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UK Rank based on 15100+ indexed slot games

Top ranked slots UK, January 2020


Video Slots. RTP: 96.09%

Starburst is one of NetEnt’s most famous slots, and it rose to stardom soon after it was launched back in 2012. It’s a timeless classic that remains as relevant and fun today, as it was when it was first released. Starburst is among the most popular slots you’ll find online, and not seldom it’s the assigned slot for free spins promos and welcome offer free spins.

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Video Slots. RTP: 96%

Bonanza Megaways is a powerful, unusual and exciting slot from Big Time Gaming. It was first released in december 2016, and you’ll see from the get-go that you’re in for a very special ride here. It’s based on the Megaways game engine, and this means you can activate up to an astonishing 117 649 paylines. This alone should tell you that this is a must try slot, but there is plenty more at offer here also.

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Book of Dead

Video Slots. RTP: 94.25%

Book of Dead was first launched back in january 2014, and it’s among the most popular slots online for UK players. Play’n Go has done a very good job creating this adventurous game. The Indiana Jones like character, Rich Wilde, goes on a mission to Egypt to uncover some ancient artefacts, just like we’ve seen him do in Pearls of India. The treasure hunt is on, and you can lead the way, and win big on this high variance slot.

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Wolf Gold

Video Slots. RTP: 96.01%

Wolf Gold is an enticing slot game by the renowned Pragmatic Play. Ever since its introduction in web-based casinos, this slot continues to strike both new and experienced gamers with unmatched graphics and diverse payout features. With a native American theme, the Wolf Gold slot machine is playable across devices. The designer welcomes all slot lovers as the betting range is quite elastic while free spins bonus is easily triggered.

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Rainbow Riches

Video Slots. RTP: 95%

Rainbow Riches is a legendary 5-reel slots game, and the first theme from the Barcrest casino game library now available to customers integrated with the Williams Interactive Remote Game Server. Featuring the classic Road to Riches Bonus where players can win up to 500 x stake by spinning their way along the road, players can also win big on the Pots of Gold Bonus or take their chances during hte Wishing Well picking bonus.

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Gonzo's Quest

Video Slots. RTP: 95.97%

Gonzo’s Quest is nothing short of a legendary video slot, and it has long since established a worldwide cult following. The game, with the charming conquistador Gonzo in the lead role, has become synonymous with NetEnt, and acts more or less as the unofficial logo and ambassador for the famous Swedish game provider.

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Twin Spin

Video Slots. RTP: 96.55%

With Twin Spin, NetEnt has combined the excitement of the classic fruit machine with a high-powered, hypermodern video slot. First launched back in December 2013, this slot remains as popular as ever. Every spin comes with two identical and adjacent reels that are linked together, hence the name Twin Spin. These twin reels can also expand and become triplet, quadruplet or even take over all 5 reels at the same time.

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Dynamite Riches

Video Slots. RTP: 95.7%

Dynamite Riches is about an old school prospector digging for nuggets in his lonesome mine, and spinning the reels we are all prospectors searching for that one strike of luck that will end all our monetary sorrows. This is why the gold digger theme never gets old, and Red Tiger has made a nice contribution to the popular genre with this game.

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Legacy of Dead

Video Slots. RTP: 94.51%

Legacy of Dead is Play’n Go’s latest addition to the ever-expanding Book series, and there are some twists and turns that make this a worthwhile release to check out. The graphics and visuals are excellent, and the soundtrack sets the mood for a deep dive into the egyptian burial chambers for yet another treasure hunt.

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Mustang Gold

Video Slots. RTP: 96.53%

Mustang Gold takes you right into the American countryside, and you’ll join a cowboy and cowgirl and their two respective horses. This is a medium to high volatile game, and you can win up to 12,000 times your stake here. The game centers around a Money Collect bonus feature, and this feature can be triggered both in the base game and during the free spins feature.

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Lightning Roulette

Live Casino. RTP: 97.3%

Our unique Lightning Roulette is like no other Roulette game. Not only is it visually stunning, it also adds high-payout RNG Lucky Number wins to every game round. All the familiar elements of our world-class Live Roulette are here — the live wheel, the live dealer, the full line-up of Roulette bets. But Lightning Roulette adds a whole lot more for an electrifying player experience and extra chances to win. In each game round, between one and five Lucky Numbers are struck by lightning and given multiplied payouts of between 50x and 500x. With its involving game show-style environment with advanced sound and lighting effects, Lightning Roulette is unique and electrifying spin on traditional Roulette.

