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UK Rank based on 11400+ indexed slot games

Top ranked slots UK, April 2019

Starburst

Video Slot. RTP: 96.1%

Let yourself be mesmerised by the sparkling jewels of Starburst™. With 5-reels, 3-rows, Win Both Ways and the expanding Starburst™ Wild, you are bound to be dazzled!

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Book of Dead

Video Slot. RTP: 96.21%

Let’s get it out of the way at the get go – this can easily be construed as a ripoff of the Book Of Ra, one of the most played land based casino slot games of all time and we are sure experienced players will be shouting that from ringside.

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Bonanza

Video Slot. RTP: 96%

Big Time Gaming release the next chapter in reactive slot games with Bonanza a highly charged wild west mining adventure with fast game play and amazing 3D graphics.

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Gonzo's Quest

Video Slot. RTP: 96%

Gonzo’s Quest™, NetEnt’s first platinum video slot game, is designed to entertain both new and seasoned players alike. The game begins with a short film featuring Gonzo the conquistador.

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Scudamore's Super Stakes

Video Slot. RTP: 96.99%

Scudamore’s Super Stakes is a horse racing slot featuring Scudamore himself as a race commentator. This branded game was released by NetEnt 7 March 2019, and the main attraction is undoubtedly the Horse Race bonus feature where you get to pick your horse and race against 3 others. This is a highly volatile game, and you can win up to 5000 times your stake here.

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Wild Worlds

Video Slot. RTP: 96.47%

Wild Worlds is superhero slot with both Avalanche feature and Cluster Pays engine, and it was launched by NetEnt 9 april 2019. It comes with 5x5 reel setup, and you can bet as high as £400 on this slot. The free spins feature is the big attraction, and it comes with 3 different worlds and plenty of monsters you need to defeat. You can win up to 2500x your stake on this medium variance game.

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Pirates Plenty The Sunken Treasure

Video Slot. RTP: 96.12%

Video Slot 'Pirates Plenty The Sunken Treasure' from the software provider Red Tiger is a 5*3 game with 20 betways. Slot has RTP=96.12% and HIGH level variance. Main game features are: Wild, FreeSpins, Expanding Symbols, Multiplier, Symbols collection (Energy), Respins, Scatter symbols, Features Map, Avalanche.

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Who Wants To Be A Millionaire Megaways

Video Slot. RTP: 96.24%

Video Slot 'Who Wants To Be A Millionaireegaways (Big Time Gaming)' from the software provider Big Time Gaming is a 6*5 gameSlot has RTP=96.24% and HIGH level variance. Main game features are: FreeSpins, Bonus Game, Respins, Scatter symbols, FreeSpins Multiplier, Stack, Gamble.

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Temple of Nudges

Video Slot. RTP: 96.03%

Temple of Nudges is a simple and fun slot from NetEnt, and it was launched 21 march 2019. It comes with 5 reels, 3 rows and 243 paylines, and you can play across all platforms. The theme is inspired by Aztec culture, and the main features are random re-spins and a nudge on every consecutive win. This is a medium to high variance game, and you can win up to 2,187 times your stake.

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Immortal Romance

Video Slot. RTP: 96.86%

Not unlike the mighty popular Twilight series, Immortal Romance is a dark and mysterious tale of romance and intrigue. Featuring 4 charismatic supernatural vampires - Amber, Michael, Sara and Troy - this is a slot that will literally haunt you in your dreams. The soundtrack sets the mood perfectly, and once you’ve tasted this game once, you’ll came back for more again and again.

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Mega Moolah

Video Slot. 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 Riches

Video Slot. 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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Phoenix Reborn

Video Slot. RTP: 96.5%

Phoenix Reborn is an Aztec themed slot from Play’n Go, and it was launched across all casinos 16 April 2019. It comes with 5 reels, 6 rows and 40 ways to win, and all throughout the game you’ll benefit from the expanding Phoenix wild feature. The free spins feature is the main attraction though, and it comes with a guaranteed expanding wild and a chance to win up to 500,000 coins. As you might suspect, this is a highly volatile slot with a high potential.

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Twin Spin

Video Slot. RTP: 96.6%

Twin Spin™ pairs old-style Las Vegas excitement with the most sophisticated new-age video-slot technology. Each spin starts with identical, adjacent twin reels that are linked together. During the spin the twin reels can expand to become triplet, quadruplet or even quintuplet reels. The unique reel synchronising and linking feature that appears on every single spin and the 243 ways to win ensures that players don’t have to travel all the way to Las Vegas to enjoy the maximum level of excitement that they get every time they play Twin Spin™.

