risk, you can enjoy Game of Thrones Free Spin Bonuses.
Wolf Gold Slots
This Wolf Gold Slot is a Native American themed slot with 5 reels, 25 paylines and easy to use bonus games.
The Pragmatic Play casino game has money respins, a Mega Jackpot and the chance of endless free spins with the retrigger of the bonus.
There are moon symbols, cougars, eagles and wolves. The Wolf Wild makes it easier for you to get hold of wins and bigger returns.
Get your Wolf Gold Free Spins Bonuses with our team’s help, it is easy to land free spins and welcome offers using our review guide.
Sweet Bonanza Slots
Sweet Bonanza is a widely recognised slot machine with an All Ways engine from Pragmatic Play. It offers 6 reels, 5 rows and easy ways to win.
It’s all about a vibrant set of reels and a tonne of sweets, get lollipops, apples, bananas and berries. It’s an eye-catching slot game with a multiplier symbol that comes in the form of a rainbow icon.
The slot machine has an exciting jackpot win of 21,175x your total stake. Play for free when you get hold of welcome offers using our review- Sweet Bonanza Slot Free Spins.
Best Online Slot Machines
When searching for the best online slot machines players look at the RTP value of the games. The RTP will show which are the best paying online slot games to win on.
If you are interested in studying all the RTP values for slots, guides and the latest news on best strategies then our knowledge hub is the best place to learn.
The knowledge hub has all the best online slots tips and tricks to further your knowledge to hopefully win more money playing.
However, some players just like the design and features used on slot games with personal preference.
Lucky Slots To Play
Some players in the UK just feel certain slot machines are lucky and feel as though they are jinxed on the others.
If you are lucky on a specific slot machine you will personally start to think, out of all the online casino games available, this is the best one. The truth is a lot comes down to personal preference and this is why we have created a full list of various games available to play online.
We would recommend having a look at a few of the different games to ensure you get the best one for you. If you don’t want to try them all out or play all of them, make sure to read our pages about them. Here you can find out more about the game and get an insight of if you will like the game or not.
Full List of All Online Slots to Play
We’re constantly updating our full list of online slots games and titles for you to get into. You may even find your new favourite slot game in our list! As always, do let us know your comments and feedback – we’d love to hear from you as we build our lists!
Have you had the chance to play all these online fruit machine games?
At Boomtown we would love to hear your feedback on which you prefer from our in-depth list of all slot games available online to play.
Playing Online Slots Machines Online
If you’ve already been playing a few casino games and online slots, chances are you’ll know that there is a huge selection to pick from! Sometimes, it’s difficult to know where to start when it comes to picking the best games for winning big.
So, we’ve strived to make things a little easier on you by lining up the best slot machines online. There is information on what you can expect from them when you do start playing.
You’ll find that there are thousands of fantastic slot games out there! There is a wide variety of gaming developers helping to build games catalogues all over the web. So there really hasn’t been a wider choice for slots fans right now.
That’s why we’ve built our list – to help you find the most exciting games and the best chances for you to take away some serious money in the bargain.
Take a look at our list and do let us know if there are any of your favourites you’d like to add. We always appreciate and value your feedback!
Best Slot Games for RTP
We’ve lined up the best slot games for RTP as well as those which have lots of character and features. RTP, or Return to Player, establishes how often a game will pay out during its lifespan.
The higher the percentage, the more likely it will pay out at any given moment. Generally, most games should head for 93% or more. However, whether or not you actually win is, of course, luck of the draw! Many people look for the RTP of games before trying them.
List of Slot Games
Playing online slots is exciting, with lots of different themes and types of games readily available at online casino sites.
The list of slot games above shows some of the best games on the web. You can also find some of these on slot machines within casinos.
All of the 2021 slot game titles in our list offer real money play. This means that you can deposit and win real money.
Online real money slots have become more and more popular with many people playing them in December 2021. Due to the increase in real money slots, the list of slot games is forever increasing with more and more games to play each year.
