Best Online Slots Casinos in Ireland

Compare our list of the best online slots casinos in Ireland and read our comprehensive online slots guide below. Our team of iGaming experts has garnered the best slots available for Irish players.

Written by Conor Murphy
Verified by BettingGuide team
Last updated 3/1/2024

Top 9 Online Slots Casinos in Ireland (2024)

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Best Online Slots in Ireland (2024)

Below, we listd the best online slots in Ireland in 2024:

Slots RTP Volatility Max Win Bonus-buy Game Studio
Book of Dead 96.00% High 5,000x N/A Play'n GO
Big Bass Splash 95.67% High 5,000x Yes Pragmatic Play
Gates of Olympus 96.5% High 5,000x Yes Pragmatic Play
Sweet Bonanza 96.48% High 21,100x Yes Pragmatic Play
Big Bass Bonanza 96.71% Medium 2,100x Yes Pragmatic Play
Gates of Olympus 1000 96.50% High 15,000x Yes Pragmatic Play
Starburst 96.09% Low 50,000x N/A NetEnt
Sugar Rush 95.50% Very high 5,000x Yes Pragmatic Play
Gold Blitz Extreme 96.00% High 5,500x Yes Fortune Factory
Gold Blitz 94.00% High 5,000x Yes Fortune Factory
Big Bass Christmas Bash 96.71% High 5,000x Yes Pragmatic Play

Best Slots Casinos in Ireland (2024)

Online slots are the most popular type of game for a lot of Irish users at online casinos.

The chance to win life-changing amounts of money from small stakes on a single spin of the reels makes them very appealing, while a lot of them are fun to play in their own right.

Thousands of different online slots are available to play these days, with various different providers developing games that are featured on the top online slots sites in Ireland.

So much choice can be overwhelming for some customers, which is why we have put together the ultimate guide to the best online slots in Ireland.

You can simply compare all the best online casinos that offer real money slots in our list above. Or check out our detailed comparisons below as we compare the number of online slots available on each casino, the average payout, and which top game providers are being used such as NetEnt and Microgaming.

How We Choose the Best Online Slots Casino Sites in Ireland

A variety of factors are considered when we put together our reviews, including the following:

  • Safety and licences 
  • Welcome bonuses 
  • Range of games 
  • Fair play 
  • Payout percentage 
  • Customer service 
  • Mobile experience

The first point is arguably the most important, with casino sites needing to ensure they tick all the necessary boxes when it comes to safety and licences. Ireland has been criticised for lax regulatory control for the online gambling industry, which makes it even more crucial that we check out a site's licenses and security provisions during our reviewing process. Readers can be assured that all of the sites recommended on our site are 100% safe to use, while we also check to ensure slots are compliant with regulations surrounding RNG technology too.

Welcome bonuses are how online casino sites in Ireland attract new users to sign up for an account. Many of these promotions are similar, with deposit match bonuses typically offered as a way to hook people in. Typically, players can get a 100% boost on their deposit when signing up to play slots at an Irish online casino. Other popular promotions include free spins, which give players a chance to test out games without risking any of their own cash. An increasing number of online casino sites in Ireland now also offer no deposit bonuses. While these promotions are at a smaller scale than deposit match bonuses, they mean players can sign up and start spinning the reels on top slot games without having to even make a deposit. How good a welcome bonus depends on the terms and conditions, so we assess these.

Most online casinos have a strong range of games available, but players will usually want the biggest choice possible. Some sites are tied to one slot developer, which means games from other companies are not offered. While slots are the primary draw for plenty of online casino customers, sites offer a range of alternatives such as poker, bingo and classic table games.

Fair play is a must in order to be recommended as one of the best online slots sites in Ireland. RNG is crucial, but sites also have to make sure they pay out promptly. Some online casino sites have seen their reputation damaged as a result of being reluctant to pay their winners.

