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Best UK Online Slots Reviews 2023

Being asked to make a list of your top five slot games is a bit like being asked what last meal you’d choose if you were on death row; there are so many epic slot games being made! And this includes finding your favourites among Yggdrasil’s own portfolio of video slots. Fortunately, when it comes to Yggdrasil slot games, we’ve managed to get our hands on the official number of players spinning the reels. This means our Best Online Slots for players from the United Kingmdom are the favourites on the web. Our overall top 5 are: Valley of The Gods, Vikings Go Berzerk, Holmes And The Stolen Stones, Champions Of Rome and Golden Fish Tank.

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There’s never been a better time to be a online slot player, but with a ton of UK slot sites to choose from, finding the best slot casinos can be tricky.

From analysing the game quality at UK slot sites, to checking the bonuses, rewards, mobile functionality and banking options – it can pay to find the best casinos to sign-up to.

At Yggdrasil Casino, our goal is to do the analysis of UK online casino sites, for you – letting you quickly create accounts at the best casinos. Our expert casino analysts, will bring you the top slot site reviews, including secure sign-up links and bonus codes for fully-licensed and regulated online casinos.


The Yggdrasil Casino team, has decades of combined experience in the casino gambling industry – meaning you can trust us to find you the best slot sites.

Our online casino check list includes:

  • Licensing & regulation
  • Bonus amount
  • Bonus conversion terms
  • Game quality & volume
  • Player support
  • VIP & rewards
  • Banking options
  • Mobile compatibility

At Yggdrasil Casino, you can check back regularly, to see the latest online slot site reviews and claim the hottest new slot bonus offers.


Every slot player has their own style and preferences, but here are some simply tips to help you maximise your value for money and slot fun:

Set your limits: Our top slot sites, let you set limits on your deposits, to help you play safely and smartly at all times. Many slot games also have session loss limits settings, on Autospin.

Play progressive jackpot slots: Playing progressive jackpot slots, gives you the chance to play for lottery size wins, without needing a big bet size. The combination of cool themes, regular slot action and big jackpots, makes progressive slots a winner.

Check bonus T&Cs terms and conditions: Casino and slot bonuses can offer you a range of incentives and some large bonus rewards. However, always familiarise yourself with a bonus’ terms and conditions, especially accepted payment types, wagering requirements, maximum win amount and which games qualify for the wagering round.

Claim promotional offers: Our best slot sites and casino links, will let you play at brands who offer regular bonuses and promotions for new and existing slot players. Claiming slot promotions can help you get better value for money.

Build-up reward points: Many of our recommended slot sites, offer reward points when you make bets. Playing at a slot site regularly, can stack-up points and let you get rewards such as free spins, real cash and other slot goodies.


Our exclusive Yggdrasil online slots stats show us that the Top Yggdrasil Slots in UK are online slots with a sense of drama and mystery. So, It should not be a surprise that our online slots with a Vikings theme are quite the hit. Our top 5 hits for players from the United Kingdom are: Jackpot Raiders, Valley Of The Gods, Vikings Go Berzerk, Holmes & the Stolen Stones and Vikings Go Wild.

Top 5 Uk Slots


The web is like Aladdin’s cave when it comes to online slots – with developers like Yggdrasil creating epic releases.
Yggdrasil slots are our favourites, but with the new YGS Masters slot series, the brand delivers games from a range of cool software houses!
Our extensive guide will take you straight to the best online slot games and slot bonuses….


The best online casino slots play slickly on mobile and give you an ace gaming experience while using a high quality mobile casino on-the-go. All Yggdrasil slots play perfectly on your mobile – but games like Power Plant and 9K Yeti are worth a special mention, with slotscapes that are designed to deliver amazing quality and ultra-playability via your phone! Depending on the mobile casinos you select, you can opt for a slot app or play mobile slots instantly in your browser.

When it comes to funding your mobile slot gaming, top casinos offer flexible banking and the same level of security you’ll find at all reputable online stores. But if you’re on-trend, you’ll want to check out Pay by phone casinos that let you fund your gaming straight from your mobile; it’s fast, easy and backed by the latest encryption tech. Pay by phone slots sites are growing in number and offer real convenience when it comes to playing the web’s leading slots while out-and-about.