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Mega Moolah

Video Slots. RTP: 88.12%

Mega Moolah is a five-reel and 25-payline slot game created by Microgaming – a popular designer of casino games and software developer for online casino games. It serves as a fine option for both people who are new to the world of slots as well as experienced gamblers who’re looking to bag the big bucks. The minimum coin bet you can place on a single payline is 1p, while the maximum is 5p. This progressive penny slot allows players to wager a maximum of 125 coins per spin.

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Rainbow Jackpots

Video Slots. RTP: 95.24%

While the theme is somewhat worn, Rainbow Jackpots slot from Red Tiger is still a nice contribution to the irish luck genre (which never really gets old anyway). The game features a fun beer tapping bonus game where you can win the game’s max win of 1,000x your stake, and you also find a free spins feature with up to 100 spins here.

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Fishin' Frenzy Megaways

Video Slots. RTP: 95.02%

Fishin' Frenzy is a beefed-up Megaways version of the original classic fishing trip slot, and it was released by Blueprint Gaming 23 April 2019. The graphics are still simple and cartoon-like, but a 6th reel has been added, as well as up to 15,625 paylines. The free spins feature is more or less the same, but you can now win up to 100,000 coins. This is a highly volatile game, and if you liked the original there is no reason you will not enjoy this boosted version also.

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Fishin' Frenzy

Video Slots. RTP: 96.12%

Fishin’ Frenzy slot is a very simple and fun game that anyone who’s ever gone fishing can relate to. It was released back in September 2014 by a game provider called Reel Time Gaming. Of course, Blueprint Gaming has made a MegaWays version of Fishin’ Frenzy that was launched in April 2019. Still, many people prefer the simplicity and charm of the original game.

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Immortal Romance

Video Slots. RTP: 96.86%

Immortal Romance is one of Microgaming's most successful slots ever, and even though it was first released back in 2011, it’s still among the most popular games in the casinos for UK players. The combination of romance and vampirism has just grown in popularity since this game first came out, and this can probably explain some of Immortal Romance’s broad appeal.

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Who Wants To Be A Millionaire Megaways

Video Slots. RTP: 96.24%

Who Wants to be a Millionaire Megaways is Big Time Gaming’s first branded slot, and - of course - it’s based on the world famous TV game show by the same name. It runs on the Megaways engine, and every win benefits from the Avalanche feature to give you more winning chances. If you ever wanted a shot at becoming a millionaire on the show, this is your big chance right here!

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Wish Upon A Leprechaun Megaways

Video Slots. RTP: 95.5%

Wish Upon a Leprechaun Megaways comes with a staggering 50,000x your stake potential, which is even more impressive since the max win is not capped in any way. This means that the unlimited progressive multiplier you benefit from during the free spins feature can really land you some insane payouts here.

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Age of the Gods God of Storms

Video Slots. RTP: 96.14%

Video Slot 'Age of the Gods God of Storms' from the software provider Playtech is a 5*3 game with 25 betways. Slot has RTP=96.14% and MED? level variance. Main game features are: Wild, Expandind wild with re-spin, Multiplier, Jackpot, Respins.

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Dragons Luck

Video Slots. RTP: 96.29%

Dragon’s Luck is yet another asian themed slot from Red Tiger, and it’s based around the lucky number 138, which in China is considered as almost sacred. The 138 coin is the symbol that can land you the game’s max win of 1,380 times your stake, but you will need to fill the screen with that symbol to make it happen.

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Eye of Horus Megaways

Video Slots. RTP: 95.02%

Eye of Horus Megaways turns an all-time favorite game into a steroid injected version of itself, and you will benefit from up to 15,625 ways to win on this egyptian themed slot from Blueprint Gaming. This might not be as much as other megaways engine games, but what the heck, it more than enough to land you some very nice payouts.

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Buffalo Blitz

Video Slots. RTP: 95.96%

Journey to wide open plains of North America in Buffalo Blitz, a 6x4 reel video slot featuring 4096 ways to win, stacked Buffalo symbols, up to 100 Free Spins with random multipliers, and a maximum win potential of up to 10 000x your line bet.

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Diamond Mine (Blueprint)

Video Slots. RTP: 96.43%

Diamond Mine is a nicely made MegaWays slot packed with action from the first spin. It was launched by Blueprint Gaming 1st of May 2018, and it comes with 6 reels (plus a horizontal reel on top), and up to 117,649 paylines. Combined with the Avalanche feature this makes for a very interesting base game, and the free spins feature comes with a multiplier that increases per cascading win up to a max win capped at £250,000.

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Pirates Plenty The Sunken Treasure

Video Slots. RTP: 96.12%

Pirates Plenty The Sunken Treasure starts out as a 5-reel slot, but you can unlock a 6th reel by landing enough treasure map symbols. It’s very important to get this done, as you will benefit from more features and higher potential when you do. This is a great looking (and sounding) pirate game from Red Tiger, and it was released on the 15th of November 2018.

