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How we evaluate online slots
Our team here at Gamble have a great deal of experience. We’ve in the gambling industry for more than 10 years now, so we know just what to look for in the best slots sites. Our experts follow a strict set of guidelines when reviewing online casinos and slots. So that they can bring you the newest and greatest slot games on the UK market.
When reviewing an online slots game, our reviewers take the following into account:
- Theme and Design: How a game looks and feels is definitely one of the most important factors when determining the quality of a slot machines. A good slot game should run smoothly and have a fun theme which makes the game entertaining.
- RTP: This stands for Return To Player, and basically tells you how much the machine pays out for every pound that is wagered on the game. We cover much more about this later in the article. Obviously, the higher the RTP, the better it is for the player.
- Features: Does the game have bonus features, or a free spins mode? Does it have wild- and scatter-symbols? These are the things that make a slots game really stand out from the crowd.
- Originality: There are thousands of slots available online. But many of them are just the same, only with slight variations. We try to find slot machines that are unique in terms of themes and features – games that you remember and want to play again!
Once they have looked at all these aspects, our reviewers can bring you the very best slots games that the UK has to offer, from the top online casino operators.
With thousands of slot machine games coming onto the market all the time, it can be overwhelming trying to choose the best ones to play. Luckily, because our experts know exactly what to look for, they do the hard work for you. So, let us go through and review all the top slots from all over the UK, so that you don’t have to.
What is a slot machine
The word ‘slot’ refers to the action of inserting a coin into a machine, and the name ‘slot machine’ is used all over the world to describe all slots games. Other names include fruit machines (named for the typical symbols on the reels), fruities, pokies and one-armed-bandits.
The history of slot machines goes back to 1891. The first known ‘gambling machine’ was invented by Sittman and Pitt in Brooklyn, New York. Effectively, it was a poker machine, where players would insert a nickel and try to get a winning poker hand. It proved to be incredibly popular, but the odds were hugely in favour of the machine, with some cards being removed in order to reduce a player’s chances of winning. The machine also wasn’t capable of paying out cash, so players would get rewarded in free drinks and cigars.
It was this machine that gave way to the Liberty Bell, which is widely regarded as being the first real slot machine. This machine used 3 reels with symbols, rather than playing cards, and the idea was to match the symbols to win a prize. This is still the premise that is used today, and although slots have come a long way, they still follow the same pattern as the Liberty Bell.
Modern-day internet slots don’t require you to insert your cash directly into a machine. And with software developers making new and exciting games every month, the possibilities are now endless. But we can still look back and thank the Liberty Bell and Sittman and Pitt’s gambling machine for the slot games we all know and love today.
RTP (Return to player) for slots explained
Return to player (RTP) refers to the amount of money a casino operator expects you to get back over a period of time when playing one game. This number is worked out as a percentage. So, for example, if a games says it has an RTP of 50%, this means you’re expected to get back 50p of each pound that you spend on the game. Luckily, slots RTP is much higher than 50%! In fact, some slots have an RTP of over 99%, so you have a much better chance of winning your money back.
Here at Gamble.xyz, we’re dedicated to bringing you the best games from the best online casinos. So always check our lists of trusted and reviewed sites, including where is offering the highest RTP slots in the country.
High RTP slots are not only great fun, but they also give you a better chance to get your money back over time. So where can you find these RTP slots games? Right here, of course.
Without further ado, let’s get into the best payout slots in the UK that you can find today.
Top 10 online slots in 2021 by RTP
So now you know all about RTP and how our experts find the best slots online. From the best casino operators to elite software providers, our experts have carefully compiled this top 10 list of the greatest slot games online that you can play in 2021.
From classic 3 reel fruit machines, to complex slots with masses of bonus functions and paylines, we’ve gone through them all. So let’s have a look at our top 10 selection of the most awesome slots with the very best RTP available to play now:
- Goblin’s Cave
- Ugga Bugga
- Mega Joker
- Jackpot 6000
- Uncharted Seas
- Blood Suckers
- Kings of Chicago
- Couch Potato
- Golden Colts
- Cluedo Spinning Detectives
Goblin’s Cave (Playtech) – RTP 99.32%
This fun slots game from Playtech has a whopping 99.32% RTP, so you know that you have a great chance to get back your money, and more! Goblin’s Cave is a dynamic, 3 reel slot game that’s easy to play. Dive into the goblin’s mysterious cave and try to snatch as much treasure as you can!
