Online Slots - Leading UK Slots

Everything you need to know about online slots in the UK

UK Online Slots 

Since the 1990s, slot machines have been a mainstay at online casinos and are the most popular games at any casino. Slot games have evolved from simple 3-reel, fruit machines to highly advanced slot adventures with highly innovative specialised features, exceptional graphics and fantastic gameplay. There are thousands of online slots boasting a diverse range of topics, themes, cutting-edge graphics and optimum sound quality. There are all types of slots at online casinos today, with anything from high payout progressive jackpots, to the humble 3-reel classic slot. 

With an abundance of online slots available, it can be challenging to stay informed about the latest offerings. To simplify this task, we've compiled a comprehensive list of the UK's most popular slot developers, offering a brief introduction to their latest masterpieces. This curated selection aims to provide you with quick insights into the newest developments, allowing you to dive swiftly into the action.

Different Types Of Online Slots Games

3-Reel Slots

Slots are rather like video games due to their features, yet there are straightforward classic 3-reel slots that are based on traditional slot machines with bells, sevens, fruit and bar symbols. They offer a more stripped-down gaming experience with fewer features and bonus rounds. The gameplay involves spinning the reels to get identical symbols on the pay lines. 3-reel slots machines tend to provide superior odds, and they are cheaper to play due to fewer pay lines and reels. 

5-Reel Slots

5-Reel slots are by far the most I demand games at online casinos. They stand out with engaging themes, special features, free spins and mini bonus games. You generally get from 10 to 30 pay lines, entertaining graphics and animations, arcade-style bonus rounds, and mini bonus games. 5-reel slots tend to include Wild symbols, that serve to replace standard icons to create wins. 

Progressive Jackpot Slots

Progressive jackpot slots offer very high payouts and have incremental jackpots that increase as more people play the game. There are stand-alone jackpots and networked progressive jackpots. The latter is shared with online casinos. These games take a tiny percentage of every player’s bets, placing them in a shared pool, which can bloat to an extremely high amount. 

Bonus buy-in slots

A new trend currently sweeping through online casinos is bonus buy-ins, whereby players can purchase the bonus games or a few spins. Such a feature has become useful with higher volatility slots allowing players to bypass standard play and move straight to the bonus features where the payout rate is better. The cost of buying-in is expressed as a multiplier of your stake, and you can choose from various amounts of free spins perhaps in rounds of 6, 8, or 12. 

Popular UK Slots 

With so many top-notch slots it’s hard to pick out a few, yet these slot titles are among the best UK slots. One title deserves a special mention. Starburst is undoubtedly one of NetEnt’s most popular and endearing releases in recent years. The game has captivated slot players with its outstanding visuals, spacey theme and high win potential. Released in 2012, Starburst is a staple at UK casinos, serving up unrelenting spinning action on 5-reels and 10 pay lines. Starburst uses a’ Both-Way wins’ game mechanic providing winning combinations with both ways. Whenever the magic Starburst icon lands on your reels, it replaces others and activates the ReSpins.Other popular slot titles include Cleopatra, Rainbow Riches, Double Bubble, Dead or Alive, Book of Dead, and Immortal Romance.  

Common slot features 

Wilds, Scatters, Multipliers are standard slot features and serve to make the game more exciting and enhance payouts. Wild symbols replace others to create winnings, while Scatters open up the free spins rounds. Multipliers can boost payouts tremendously making them an attractive feature. Avalanche Symbols and reels create a different setup whereby symbols cascade from above onto the reels replacing existing ones to create extra chances. When a win occurs, identical symbols will explode and disappear from view, and be replaced by others that fall on the reels like an avalanche.

Lines And Ways to Win

Standard slots use 3 or 5 reels and anything from one pay line, to 50. Pay lines and ways to win are increased with MegaWays slots. These games can contain over 117,649 ways to win, and 6 or 7 reels, and that means your winning possibilities increase. Famous titles in the MegaWays series take in Bonanza, Raging Rhino, Genie Jackpots, Legacy of Ra, and Irish Riches.

Bonus Features And Free Spins

Free Spins are hugely anticipated by slot players as they can boost the payout potential. Bonuses rounds and free spins have become commonplace with slot games, and many players seek out such features. The Scatter symbols usually trigger the free spins and bonus rounds while the Wild also has a part to play. Many slots have improved RTP percentages during such bonus rounds, making them highly desirable. Many new slots offer Bonus Buy-Ins, where you can purchase the bonus features to access the more lucrative bonus rounds without having to play through the base game.