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The Best Ranked Online Slots

In this section you`ll find our always up-to-date list of the top ranked online slot machines. We provide unique and distinct lists for all different regions, and the ranking system is based on data collected from more than thousand online casinos. 

If you want to see the top 100 slot ranking for another region, all you have to do is change the language in the drop down menu in the top right corner of the page. Our ranking system is based on exposure, and by that we mean the average lobby position each slot has across all the casinos we sample.

We hope you find this information useful, and you can always click on any game to get the full details and ranking calculations. We also provide all available technical data for each slot, and you can read our full slot review and play each game for free right here at SlotCatalog.

SlotCatalog's ranking over casino slots

As previously mentioned SlotCatalog`s ranking describes slot game exposure in online casinos, by region. Simply explained we crawl over a thousand online casinos daily to see what games they expose the most. During each casino crawl, we go through all the online slots that you can play in the casino. Each online slot will get an average lobby position score. This means that:

    • Higher placement in the lobby will give a stronger score.
    • If a game is absent in a casino lobby we will give it the maximum lobby position.
    • Larger online casinos have more weight than smaller ones. The weight is calculated by the geographical strength of the online casino compared to other online casinos in the same region).

This means that our ranking method is based on an average score / lobby position for each slot game. A lower average means a better, more exposed game.
Our SlotRank metric is based on all online slots average lobby position scores, but in relative terms. This means that the game with the lowest average lobby position will get SlotRank #1. The game with the second-lowest avg score will get SlotRank #2 etc.
As new games are released daily we update our ranking each day. This way we make sure that you as a player will have the latest ranking available, including the 0-day releases.

What is a slot machine?

Online slots is a term that covers a vast and diverse array of features, themes and setups, and it`s also a field that is in constant development.  One thing all casino slots have in common is that they require no real skill to play. As long as you`re able to press the spin button, you`re basically good to go.

Slot machines (both physical and online) are operated by a Random Number Generator (RNG) that`s been certified by third party agencies for fairness and functionality. The theoretical payout potential - usually called Return to Player (RTP) - can vary significantly from game to game online, but the industry average hovers around 96%. This means that the average House edge for online slots is around 4%, and thus significantly lower than most physical slot machines.

Another thing that varies a lot for online slots is something called volatility (or variance). Even though the RTP can be very similar (or even the same) for 2 slot machines, you`ll find that some games payout seldom but big, while others payout smaller wins almost all the time. There is also a middle way here, and it`s up to each player to decide what they prefer.

Generic Slot features

There`s almost no end to the creativity of game providers when it comes to slot features. Still, some basic features tend to be included in almost every online slot out there. Here we shall briefly explain these generic slot features for you.

Tells you everything you need to know about winning symbols, and the payout for each combination.

Bet Limit and Paylines
All slots have a minimum and a maximum limit for how much you can bet, but this limit can vary somewhat between each game. Usually, the limits are both low and high enough to suit most players, though. 

The number of paylines will vary between 1 and all the way up to several hundred thousand (in rare cases). Usually, there will be between 1 and 100 paylines (or ways to win as it`s sometimes called), but there are many exceptions out there too.

Wilds, Scatters and Multipliers
Almost all online slots come with a wild symbol and a scatter symbol. The wild symbol will act as any symbol (except the scatter) to maximize your winnings. The wild can come in many forms and combinations, including stacked wilds and sticky wilds (which are the most common).

A certain number of scatters (normally at least 3) randomly spread across the reels will trigger the free spins feature on most slots. A multiplier will boost your winnings by a factor of at least 2x, and can sometimes be combined with wilds.

Free spins and bonus games
The number of free spins you get will usually be tied to how many scatters you land, and sometimes you can get additional free spins by landing more scatters. Many slots also come with bonus games that can take many forms. However, some sort of click-and-pick game is common.

Video Slots

Video slots are by far the most common type of slot machines you`ll find in online casinos. They have at least 5 reels (sometimes more), and are characterized by sophisticated graphics, sound effects and sometimes 3D intros of almost cinematic quality. There are simpler video slots also, but usually they come packed with innovative bonus features and exciting special effects.

Classic Slots

Classic casino slots have 3 reels, and they are usually a lot simpler in all possible ways than the video slots. Many times classic slots will resemble - or be exact replicas - of physical fruit machines or one-armed bandits. They have a nostalgic appeal for many, but some also just prefer the simplicity the Classic slots offer.


Play Free Slots And Casino Games For Fun

Sometimes you don`t feel like risking real money to play slots or other casino games. That`s not a problem. At SlotCatalog you can enjoy a moment of joy and excitement by playing the casino games, for fun. We have the largest database of Slot Games and most of them are available in demo mode here at our site. This means you can try as many as you like, for as long as you like, without betting a cent.