Cool features Of Goblin’s Cave:
- Amazing graphics
- Extra bonus rounds
- Ability to ‘hold’ reels for more fun and chances to win
Ugga Bugga (Playtech) – RTP 99.07%
Another classic from the masters at Playtech. Ugga Bugga is an adrenaline-fuelled jungle adventure. This 5 reel game creates multiple paylines and chances to win. And with great visuals and exciting music, it’s no wonder that Ugga Bugga is a firm favourite with slots lovers all across the UK.
Cool features of Ugga Bugga:
- Incredible RTP
- Multiplier of up to x1000
- Fun jungle-themed symbols and graphics
Mega Joker (Netent) – RTP 99%
A classic fruit machine-style game. Mega Joker gives you those Las Vegas vibes, as you take on this traditional slots game. With a massive RTP and multiple paylines, this traditional ‘fruity’ is more sophisticated than the typical machine you’d find at your local pub!
Cool features of Mega Joker:
- Fun, classic fruit machine layout
- Progressive jackpot
- Supermeter features with even more chances to win
Jackpot 6000 (Netent) – RTP 98.8%
Another fruit machine game, with a Vegas twist. Jackpot 6000 gives you loads of chances to win on this sleek but classic looking game. With bright symbols and great sound effects, you can have tons of fun on this 3 reel traditional slot machine game.
Cool features of Jackpot 6000:
- Amazing graphics
- Supermeter mode
- Heads or Tails feature with a 50/50 chance to win
Uncharted Seas (Thunderkick) – 98.5%
Step into the boots of Christopher Columbus now, and set sail across uncharted waters in this fun and exciting game. With its olde-world layout of ancient maps and symbols, you’ll feel like you’re on a real treasure hunt! Beat the sea creatures for your chance to win big on this high RTP low volatility slot game.
Cool features of Uncharted Seas:
- A massive 25 paylines
- Free spins
- Fun poker chip feature for more chances to win
Blood Suckers (Netent) – RTP 98%
This cool vampire themed game takes all the elements from the popular vampire and werewolf films and programs that are popular right now and puts them all into one place. Sexy nocturnal beings roam around this Victorian wonderland. And the game’s graphics are a mix between fine art paintings and animation. So much fun!
Cool features of Blood Suckers:
- 5 reels with 25 paylines
- High RTP and low volatility
- Free spins, scatter wins and vampire-slaying bonus round
Kings of Chicago (Netent) – RTP 97.8%
A unique game that combines gangsters, slots and poker! Kings of Chicago is a one-of-a-kind slot game where you’ll feel like a Mafia kingpin, controlling the streets of the Windy City with your tommy gun and flapper girl on your arm. With it’s black and white interface and fun themed symbols, it’s not hard to see why this game is so popular.
Cool features of Kings of Chicago:
- Playing cards replace classic slots symbols
- Joker card acts as wild multiplier for more chances to win
- Graphics and attention to detail are incredible
Couch Potato (Microgaming) – 97.43%
Back to basics now, with this classic 3 reel slot game. If you like your games fun and straightforward, then Couch Potato is the game for you! Classic symbols and an easy-to-use colourful interface makes Couch Potato one of the most effortless slots games to play.
Cool features of Couch Potato:
- Easy to play but very versatile
- Fun graphics and layout
- Classic format with lots of chances to win
Golden Colts (Play’n Go) – RTP 96.55%
Step back into the Wild West now, and feel like Clint Eastwood with this fun gun-slinging game. Golden Colts brings you stunning visuals and graphics. Wild, desolate stretches of American countryside make this game look like a classic Western film. And you can walk through the landscape feeling like the new Sheriff!
Cool features of Golden Colts:
- A mammoth 40 paylines
- Golden Colts bonus round for even more chances to win
- Amazing graphics and mobile-optimised gameplay
Cluedo Spinning Detectives (SG Interactive) – RTP 96%
We all remember the classic board game of Cluedo. And now you can be Professor Plum or Miss Scarlet on this fun and exciting slot game! The classic mansion serves as the backdrop to the game. And the symbols are a combo of the classic murder weapons we all know and love from the original board game. Set during the night, you really get the feel that you’re walking around the creep mansion looking for a murderer!