Best Progressive Jackpot Slots

The best progressive jackpot slot games, have the power to payout huge multi-millions wins for the luckiest players! Games such as Yggdrasil’s Joker Millions slot are featured at many of our top-rated slot sites, letting UK slot players and slot gamers from across the world, take their chance. Along with other jackpot games from Yggdrasil, such as Ozwin’s Jackpot, Jackpot Raiders and Empire Fortune, our top slot site links will let you play at slot sites, featuring famous progressive jackpots, such as Mega Moolah.

Ozwin’s Jackpot
Joker Millions
Jackpot Raiders
Empire Fortune


Claim our top-rated casino slot bonuses and instantly play the web’s best slot games with bonus cash and free spins:

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Most top casinos offer slot bonuses to new and sometimes existing players from the United Kingdom – with a range of welcome bonuses, free spins and deposit bonuses that let you essentially play free online slots. The bonuses on offer vary depending on the slot site and current promotions. A classic slot bonus might be something like Deposit up to 100.00 and receive 100.00 in bonus cash + 50 free spins on selected slot games.

  • Welcome Bonuses: Most online casinos offer casino slot players welcome bonuses to use across selected slots and casino games (e.g. Deposit 20-100 and receive the same back in bonus cash). Some casinos offer repeat deposit bonuses, such as on your second and third deposits – while free spins may also be added as a bonus. Bonus cash and winnings typically need wagering through a specified value of bets before withdrawing (e.g. x40 play-through on bonus winnings).
  • Free Spins: Free spin slot bonuses offer you a certain number of free spins with pre-defined bet values (e.g. 50 free spins x 0.10). Some casinos offer free spins just for creating an account, but most require you to make a deposit and play-through some funds to qualify for free spins. Many free spin offers are added to the welcome and deposit bonuses. To convert casino slots winnings into withdrawable cash – you’ll need to meet the specified play-through requirement (e.g. x40 play-through on free spin winnings).
  • Deposit Bonus: Slot deposit bonuses are very similar to welcome bonuses – and sometimes they’re the same thing! However, unlike welcome bonuses, some deposit bonuses are available to existing slot players – such as deposit up to 100.00 and receive 50% or 100% bonus cashback. You might also receive some free spins when making a deposit bonus. Casino slots deposit bonuses and winnings typically need wagering through a specified value of bets before withdrawing (e.g. x40 play-through on bonus winnings).

Casino bonuses are the best way to play free online slots with real money.


Slot themes are a big deal and finding your favourite slot game category is a dead-cert for boosting entertainment value. Three top-rated slot genres are animal slots, viking slots and fruit slots – while Yggdrasil’s YGS Masters is a new category well worth a try:

Animal Slots

Almost everyone’s got a soft spot for animal slot games – and Yggdrasil have some casino slot games like Time Travel Tigers, Jungle Books, Penguin City, Racing Lovers and Golden Fish Tank, that really take a walk on the wild side. Whether you’re looking for a fun animal slot like Penguin City, or something with sharper teeth like Wolf Hunters – these games will bring your favourite animals alive on the slotscape with cool graphics, animations and ferocious bonuses and features.

Viking Slots

If you’re into Vikings, cool beards and trendy tribal tattoos – then Yggdrasil’s Viking Slots are the casino slot games to vibe with! The brand’s three releases in the genre are Vikings Go To Hell, Vikings Go Berzerk and Vikings Go Wild and have become the most famous Viking slot portfolio on the web. Each Yggdrasil Viking slot has its own unique slot plot, features, bonuses and potential rewards – so step this way warriors and shield maidens!

Fruit Slots

The famous allure of fruit machines is alive and quenching on the web, with a bunch of fruit slots delivering juicy slot sessions. Some of the top Yggdrasil fruit slot machines includes Fruitoids, Winter Berries, Doubles, and Jokerizer. The top fruit slots are loaded with classic fruit machine symbols, along with innovative sub-themes and interactive bonuses – plus plenty of betting flexibility and payout potential. Whether you’re seeking a classic fruity or a cutting-edge fruit machine – Yggdrasil’s fruit slots hits the spot.

