Discover the best 4 reel slots in the UK. 4 reel slots are slot machines that have exactly four symbol reels. These slots are fun casino games with free spins, bonus features, special wilds and many other mechanics.
On this page, you can find the best games to play, learn how 4-reelers work, what kind of features these games have and see which providers make these slots.
We have gone through the 4 reel slots that you can play for real money and picked the best ones. This is a hand-picked list of the top 4-reel online slots for you to try.
The best 4 reel slots are listed in the table below:
| Rank | Name | RTP | Max Win | Where to Play |
|---|---|---|---|---|
| 1. | Outsourced | 96.08% | 5,000x | Play at Winlandia |
| 2. | Mysterious | 95.50% | 9,648x | Play at Coral |
| 3. | Gems Infinity Reels | 96.26% | 2,267x | Play at PlayOJO |
| 4. | Om Nom | 96.28% | 4,800x | Play at Party Casino |
| 5. | Power of Gods: Valhalla | 96.23% | 2,145x | Play at Thor Slots |
| 6. | Donuts | 96.54% | 20,000x | Play at Swift Casino |
| 7. | Joker Troupe | 96.68% | 25,367x | Play at Ahti Games |
| 8. | Jackpot Builders | 96.59% | 250x | Play at Play Jango |
| 9. | Folsom Prison | 94.01% | 75,000x | Play at Casimba |
| 10. | Boo | 96.54% | 47,050x | Play at Betrino |
Outsourced takes you to the dangerous world of kid's toys, or at least the dangerous manufacturing part. The reels are filled with tat you wouldn't even find in Poundland.
The game is full of different kinds of free spins features, such as Sweatshop Spins, Sweatiershop Spins, Print Spins, Printier Spins and so on. And then the spins themselves have their own special mechanics on top of that.
Outsourced is a NoLimit City slot through and through. The game's volatility is high, the theme is crude, and the game is packed with every special mechanic known to man.
| Provider | NoLimit City |
|---|---|
| RTP | 96.08% |
| Max Win | 5,000x |
| Released | 2024 |
| Features | xNudge, xWays, Free Spins, Multipliers |
Mysterious is a ghost-themed game set in the Victorian era. Pragmatic Play did a great job with the visuals, and the theme feels on point.
At the start of any round, the game can change by introducing a new ghost. The Lord, The Lady and The Baron all change how the game plays out by adding their own twist.
The Lord is all about multipliers, The Lady expands symbols to fill the reels and The Baron can infect other symbols and turn them into wilds.
| Provider | Pragmatic Play |
|---|---|
| RTP | 95.50% |
| Max Win | 9,648x |
| Released | 2020 |
| Features | Free Spins, Random Multipliers, Random Wilds, Locking Multipliers, |
Gems is one of Reel Play's Infinity Reels slots. This feature means that even though you have only four reels visible, you can get wins that are, at least in theory, infinitely long.
Whenever you get a win with a winning symbol on the rightmost reel, the reels nudge to the left and reveal a set of new symbols. If there is a new winning symbol on the right, it happens again and again.
There are also extra multipliers, which increase every time a new reel is added, or a Wild Princess is fully visible on the reels. Oh, and don't forget that you can double the number of playfields during the free spins.
| Provider | Reel Play |
|---|---|
| RTP | 96.26% |
| Max Win | 2,267x |
| Released | 2021 |
| Features | Free Spins, Infinity Reels, Multipliers |
Hacksaw Gaming's Om Nom is one of the cutest slots out there. It's all about junk food, and you are served quite a handful. Be careful not to get too stuffed.
Om Nom is part of their POCKETZ series, meaning the game is made for mobile devices and is best played on the go. The features are simple and do not require a mouse.
So, what is there then? You get two main features, free spins and mystery multipliers. At the start of every round, one symbol is picked for a special multiplier that can be up to 100x.
| Provider | Hacksaw Gaming |
|---|---|
| RTP | 96.28% |
| Max Win | 4,800x |
| Released | 2019 |
| Features | Free Spins, Multipliers |
Join the Vikings as they revel in their riches in the halls of Valhalla. This multi-tiered jackpot slot is a simple, yet intriguing game from Wazdan.
When you play the slot, you may notice that there aren't that many special features. This is by design, as all the focus is on the Hold the Jackpot bonus game.
If you get 6 or more gold coins on the reels, the feature activates. All the other symbols are removed, and you get three re-spins. Every new coin will reset those re-spins, and you play until you fill the grid or run out of spins.
| Provider | Wazdan |
|---|---|
| RTP | 96.23% |
| Max Win | 2,145x |
| Released | 2022 |
| Features | Bonus Game, Hold and Win |
Donuts is one of Big Time Gaming's classics. This game was released all the way back in 2018 but it manages to hold on to a top position even after all these years.