What are the Most Popular Mobile Casino Games?
There are lots of exciting slot games and here’s our list of the most popular mobile casino games in December 2021 are:
- Goblin’s Cave (Playtech)
- Starburst (NetEnt)
- Sunrise Reels (Realistic Games)
- Cleopatra Slots (IGT Software)
- Private Eye (Microgaming)
- Mega Moolah (Microgaming)
- Immortal Romance (Microgaming)
- Book of Ra (Novomatic)
- Gonzo’s Quest (NetEnt)
- Thunderstruck 2 (Microgaming)
What are the Most Popular Online Casinos?
Playing slots is simple, there is a huge list of online casinos. Register at the best online casinos and find a catalogue of online slot machine.
The most popular online casinos to play online slot machines in December 2021 are:
- Top Overall Online Casino: 888 Casino
- Best Slots Online Casino: Wink Slots
- Best Welcome Bonus: Paddy Power Games
- Best Banking Options: 888 Online Casino
- Best Game Selection: LeoVegas
- Quickest Casino Withdrawals: Mr Green
- Highest Casino Free Spins Offer: BGO Casino
- Highest No Wagering Offer: Playojo Casino
- Popular UK Online Casino: MrQ
Frequently Asked Questions
Which Slot Developer has the Best Games?
No single slot software has the best games, each of the top game developers all have popular games in their own right.
Enjoy the likes of Playtech, Blueprint Gaming, Microgaming and Yggdrasil as you look for the best online slots. Play online slots from cutting-edge game developers.
Here are the top software providers:
Microgaming Popular Slots
Blueprint Gaming Popular Slots
Blueprint Gaming is a well-known developer recognised for its dynamic design, often using some exciting films such as TV Shows, Movies and popular animations as part of their slot stories.
Find all of the Yggdrasil slot games with our help.
Playtech is one of the most popular slot developers in the industry and they’re also known for the themes they utilise, they often have popular movie slots.
There are lots of different slot themes and popular slot games that have different lines and jackpots.
Pragmatic Play is one of our favourite slot developers, it offers a long list of slot machines.
Find Wolf Gold Slots and Sweet Bonanza Slots, they’re two of the most popular slot machines. Playing online slots are fun to play with this software and their fast-paced gameplay.
What Are The Best Slot Features?
Find the best slot game features to suit your preference, there are lots of different bonuses from wilds to free spins.
Here are some of our favourite bonus features:
Wilds are one of the most common features. Different slot games have a symbol that represents a wild, wilds can substitute for any other symbols, making it easier to land wins.
Free Spins Round
Free spins are exciting bonus rounds that offer free spins, meaning you can win risk-free spins in a bonus feature. There are different types of bonus rounds with 10 free spins, 12 free spins, 40 free bonus spins, 50 free spin offers and more.
Some games allow you to retrigger the free spins during your free spins, allowing you to get unlimited bonuses.
Multipliers provide lots of big wins, multiplier slots allow you to enjoy fantastic wins and there are different ways to activate this kind of win.
Win Both Ways
Conventional slots usually pay out left to right but with win both ways you get to enjoy right to left too.
One of the only things better than wilds is stacked wilds, these wilds stack up and make it easier to land wins.
Progressive Jackpot Slots
There are plenty of video slots and casino slot games that offer progressive jackpots. These slots have jackpots that continue to grow, each time slot players spin the reels.
Find the best progressive slots and play for huge pots of cash. Playing online slots with these types of rewards is hugely exciting and they often showcase different payouts.
What Are The Most Popular Slot Themes?
Find all of the popular slot machine themes below:
Summary of All Slot Games
We hope you have found our all slot games guide useful, we have looked at online slots, video slots, jackpot slots, progressive jackpots, free games and casino games, to bring you the best online slots around.
Our teams have reviewed the most popular games in the UK so you can find something suitable, whatever your tastes and whatever you are looking for.