UK Rank based on 13500+ indexed slot games
Top ranked slots UK, August 2019
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.Read more
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.Read more
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.Read more
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.Read more
Extra Chilli is a Megaways™ slot from Big Time Gaming with the possibility of benefitting from as much as 117 649 paylines. The 6-reels game was first launched in april 2018, and features an extra horizontal reel below the normal reels. Winning symbols are replaced by new symbols, always keeping you on your toes with re-spins as long as you keep landing winning combinations.Read more
Return of Kong Megaways is the 13th Megaways slot from Blueprint Gaming, and it was launched 26 April 2019 as a Poker Stars exclusive. The game is jam packed with action, and the graphics and animations are top notch. It might not offer all that much in terms of innovation, but as the title indicates, this is more of a nostalgic trip down memory lane than an attempt to reinvent the wheel (or should we say reel).Read more
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.Read more
Dead or Alive 2 is finally here, and it’s everything we hoped for and more. The game was released 23 April 2019, and NetEnt has been smart enough to include the original free spins feature as 1 out of 3 free spins options. This way you can stick to only this game, if you wish. Obviously, the graphics and soundtrack is amazing, and with a win potential of £2,000,000 we have a feeling this game will be an instant classic.Read more
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.Read more
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.Read more
Video Slot 'Rainbow Riches Megaways' from the software provider Barcrest is a 6-7 game with 117649 betways. Slot has RTP=95.9% and MED-HIGH level variance. Main game features are: Wild, FreeSpins, Multiway (+1024), Bonus symbols, FreeSpins Multiplier, Random bonus symbols, Avalanche, Megaways, Additional Free Spins.Read more
Mercy of the Gods slot is a progressive jackpot game from NetEnt, and it was launched across all casinos 4th of July 2019 (exclusive launch from 16th of May). This is a very similar game to NetEnt’s successful jackpot slot, Divine Fortune, at least when it comes to the bonus features. The theme has changed from ancient greece to ancient egypt, but there are some significant mathematical differences.Read more
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.Read more
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.Read more
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.Read more
Video Slot 'Who Wants To Be A Millionaire Megaways' from the software provider Big Time Gaming is a 7*8*8*8*8*7 game with 117649 betways. Slot has RTP=96.24% and HIGH level variance. Main game features are: FreeSpins, Bonus Game, Respins, Scatter symbols, FreeSpins Multiplier, Gamble, Avalanche, Megaways.Read more
The Sword and The Grail takes you right into the castle of King Arthur, and the myth about the Holy Grail and the Excalibur Sword all wrapped up in one. The graphics and soundtrack is very well done, and the game comes with a rock solid potential and very high volatility that even hardcore gamblers might find tough to handle.Read more
Video Slot 'Buffalo Rising Megaways' from the software provider Blueprint is a 6-7 game with 117649 betways. Slot has RTP=96.5% and MED level variance. Main game features are: Wild, FreeSpins, Expanding Symbols, Scatter symbols, FreeSpins Mode Choosing, FreeSpins Multiplier, Avalanche, Megaways.Read more
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.Read more
Even the most battle-hardened Vikings need to take some time off from pillaging & plundering, and enjoy a relaxing vacation every now and then …. it’s called self-care. In this hilarious twist on the ever-popular Viking theme, we encounter 3 tough Vikings who have returned home from an exotic Summer holiday in Hawaii. Clearly the tropical paradise made a lasting impression on our fearsome heroes who are still wearing their Hawaiian shirts and sipping on colorful cocktails. They also brought back a few holiday souvenirs like pineapples, surfboards and Tiki totem poles.Read more
Play n Go’s intrepid explorer Rich Wilde is back and embarking on another epic adventure – only this time he is unravelling darker mysteries in Rich Wilde and the Tome of Madness. Rich Wilde and the Tome of Madness is based on the fictional writings of H.P. Lovecraft. Cthulhu is a giant sea monster that resembles an octopus with tentacles, green rubbery skin, and dragon-like wings. It is said that Cthulhu can make people lose their minds just by looking at the creatureRead more
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.Read more
Grand Spinn is a well-made classic slot from NetEnt, and the game was launched across all casinos on the 24th of July 2019. It resembles a stylish Art Deco fruit machine, and it comes with a high-class vibe that suits the high potential you’ll find here. What’s even better is that the game comes in two different versions, the regular Grand Spinn and Grand Spinn Superpot.Read more
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.
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 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 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.