What makes this game so delicious is the free spin mode. You start by increasing your multiplier, and then you play the spins. The bonus spins are re-triggerable without any limits, so the wins can rise more than doughnut batter in summer.
If you ever thought that 4-reel slots can't have high volatility and big maximum payouts, then you need to try Donuts.
| Provider | Big Time Gaming |
|---|---|
| RTP | 96.54% |
| Max Win | 20,000x |
| Released | 2018 |
| Features | Free Spins, Random Multipliers, Random Symbols |
Joker Troupe is a high-volatility slot from Push Gaming. Even though the game may look simple, it can quickly escalate to a whole new level.
The game is all about those titular Jokers. They are scatter symbols, and each will trigger their own free spins feature. Every colour is different, and everyone's got their own favourite.
The Red Joker is all about hyperspins, which count time instead of a fixed number of spins. The Blue Joker stacks new rows one on top of another. And the Green Joker has a Wheel of Fortune bonus game.
| Provider | Push Gaming |
|---|---|
| RTP | 96.68% |
| Max Win | 25,367x |
| Released | 2019 |
| Features | Free Spins, Bonus Wheel, Expanding Reels |
Wazdan has made several popular 4-reel slot machines, and Jackpot Builders is one of them. Jackpot Builders is an older slot, which is quite easy to see by looking at the game. However, there is a reason why we, and many players, still love it to this day.
It's a bit strange to have the name Jackpot in the title and have such a small maximum win, but that's not the full story.
Jackpot Builders is one of the few good 4-reel cascading slot machines. With every winning combination, those symbols get removed, and new ones fall in to create more wins. This feature is common in bigger games, but not in 4-reelers.
| Provider | Wazdan |
|---|---|
| RTP | 96.59% |
| Max Win | 250x |
| Released | 2017 |
| Features | Cascading Wins, Multiplier Wild, Free Spins |
Folsom Prison may be a bit of a stretch when we are talking about 4-reel slots, but hear me out. The game does start with only 4 reels and 16 paylines available to the player.
As this is a NoLimit City slot, you might have already guessed where I'm going with this. If you get a wild, scatter, xSplit or xWays next to a closed cell, you unlock it and increase the size of your playfield.
The game is filled with features, bonus games, special symbols and everything you'd expect from a NoLimit slot. Just looking at the maximum payout tells you that this is no ordinary 4-reeler.
| Provider | NoLimit City |
|---|---|
| RTP | 94.01% |
| Max Win | 75,000x |
| Released | 2022 |
| Features | xSplit, xWays, Free Spins, Guaranteed Wilds, Expanding Playfield, Multipliers |
Boo is a slot from Big Time Gaming, and it's filled with scary ghosts. Well, cartoony ghosts, at least.
The game revolves around the cascade mechanic, and you can potentially get an endless cycle of wins. As old winning symbols are removed, new ones fill the spots and create new reactions.
Where the real magic happens is the free spins. Get three or more scatter pumpkins, and you start the free spins. During the free spins, there are persistent multipliers, and if a ghost happens to hit that square, the multiplier shines through the phantasm.
| Provider | Big Time Gaming |
|---|---|
| RTP | 96.54% |
| Max Win | 47,050x |
| Released | 2024 |
| Features | Cascading Reels, Multiplier Wilds, Free Spins |
There has been a huge increase in the number of 4 reel slots in recent years, and also in the number of 4 reel slot sites in the UK. With more slots with four reels there are, the more sites are going to have them.
Back in the day, these slots were hard to find. Now, every one of the top online slot sites will have a good amount of 4-reelers waiting for you.
The 4 reel slot sites in the UK are listed below:
A 4 reel slot is a slot machine that has four reels of symbols. The reels spin and stop at random positions creating combinations that may lead to a payout.
Slots with 4 reels are somewhat rare, with the most common sizes being 3 and 5 reels. In recent years, the number of 4-reelers has gone up significantly.
4 reel slot machines often have mechanical designs that mix both smaller and larger games. They can usually have major bonus features, but at the same time have higher RTP values similar to 3-reelers.
4 reel slots work by spinning four reels with symbols to create combinations on paylines. If you get the right symbols, you win according to your bet.
Slots with four reels are considered small, however, there are smaller games out there. When a slot has fewer reels, the payouts happen more often but are not as big. This is also reflected in the slot's volatility.
While most 4 reel slots operate just like any other online slots machines, there are games that change the formula. The smallest grid-based games have a 4x4 field, which is basically four reels.