YGS Masters slots

The YGS Masters slot concept enables stand-alone game developers to create games and release them on the Yggdrasil platform. This is causing a cascade of amazing online video slot releases – including Niagara Falls slot, Nikola Tesla slot and the high-flying 9K Yeti slot.

Slots RNG and How it Affects the Games

Online slot machines are programmed to replicate classic fruit machines, and feature Random Number Generators (RNG). The RNG is part of an algorithm that creates fair Return-to-Player levels, typically in excess of 94% with Yggdrasil slots, and top games from other studios found at our top casinos. All our casino links, will lead you to casinos licensed by official gambling authorities – such as the UK Gambling Authority, ensuring you play slot games that use regulated RNG technology, to support fair slot gaming.


  • How do I find the best online casinos to play slot games? Arrow

    You can search Google and social media for hints about the best online casinos to play slot games. Or you can sit back and let our reviews do the slot trawling for you! Our top-rated casino reviews will instantly bring you the web's top slot sites – inclusive of a full range of Yggdrasil games.

  • Can I claim bonuses when playing online slot machines? Arrow

    Yes. Almost all good quality casinos offer online slot players bonuses, ranging from welcome bonuses, to free spin offers and deposit bonuses for existing players. Check out our casino reviews to view the latest slot bonuses, claim the latest offers and check if your country qualifies.

  • Can I spin online slots on my mobile? Arrow

    Yes – all high quality casino slot sites offer mobile slot gaming. Some casinos offer the option of a online slot app, but an increasing number of slot sites are mobile-enable for instant spinning in your browser.

  • How much money can I win playing slots? Arrow

    Online slot machines are based on random luck – so there's no guarantee of winning spins and sessions when playing casino slots. However, online slots are programmed to deliver fair average 'return-to-player' levels, typically over 95-96% if you select high RTP slot machines. Slots can offer good value for money entertainment when you play with a sensible leisure budget. If you're lucky, then you can strike some nice winning sessions. And if you're very lucky, you can hit big wins and even progressive slot jackpots worth millions of euros!

  • Can I legally play online slot sites in my country? Arrow

    Online slot sites offer great flexibility to players all over the world, but some sites restrict players from certain locations. Our casino slots site reviews will help you see if you can register, claim bonus and play legally at different slot sites.

  • Are online slot sites trustworthy? Arrow

    Yes! Online slots sites are regulated by the United Kingdom Gambling Commission and are trustworthy. Remember to always check that your desired online casino has a valid license. At Yggdrasilcasino.com we only review casinos that are in compliance with the current laws and are, therefore, trustworthy.

  • What is the best strategy for playing online slots? Arrow

    The best strategy to play online slots, is to play responsibly. Plan ahead and know your limits. Never play with money you cannot afford to loose.

  • Do online slot sites offer other games apart from slots? Arrow

    Yes, most online slot sites also offer casino games. You need to check with your favourite site and see what they offer. Usually you can find slots, casino games and live casino games.

  • Which is the best online slot site? Arrow

    This is a very frequently asked question and the answer is that there is not one single answer possible. Each online slot site offers different game providers, deposit methods etc. First you need to establish your own preferences and then you can choose from there. The good thing is that opening an account is completely free, so you can test different sites until you find the perfect fit for you.

  • Are online slots fixed? Arrow

    No, online slots are not fixed. All online Slots have a Random Number Generator (RNG) that ensures that every spin is totally random and unique. Every time you press the play button, a random set of numbers is created. The RNG does not store any numbers and does not have a memory, hence every single spin is guaranteed to be random.

United Kingdom Help and Support Lines for Gambling Addiction and General Gaming Inquiries

  1. UK Gambling Commission (www.gamblingcommission.gov.uk)
  2. BeGambleAware (www.begambleaware.org)
  3. The Betting And Gaming Council (www.bettingandgamingcouncil.com)
  4. International Association Of Gaming Regulators (www.iagr.org)
  5. Gamblers Anonymous (www.gamblersanonymous.org.uk)
  6. Independent Betting Adjudication Service (www.ibas-uk.com)
  7. GamStop (www.gamstop.co.uk)
  8. Gamcare (www.gamcare.org.uk)
  9. Gambling Therapy (www.gamblingtherapy.org/en)
  10. Net Nanny (www.netnanny.com)