No registration or download is required to play the games for free. But, some of the older games need Flash software to run.

Here is how you play a game for free on SlotCatalog:

  1. Pick the game you would like to in the list, or search for the game name or providers name in the search box up top.

  2. On the game page itself, click the button “Play for Free on SlotCatalog”

  3. Load and start the demo-game by clicking the green “Play For Free” button.

  4. Voila! The game starts and you can start spinning!

If you encounter any problem or questions regarding the play for fun functionality we recommend that you read our FAQ below. If you can`t find the answer there make sure to send us an email.

SlotCatalogs Play For Free FAQ

Different casino game types available for free at SlotCatalog

As you`ve probably guessed by the name of our company, our focus is Slots. That is by far the most common game type in our free to play arsenal as well. We have several other categories of casino games, although not as popular. The data below (11 September 2019) describes the amount of games for each game type and how many of these that are available as a demo on SlotCatalog.

Video Slots - About 10.000 of our 14.000 slots are available in demo mode.

Classic Slots - 220 out of our 240 classic slots can be played for free.

Card Games - More than 500 of our 650 card games is playable for fun.

Scratch Cards - Play 170 of 220 scratch card games for fun.

Roulette - We have demo functionality for 120 of the 200 roulette games in our database.

Other Types - 30 out of our 400 games in this category is accessable in free to play mode.

Dice - More than 20 dice games is playable in demo mode. Our database consists of 30 dice games in total.

Live Casino - Only 3 out of the 250 live casino games can be played for free.

As you can see you will find Roulette, Blackjack, Video Poker, Baccarat, Bingo and Slingo in our arsenal of demo games. If you`re looking to sort these games by one of these categories you click on “By Type” in our main menu.

Restrictions on free to play games in some countries

Most countries allow casino games in demo mode, as long as the visitor is above the legal age of gambling in that country (usually 18+). But due to legislation`s and regulations, some countries do not allow this, without certain requirements.

A proper age verification check is required to provide this service in the United Kingdom. This is why our free to play games are temporarily disabled for UK visitors. We`re working on a solution for this which is expected to role out during 2019.

Game providers with demo games at SlotCatalog

At SlotCatalog we have 290 game providers in our database. These include some of the super popular game providers like:

  • NetEnt
  • Play`n Go
  • Red Tiger
  • Playtech
  • Blueprint
  • Microgaming
  • Big Time Gaming (BTG)
  • IGT
  • Yggdrasil
  • Merkur
  • Novomatic
  • Nektan

It`s not only the well known, already established high-end game providers that are available to play for fun here at SlotCatalog. We put a lot of effort to add the demo games of the lesser-known, new studios but with just as high-quality games like:

  • All41 Studios
  • Rabcat
  • Just For The Win (JFTW)
  • Triple Edge Studios

And many more...

Technical requirements for playing the demo games

Although a lot of work has been done to phase out Flash from the web there are still older games that use this outdated technology. To play these titles your need Flash installed at your computer. Some of the new browsers (like Chrome) also requires you as a user to give permission to the site that wants to run a Flash application.

Enough about the older titles. The new games are released in HTML5 format which doesn`t require anything from you as a visitor, except a web browser. However, we recommend you to update your browser to one of the recent releases to avoid any problems.

Mobile Compatibility

Thanks to the HTML5 standard, the new casino games are playable in demo mode on your mobile devices. Without prerequisites or limitations by screen size etc.

With that said it`s not impossible to play the Flash demo games from your iOS or Android device. However, it would require you to install Flash on that device as well as a browser that supports it.

Free to play game availability at SlotCatalog

As previously mentioned we have about 14.000 casino games listed in our database. About 10.000 of them are available to play for fun here at our site.

Our content team works hard at acquiring demo games for all new releases that we add to our database. We do the same effort if the game provider is a highly established one or one of the new challenging ones. Our vision is that all games should be available for free here at SlotCatalog.

Moving over to real money

If you`ve decided that you would prefer to play the games for real money instead, you`ve come to the right place. Why? Because we guide you to popular casinos for your country. Popularity (measured by estimated traffic) is a good indicator that the casino is safe. In addition to this, we have reviews to cover most of the operators listed at our site.

That`s not all. SlotCatalog also makes sure you have the tools to find the right casino according to your preferences. You can compare welcome bonuses and properly verify that the casino in question has your favourite game providers or slot titles in their catalogue.

There are several ways to go about it when looking for the right casino for you. Either you search by bonuses, check out our casino page or if one slot game title is the most crucial to you, just search for it in our search box.

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