There are a few ways you can play 4 reel slots for free. The first is to get free spins, which are real money bonuses, and the second is to try the games in demo mode.
Free spins are a bonus offer online casinos have that are in place to entice players to try out the casino. You can check our list the free online slot spins, which shows you all the casinos that offer these bonuses.
The second way to play for free is to join a casino and play in the demo mode. Age verification is mandatory, but you get to familiarise yourself with the games this way. It's good to try out a game first before playing it with real money.
Four reel slots are filled with special features and different bonus mechanics. Because the games are physically larger, the potential for unique features grows.
Although the games are very different, they share some similarities. The RTP values of four reel slot machines are generally high compared to other reel configurations.
Some of the more popular special features you find in 4-reel slots include:
You have a good amount of choice when picking a 4-reel slot. Here are some of the popular types of slots that have 4 reels:
Fruit slot machines are one of the oldest types of games and ones that can easily be found among 4-reel slots.
These games are often very simple in nature and easy to learn. They don't have many special features, and most just have wilds, and nothing more.
Progressive jackpots are a rare feature on 4-reel slot machines, but there are some growing pots out there. When you look at the list of progressive slots UK has, most of them are 5-reelers.
In the 4-reel category, you often see Vegas-style slots with small progressive pots. However, some smaller game providers have made modern progressive slots, like Alien Fun 41 and Bloody Stakes.
Penny slots are online slots with very small bets, generally just 1p per payline. These have become rarer from their heyday, and finding 4-reel penny slots may not be easy.
You can check our list of penny slots online that shows you which games you can play with low wagers. There are a lot of 3 and 5-reeler, and only a few 4-reel slots.
Modern style 4 reel slots are the most common type of game you will find. These include 3D video slots, as well as all other games with modern visual design.
4-reelers have always been more akin to online video slots, which are the prominent type of game you find in casinos. These have stunning visuals, modern features and plenty of special mechanics.
Special multipliers are common in 4 reel slots. These can vary from simple wilds with multipliers all the way to multipliers that keep growing with every win.
However, as 4-reelers are often a bit more tame than their larger cousins, the multipliers are also a tad less volatile.
Just like with fruit machines, classic online slots with 4 reel are not the most common type, but you can find them.
These games follow the designs and visual styles of old slot machines while transferring them to the 21st century. The games may have fewer features, but they make up for that in style and atmosphere.
There are numerous game providers that create 4 reel slot machines in the UK. Even though they are not as common as 5-reelers, you have a lot of options when it comes to suppliers and different kinds of slots.
Check out the following game providers for 4 reel online slots:
NoLimit City is known for the extremely volatile slots that go beyond anything others are releasing. The games feel very unique and are easily recognisable.
It has been great to see how NoLimit City slots UK are getting more variety. Their experiments with different reel combinations and sizes have definitely yielded fruit.
Wazdan is a provider with a versatile game library. They have done it all and tried everything, so it's not a surprise that they have 4 reel slots in their game library as well.
It is also easy to find Wazdan casinos, as surprisingly many casinos have picked their games. You have a lot of options when it comes to where to play and what to play.
Big Time Gaming hit it big time, pun intended, when they created the Megaways mechanic. These games are one of the most popular slots there are.
However, there is more to this developer than just those games. You can find some amazing Big Time Gaming slots in UK casinos that satiate your hunger for variety
Every slot category has its own strengths and weaknesses. Some games are better for one type of player, while others enjoy the complete opposite.
These are the pros and cons of 4 reel slots:
Generally high RTPs
Providers can be creative with the mechanics
The number of games is growing exponentially
Fewer jackpot slots
Older 4-reelers are a bit boring
Smaller maximum payouts
In the UK, there are slots of different sizes available. While 4 reel slots have their own unique feel, you can try other slot games as well to see if they are more up your alley.
Here are some alternative slot games.
When you think of 3 reel slots, the first thing that comes to mind is probably fruit machines and Vegas-style slots. However, in online casinos, that is not the whole story.
There are a lot of amazing modern online slots that have 3 reels and wild features. This is a design space that providers have just started to crack.
Slots with 6 reels are quite common, especially due to one specific game mechanic. Most Megaways slots have 6 reels, and they are extremely popular games.
Now, there are other 6-reelers out there for you to play, but it is obvious which games rule this category.
8 reel slots are a bit more rare, especially if you are looking for classical slots. There are tons of cluster slots that have eight columns of symbols, but not many traditional slot machines with so many reels.
However, those that have all eight reels are filled with volatile payouts that can get out of hand quickly.