Cool features of Cluedo Spinning Detectives:
- 5 reels and a huge 40 paylines
- 5 different bonus rounds
- Unlock free spins bonus
Important when choosing an online slots casino
Playing online casino slots is a fun way to have a little flutter. There are loads of amazing new slots with incredible graphics and ingenious gameplay on the market right now. So it’s fair to say that there’s something out there for everybody. However, with such a huge selection of games comes the question of where to play.
You should take a number of things into consideration when playing slots online.
- Game selection: a big game choice can make it hard to decide where to play, but by the same token, it’s still important that there are plenty of games on offer. Not only does a wide variety mean more entertainment for the customers, but also that many different software companies are happy to be in partnership with the casino. This is a good indicator that they have a solid reputation in the industry
- Licensing: if you’re playing slot sites UK, then you should check that the site has a valid UKGC licence. It’s a legal requirement for any casino operator offering their games to players in the UK. Keeping yourself safe when playing online is super important
- Payment options: top slot sites will have lots of ways for you to make deposits and withdrawals. It can be really frustrating when you find a site you like after doing all your research only to discover that they don’t accept your preferred payment method
- Customer service: always look out for simple and clear lines of communication between you and the casino. There may be a technical hiccup along the way and you’ll need to contact them quickly to resolve any problems.
Featured slots game providers
Online gaming has seen many smaller casinos come and go over the years and the same can be said for software providers. It’s a tough industry to break into for anybody. Competition is fierce and those without a watertight business model fall by the wayside.
Today, the industry finds itself in an interesting moment where there’s a huge opportunity for growth. There are several big names that have made it all the way since casinos first went online 25 years ago and also some smaller independent studios who are proving that there’s still room for newcomers.
For more than two decades, NetEnt has been providing some of the most popular slots to casino sites across the globe. They focus on engaging games with incredible graphics and gameplay to create an immersive experience, which is much more than simply gambling. Starburst has been one of their most popular titles along with Gonzo’s Quest. The arrival of their new ‘Rome – The Golden Age’ slot is eagerly anticipated this year.
Playtech is one of the biggest software providers in the online gambling industry. They claim to be the largest casino software provider listed on the London Stock Exchange, which does go to show that they are certainly a force to be reckoned with in this arena. Their games have been entertaining the masses since the turn of the century, and they have grown in strength and statute during that time. Titles such as Age of The Gods and Batman Begins were both from this studio.
Microgaming has been around since the idea of online gambling was first thought up. They created their famous Gaming Club, which many believe to be the first online casino, in the mid-90s. Over the last 20 years, they have designed some hugely successful slots. They have constantly pushed the boundaries over the years, and are at the cutting edge of many new introductions to the sector. Back in 2006, they brought out their incredibly popular Mega Moolah progressive slot that has gradually turned into an entire range of machines all linked together to bring punters some of the biggest jackpots imaginable.
The Novomatic brand started out life in the early 80s as a physical slot machine manufacturer. Their products can be found all over the world and some say that they are now the largest in the business. They came a little later to the online party —so to speak— when they bought Greentube Internet Entertainment Solutions about 10 years ago. They are now highly regarded in the industry and players will often seek out their games.
Play’n go’s software has worked itself into a nice little niche in the gaming world. Their Omny-Channel Magic product means that a player’s game progress can be transferred through both digital and land-based casino devices instantly. A profile system stores your data and lets you enjoy the same gaming experience wherever you are. They have also created some amazing slots including The Faces of Freya and Thunderscreech.
SG has been involved in all areas of the casino business over the years. From lotteries to slot machines, there’s not much that they haven’t done. Several smaller brands have been taken under their wing giving them the ability to have a huge influence in every aspect of the gambling world.
This small Swedish studio has built itself a good reputation for breaking away from the traditional. Where many slots follow the same pattern, Thunderkick games add their own take on how things should look. Have a few spins on their fabulous game Esqueleto Explosivo and you’ll see how they’ve done it. Not only have they created an amazing graphical display with skulls flying out of the screen rather than simply spinning reels, but they have also introduced a ton of innovative ways to multiply bonuses and enjoy different types of features.
If you need a little more info, then look no further!