Players signing up to online casinos in Ireland will want to make sure that the slots they choose to play are 100%. After all, when playing through the internet, it is easy to wonder if such games are rigged in favour of online casinos, which make most of their money from slots

Testing companies such as eCOGRA, which is based in London and stands for eCommerce Online Gaming Regulation and Assurance, are responsible for making sure games are fair.

After being established back in 2003, eCOGRA testing includes RNG and RTP game evaluations to ensure that casino game providers and sites are not breaking the rules.

Sites that pass eCOGRA assessment should display the organisation's seal of approval somewhere clear on their website, with this often found at the bottom of the home page.

Sites that do not have proof of eCOGRA assessment are hard to trust, which is why we make sure that casino sites in Ireland we recommend tick the necessary boxes in this department.

While eCOGRA is the biggest name in the world of online slots testing, other companies that do a similar job include iTech Labs, TST, GLI and NMi. 

Online slots sites are in a battle with each other overvalue, with their payout percentage one of the key metrics to be aware of in this department. We compare how top Irish online casinos match up against each other when it comes to their payout percentages.

In the event of a player having a problem or issue with their account, they will need to be assured that their chosen online slots site has solid customer service. Nowadays, having 24/7 customer service is seen as a must, while a range of contact options should be in place too. Live chat is one of the most popular ways to use customer service at casino sites in Ireland, but many players prefer to use either email or telephone to get in touch with support staff instead.

Lastly, in the modern era, the mobile experience of Irish slots sites has to be taken into account. A lot of people now prefer to play slots on a smartphone or tablet computer, rather than a laptop or even a desktop computer. As a result, a lot of operators within the industry have launched slots apps that can be downloaded on to mobile devices. For our reviews, we check out how well these apps work and make sure that mobile play is possible at online slots casinos.


#1 Best Slots Casino in Ireland

LeoVegas comes out on top for the number one best slots online casino in Ireland, You will find 1000's of top online slots games from the best gaming providers around the world. Also, LeoVegas offers the best mobile app and mobile site for seamless gaming on any device.


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  • "Online Casino of the Year" and "Mobile Operator of the Year" awards in 2019


  • 1400+ Casino Games
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Get up to $1000 + 200 Cash Free Spins

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Expiration 60 Days
The player has 14 days from registration to claim their new player casino welcome offer.

#2 Best Slots Casino in Ireland

888Casino offers one of the most comprehensive online casinos with 100's of the best online slots games, fast withdrawals, and a great 24/7 customer service. Try 888Casino today and take advantage of the €88 no deposit bonus for new customers from Ireland.


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How to Pick the Best Slot to Win Real Money

Online real money slots are the heart of casino games. It's an understatement to say a slot game collection determines the future of an online casino. To cover every player's needs, the number of slot games at the best online casinos in Ireland can add up to several thousand these days.

However, having too many options often leads to confusion. Some of you might wonder, "Which slots should I play for real money?" or "Are there any ways to find the best real money slots for me?".

There are many elements to consider when choosing the best slots to play online for real money. So, here are the key factors you should know about real money online slots:

  • RTP
  • Volatility
  • Bonus Rounds and Free Spins
  • Bonus-buy Feature
  • Game Studios

Let us break down each element for you below.

  • RTP

    RTP stands for Return to Players in online gambling. It indicates how much an online real money slot pays out to players from all the money bet on the game.

    • For example, in theory, an online real money slot with an RTP of 97% returns €97 for the total bet amount of €100. The rest 3% is the so-called house edge, i.e. profit for the house (casino).

    Theoretically, you are expected to lose 3% of your money in the long run if you keep playing on an online slot whose RTP is 97%. However, it does not mean you cannot win big money by playing online slots if you understand the concept of probability and volatility.

    Of course, the higher the RTP of an online slot, the more winnings you can expect in the long term.

  • Volatility

    Volatility in online real money slots is like a game's way of saying how often and how much it will give winnings. Imagine a slot game is like a treasure chest. If a game has high volatility, it's like a treasure chest that doesn't open very often, but when it does, there's a chance of finding a lot of treasure there.