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Ancient Fortunes: Zeus

Video Slot. RTP: 96.02%

Ancient Fortunes: Zeus slot is a Microgaming and Triple Edge Studios collaboration, and it was launched 10 April 2019. It comes with 5 reels, 3 rows and 10 ways to win, and the theme is inspired by ancient Greece. The symbols are intricately carved in stone, and you’ll benefit from a Avalanche feature with progressive multiplier. The free spins feature can be re-triggered several times, and the progressive multiplier is also beefed up significantly. You can win up to 1399.3x your stake on this medium variance game.

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Vikings (NetEnt)

Video Slot. RTP: 96.05%

It's time to take out your sun compass and set sail with the latest video slot from NetEntTM: Vikings Video SlotTM! Based on on the hit TV series, this slot takes players to the brutal Viking period where characters had to use their wits to survive and were answerable only to the gods. This 5-reel, 3-row, 243 betways video slot features a Hotspot Feature, a Shield Wall Feature, a Raid Spins symbol and a Raid Spins mode including 3 Hotspots. Additionally, in Raid Spins the excitement gets ramped up even more with the game changing to a 7-reel, 5-row, 78 125 betways reel area. Now it's time to join your favorite Vikings character and plunder the reels for your fortune!

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Extra Chilli

Video Slot. RTP: 96.82%

Video Slot 'Extra Chilli' from the software provider Big Time Gaming is a 7*8*8*8*8*7 game with 117649 betways. Slot has RTP=96.82% and MED(?) level variance. Main game features are: Wild, FreeSpins, Multiplier, Scatter symbols, Feature: Substitution Symbols, Gamble.

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Wolf Gold

Video Slot. RTP: 96.01%

Wild wolves are out to hunt in Wolf Gold, the 3×5, 25 lines videoslot. The wolf pack is stacked on all reels and when you hit the Blazin Reels Free Spins feature, reels 2,3 and 5 spin together as a GIANT symbol. Moon symbols trigger the respin feature where all the values get added together and can win one of the three available jackpots for super big wins!

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Golden Grimoire

Video Slot. RTP: 96.44%

Golden Grimoire is a game full of magic and spells, and it was launched by NetEnt 22 February 2019. It’s a low to medium variance title, and the win potential is 200 times your stake. The game comes with 5 reels, 4 rows and 40 fixed paylines, and graphically the game looks really good. The Mystery symbol can transform into any other symbol including wilds, and they even become sticky in the game’s free spins feature.

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Turn Your Fortune

Video Slot. RTP: 96.24%

Video Slot 'Turn Your Fortune' from the software provider NetEnt is a 5*4 game with 40 betways. Main game features are: Wild, FreeSpins, Multiplier, Symbols collection (Energy), Scatter symbols, Bonus wheel, FreeSpins Multiplier.

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Dragons Luck

Video Slot. RTP: 96.29%

Video Slot 'Dragons Luck' from the software provider Red Tiger is a 5*3 game with 10 betways. Slot has RTP=96.29% and MED? level variance. Main game features are: FreeSpins, Multiplier, Bonus symbols.

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Mystery Reels Megaways

Video Slot. RTP: 96.18%

Mystery Reels is a MegaWays slot from Red Tiger Gaming, and it was released 28 March 2019. It comes with 6 reels and up to 7 rows, and you can play with as much as 117,649 ways to win on any given spin. The free spins feature has the potential for “eternal” free spins and “infinite” multiplier boost, and you can win up to 10,000 times your stake on this highly volatile game.

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Mega Fortune

Video Slot. RTP: 96.4%

Mega Fortune™ is a glitzy 5-reel, 25-bet line video slot with the largest online pooled jackpot on the market. The luxury theme of the game gives the players a hint of what to expect when they hit the life changing Mega jackpot.

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Dead or Alive

Video Slot. RTP: 96.8%

Dead or Alive™ is a 5-reel, 9-line, video slot that is sure to have players riding straight into the casino. During Free spins the Sticky wild feature gives players the chance of winning big by catching wanted bandits. The maximum bet per game round is €18, with a maximum win during Free spins of €54 000.

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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 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 pay out seldom but big, while others pay out 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.

Paytable
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.

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