Slots Bonuses 

There are free online slots No Deposit bonuses, which give you a gift before even making a deposit. Deposit bonuses, cashback offers, Free Spins and Free Chip are commonplace, and a few forward-looking casinos also offer slot bonuses when you deposit with a cryptocurrency such as Bitcoin. You can find daily, weekly and monthly slot bonuses and free spins offers, along with VIP Rewards and points when playing slots and other casino games. 

Online Slots Welcome Bonus

Slot bonuses are diverse and many and include the casino welcome bonus which are typically available to new customers when they try out new casinos. That is expressed as a percentage of your first deposit, gifting you bonus funds to play with after signing up. The welcome bonus is typically the most lucrative abs beneficial as it can double or triple your starling balance. Or course, the welcome bonus may consist of no deposit bonuses and Free Spins

Online Slots Free Spins 

Free Spins can form part of the slot gameplay, whereby you win a certain amount when you trigger them with the Scatter. Furthermore, many casinos offer free spins as part of a promotional offer such as the welcome bonus or regular free spins promos on specific titles.

What is Slots RTP% & What are The Highest Paying Slots?

All Slot games have an RTP percentage that shows how much the game pays back over time. It mostly shows you the house advantage and how much money the slot takes in. The higher the RTP, the better the slot pays. You should look for slots with an RTP of over 96%. If the RTP is below 92%, it is considered on the lower side, and the average is around 94% to 95%. Slots with RTP percentages exceeding 97% are considered excellent, while over 98% is phenomenal. The UK best slots with high RTPs include the following. 

Mega Joker by NetEnt has a superb RTP of 99.00%. When playing with maximum betting limits, your wins are transferred to the Supermeter. That permits you to cash out, and press Collect or play on and press the Spin button. 

1429 Uncharted Seas is a Thunderkick release with an RTP percentage of 98.6%. The slot has stunning visuals and an unusual setup with hand-drawn medieval-style maps with symbols and an unorthodox reel grid.

Jackpot 6000 is another NetEnt release with a high RTP percentage reaching 98.9%. The Supermeter mode can impact the outcome of your game, and high payouts and a retro vibe make this an exciting slot classic. 

RNG Slots

The question may arise whether slots are legit and fair? Random Number Generators (RNG) are what makes the reels spin randomly and independently from the previous spins. When you press the start button, the RNG generates a unique number determining the eventual outcome of the spin. It is near impossible to predict the result of a spin. The games at online casinos are invariably checked by external testing agencies with eCOGRA one of the more reputable ones. You can be sure that online slots are legit and very difficult to tamper with.

New Online Slots

There are hundreds of new slots released every day, yet not all become famous. UK players get a vast collection of new slots from renowned game developers. Although it isn't easy to pick just three, these mentioned below are newly released slots online to win real money.

Narcos is one such release that has struck a chord with UK players. Released by NetEnt in 2019, Narcos delivers superb features, loads of free spins, Walking Wilds, and other bonuses that you won't find on other slots.

Extra Juicy is another best UK slot release in the classic style. Developed by Pragmatic Play, the slot is a high volatility game with an RTP percentage of 96.52%. The game has progressive multiplier free spins, which is a neat touch making the game stand out from the crowd.

The original Dead or Alive has become a modern-day slot classic, and the follow-up, Dead or Alive II takes things one step further. Launched in 2019, the NetEnt release is another high volatility slot with an RTP percentage of 96.8%. The exciting Wild West theme and engaging gameplay have made Dead or Alive II is one of the best UK slots. 

Slots Tournaments

Slots Tournaments have become all the rage at online casinos, and you can find all kinds with various limits. Online daily freeroll slot tournaments are the most popular. There are slot tournaments with a small buy-in fee that goes towards the prize pool. You can compete against other players for the top position on the leaderboard. There are other tournaments as well, such as poker or blackjack, yet slot tourneys are the most in-demand by players and the commonly available.

Slingo Slots

Slingo Slots are a fun hybrid of online bingo games and online slots and are available at most online casinos in the UK. Top Slingo games include Slingo Centurion, Slingo Lobster Mania, Slingo Advance, Slingo Starburst, Deal or No Deal Slingo.