    Sugar Rush Volatility

    Let's say there are two online slot games for real money whose RTPs are the same at 97%, but one has high volatility while the other has low volatility. The high volatility slot pays less often, but when it does, you're likely to hit a big win. On the other hand, the low volatility slot pays more often but in small amounts.

    By and large, these two games pay out in different frequencies and sizes but return the same amount of money to you in the long run.

    Playing slots with high volatility might make you feel like you never win because of their low payout frequency, but it comes with the absolute excitement of potentially winning a fortune. On the contrary, real money slots with low volatility would be a better option if you want to keep it safe and enjoy the experience of playing slots for a long time.

  • Bonus Rounds and Free Spins

    In essence, slot bonus rounds are special game rounds within a slot machine that activate at certain moments during your play.

    These bonus games might be triggered by landing scatter symbols or activated randomly. Sometimes, you can initiate them at any point for a fee.

    Nolimit City Punk Rocker Bonus round

    Free spins are spins that don't require you to use your balance. These are commonly found in numerous online slots for real money. To access them, you typically need to land a set of special symbols in a single spin.

    Engaging in online slots with real money can be expensive, especially when luck isn't on your side. Free spins offer an opportunity to play and potentially win without any cost. Additionally, some video slots provide opportunities to gain extra free spins while using your current free spins, leading to an extended series of cost-free gaming rounds.

  • Bonus-buy Feature

    In traditional online slots, players had to play until they landed scatter symbols on paylines to trigger bonus rounds. However, many recent real money slot games have a feature that allows you to buy bonus rounds.

    Sugar Rush Bonus-buy Feature

    Simply put, you pay a fee to trigger a bonus round. Once you confirm the buy, the game lands scatter symbols and enters a bonus game mode. One perk of buying a bonus round is that it has the potential to generate big wins on highly volatile slots.

    However, it's worth noting that many online slot casinos do not allow you to use the feature with casino bonus money.

  • Game Studios

    There are a multitude of game studios that produce real money slot games online. They strive to add something unique to their products to stand out. Some of them put efforts into creating high-quality animation and sounds, while others specialise in developing new features to make the experience exceptional.

    Hacksaw Chaos Crew2 Gameplay

    Knowing what game studios have what slot styles helps you select the best game studio that suits your taste.

Different Types of Online Slots for Real Money

Online slots have diversified significantly, offering a variety of gameplay styles despite all being governed by Random Number Generators. In Ireland, top online slot casinos often prioritise these games, presenting a vast selection that includes 3D slots, video slots, and those themed around popular media.

3-Reel Slots

  • Also known as classic slots, these are the traditional form of slot machines.
  • They have three vertical sections, or reels, which spin when the game is played.
  • Winning combinations are typically made by matching symbols across a single payline, often the middle line of the reels, although some 3-reel slots may have more paylines.
  • These games are known for their simplicity and often feature classic slot symbols like fruits, bars, bells, and 7s.
  • The design and sound effects often mimic old-school mechanical slot machines, appealing to players who enjoy a nostalgic gaming experience.
Fire Joker 3-reel slot

5-Reel Slots

  • These slots are a more modern variation and are prevalent in online casinos.
  • They consist of five vertical reels and usually have more paylines than 3-reel slots, increasing the number of possible winning combinations.
  • 5-reel slots often come with additional features like free spins, bonus rounds, and various types of wild symbols.
  • The themes and graphics in 5-reel slots are typically more diverse and visually engaging, ranging from adventure and fantasy to pop culture themes.
  • The complexity and variety of bonus features in 5-reel slots make them attractive to players looking for a more dynamic and interactive gaming experience.
Striking Hot 5 5-reel slot

