UK Rank based on 12200+ indexed slot games
Top ranked slots UK, June 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
The long-awaited Narcos slot is finally here, and it comes jam packed with flying bullets and action all the way. This branded title was launched by NetEnt May 23rd 2019, and we don’t think fans of the legendary NetFlix show will be disappointed. The visuals are amazing, and NetEnt have chosen a semi-realistic style that reminds us for Grand Theft Auto.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
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
Wolves are prowling the casino, getting ready for the right moment… to spin! Spinsane™, the latest offering from NetEnt™, is a 5-reel, 3-row, 27-line video slot based on classic stepper mechanics. The look and feel of the game brings the ultimate slot machine experience. Suspense effects inject a serious dose of excitement into the game. The graphics are themed around wolves. Why? Because wolves are ice cold and smooth as hell, just like this slot. Wild symbols, Scatter symbols, regular symbols, super symbols, and blank spaces can appear on the reels. For each winning bet line, super symbols can substitute for the regular symbols of the same kind to pay the highest possible winning combination. The game features Free Spins with one random Overlay Wild Reel for each spin. A simple, entertaining game, but with big payout potential: this slot has got some serious BITE.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
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
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
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
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
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
Game of Gladiators slot takes you right into the battle arena, and the game was released by Play’n Go 6th of June 2019. You start out in the dark underground tunnel, but as soon as you land 3 scatters you’ll enter in to the epic Battle free spins feature where you’ll receive free spins until you either win or die trying.Read more
Legacy of Ra is a Book of Ra-inspired Megaways slot from Blueprint Gaming, and it was launched across all casinos 5 March 2019. It comes with 6 reels, between 3 and 7 rows and up to 15,625 Megaways. The main feature is the free spins feature with expanding symbols, and you can win up to 50,000 times your stake on this highly volatile game.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
Beavis & Butt Head is a branded slot from Blueprint Gaming, and it was launched across all casinos 29th of May 2019. Any fan of the MTV cult cartoon from the 90s will obviously love this release, and for newcomers there should be plenty of action to keep you entertained. The two sniggering, teenage slackers with the elongated heads have plenty of features up for grabs.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
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
Mystery Spin Deluxe Megaways slot is a fruit machine inspired game from Blueprint, and it was launched across all casinos on the 6th of June 2019. The game is sporting classic fruit symbols, but the MegaWays engine takes you on a wild ride with up to 117,649 ways to win on every single spin. Don’t let the upbeat and cheerful soundtrack fool you, cause this baby packs a solid punch.Read more
Opal Fruits is set in deep space with semi-transparent reels and graphics that slightly reminds us of Starburst. The similarities ends with that, cause this game packs a punch that would crush Starburst and most other slots into a black hole. With a brand new and trademarked Triple Reaction™ engine, Big Time has delivered something truly unique and special with this game.Read more
After a successful excursion in Ecuador, Kane jumped on a plane and started his long journey home for some well-needed rest. However, fate had a different plan in mind… Suddenly the engines start to sputter. The altitude drops fast. In the distance, a volcano island seems like the only hope of survival. The impact is rough as the plane hits the ground. Through fire and dust, Kane escapes the wreckage just in time before the remaining fuel explodes. As the smoke clears, Kane finds himself surrounded by hostile natives. However, the hostility suddenly fades when they discover the Eye of Tiki tattoo on his left shoulder. Behold, the king has returned! Kane finds his new kingdom is overflowing with gold. There’s gold everywhere. The natives claim the source is the massive volcano in the center of the island. Could it be true, is the molten core of the volcano really made of pure gold?Read more
Arcane: Reel Chaos is a well done superhero slot from NetEnt, and it was launched across all casinos May 16th 2019. The gang of 4 superheroes must protect their city from the evil villain, Deep Pockets, before it’s too late. The story might seem like “nothing new”, but the characters are well done “meta-human” mutants with anti-hero qualities we thoroughly enjoy.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.