Megaways Slots

  • Megaways is a slot game format developed by Big Time Gaming. It revolutionized online slots with a unique reel modifier mechanism.
  • These slots offer a dynamic payline system that changes the number of symbols appearing on each reel during every spin, typically ranging from two to seven symbols per reel.
  • The changing reel structure means the number of ways to win varies with each spin, often offering thousands of possible winning combinations, sometimes exceeding 100,000 Megaways.
  • Megaways slots often include features like cascading reels, free spins, multipliers, and wild symbols.
  • The unpredictability and potential for high numbers of winning combinations make Megaways slots very popular among players who enjoy dynamic and fast-paced gameplay.
Great Rhino Megaways slot

Jackpot Slots

  • Jackpot slots are games that offer a jackpot as the main prize, which can be won in various ways depending on the game’s rules.
  • There are two main types of jackpot slots: fixed and progressive.
  • Fixed Jackpot Slots have a predetermined maximum payout that does not change.
  • Progressive Jackpot Slots have a jackpot that increases every time the game is played, but the jackpot is not won. The jackpot continues to grow with a portion of every bet made by players until it is won, often reaching extremely high amounts.
  • Progressive jackpots can be individual to a single game or linked across multiple games and even multiple casinos, leading to multi-million-dollar prizes.
  • Jackpot slots are favoured by players seeking the chance for large payouts, though the odds of hitting the jackpot can be quite long.
Coin Charge Jackpot slot

Cascade Slots

  • Also known as cascading reels or tumbling reels.
  • In these slots, winning symbols are removed from the reels after a win, allowing new symbols to fall or 'cascade' into their place.
  • This can lead to consecutive wins from a single spin, as the new symbols can form new winning combinations.
  • The cascades continue until no more wins are formed.
  • Often, these slots include additional features like increasing multipliers with each cascade.
  • The cascading mechanism adds an extra level of excitement and can lead to extended play from just one spin.
Gonzo's Quest Cascade slot

Cluster Slots

  • Cluster slots, also known as cluster pays slots, are a type of online slot game where payouts are awarded based on clusters of symbols.
  • Instead of the traditional payline system, these games typically pay out when a group of the same symbols form a cluster, often touching horizontally or vertically.
  • The size of the cluster needed to win varies from game to game, but it typically involves a minimum number of matching symbols that must be adjacent to each other.
  • These games often come with unique features like cascading reels, where winning symbols disappear and new symbols drop down to replace them, potentially forming new clusters.
Reactoonz Cluster slot

Grid Slots

  • Grid slots are characterised by their layout, which is typically in the form of a grid (like 5x5, 7x7, etc.).
  • Unlike traditional slots, which have reels that spin vertically, grid slots display their symbols in a grid format, and winning combinations can be formed in various patterns across the grid.
  • These games can include cluster pays mechanics, but they may also employ other methods of determining wins.
  • Grid slots often feature more complex gameplay and may include elements like cascading symbols, bonus rounds, and special features triggered by certain symbol combinations.
Sugar Rush Grid slot

Introduction to Online Slots

Online slots are popular for their simplicity. You just deposit, pick a game, set your bet, and start spinning. Unlike other top casino games, you don't need to understand complicated game rules to play online slots. They rely purely on luck and often offer free spins, adding to their appeal.

Irish online casinos profit greatly from slots, with a significant portion of their income coming from these games. Players can win large sums from a single spin, underscoring their profitability for casinos.

Slots come in various types and new ones are added regularly. They're innovative and often lead in gaming technology. Plus, they're designed for mobile sites and apps.

Next, let's understand how slots work at Irish online casinos.

How Do Online Slots Work?

Online slots use a Random Number Generator (RNG), ensuring each spin is independent and fair. This means past or future spins don't influence the current one. Casinos must use RNGs to guarantee fairness.

Game developers create slots, with some casinos offering games from specific developers only.

Why You Should Play Online Slots

Slots are entertaining with high payout percentages. They offer life-changing jackpots even with small bets, and betting amounts are flexible to suit all budgets.

Online casinos provide various bonuses and promotions for slots, like no deposit free spins. With a vast selection of games, players are bound to find new favourites regularly.

Popular Online Slot Providers 

Irish slots casinos are likely to feature games from a wide range of providers. Some companies are better known than others, but even smaller developers can produce fantastic slot games.

With that in mind, here are 10 of the most popular slot providers at Irish online casinos right now:

Microgaming: Claiming to have developed the world's first true online casino software in 1994, Microgaming has long been one of the industry's most important companies. Microgaming was also a pioneer in the launch of the first mobile casinos, having launched its software in 2004.

NetEnt: Swedish studio NetEnt has been one of the most popular slot providers in the world for many years. Founded in 1996, NetEnt produces all types of casino games but has a strong focus on slots. Over 200 online slots have been released on to the market by NetEnt so far.

IGT: International Game Technology is one of the best known casino game providers in the world, with a long and proud history of slot development. IGT has been around for decades but the release of a new game from this slot provider still provokes a lot of excitement.

Novomatic: A range of video slot classics are available from Novomatic, with Book of Ra, Sizzling Hot and Lucky Lady's Charm some of the company's biggest hits to date.

Playtech: Founded in 1999, Playtech is now one of the most popular slot providers in the world. At the end of 2019, Playtech launched an industry-first, with its Live Slots potentially offering a glimpse of the future of online casinos. Age of the Gods: King of Olympus is one of the best Playtech slots that is available to play at online casino sites in Ireland.

Play'n GO: Specialising in high variance slot games, Play'n GO has grown into one of the most popular slot providers around over the course of recent years. Play'n GO titles include the huge Rich Wilde series, which has spawned a wide variety of imitations across the industry.

Pragmatic Play: A leading provider of slot game content for online casinos, Pragmatic Play hits include Wolf Gold and Dog House. Despite only being founded in 2015, Pragmatic Play games can be found at most of the top online slots sites in Ireland, with the company continuing to grow.

Yggdrasil: Slots from Yggdrasil are known for their incredible design, with progressive jackpot games among those produced by the developer. ‎Valley of the Gods is one of the top online slot games to have been released by Yggdrasil, with Holmes and the Stolen Stones up there too.

Quickspin: Another Swedish studio operating at the top of the online slots industry is Quickspin, a company that focuses on quality rather than quantity. This means that Quickspin does not release nearly as many new slot games as other providers, but they are always worth trying.

Realistic Games: Last on our list of the best online slots providers is Realistic Games, a leading casino content developer. Realistic Games is the company behind the hilarious Hot Cross Bunnies game, with the UK-based firm also producing games like Take Note.

How to Play Online Slots for Free

If you're new to online casinos, starting with free online slots is a great idea. Here's how you can do it:

  1. Demo Mode: Many sites offer a demo mode for top slot games. You can't win real money, but it's a risk-free way to understand the game and its bonus features.
  2. Promotions and Bonuses: Casinos often have welcome bonuses, including free spins, allowing you to play slots for free and still win real money. Look out for no deposit bonuses and deposit match bonuses too.

Remember to read the terms and conditions carefully. These often include wagering requirements and win limits. Typically, you'll need to bet the bonus amount a certain number of times before withdrawing. Also, not all games contribute fully to these requirements, though slots usually do.

Playing Online Slots for Real Money

Playing slots with real money is popular in Ireland. It offers the chance to win significant amounts, even with small bets. Here’s how to maximize your chances while playing responsibly:

  1. Choose Value Slots: Look for slots with a high Return to Player (RTP), ideally around 97% or more. Higher RTP means better returns over time.
  2. Understand Variance: Variance, or volatility, indicates how often a slot pays out. High variance slots pay less frequently but offer larger wins. Choose a variance level that suits your playing style and bankroll.

For those with a smaller bankroll, low variance slots are preferable as they offer more frequent wins, maintaining your balance while still providing a chance for big wins.

Always bet within your limits and enjoy the experience of playing online slots, whether for free or with real money.

Frequently Asked Questions