Best Online Slots in Ireland

Irish online casinos offer slots with exciting designs, easy gameplay, and the chance to win big. With so many choices, it can be hard to find the best ones. But don’t worry! Our experts have created a guide to help you find the top places to play slot games.  Besides, this guide covers everything you need to know about different types of slots and their features.
Best Online Slots in Ireland

The Best 5 Irish Online Casinos With Slots

  1. Wolfy Casino
  2. Welbet
  3. Olympusbet
  4. 20Bet
  5. Slotimo

Our Criteria for Choosing Top Irish Casino Sites with Online Slots

Irish online casinos offer many slot games. Let us explain our selection process so you can trust our recommendations. Our experts carefully evaluate the following key factors.

Step 1
Licensing and legislation
We only recommend casinos with valid licenses. However, having a proper license is just the beginning. The top online casino brands also offer trusted payment methods and employ other security measures to ensure a safe online casino experience for their players.
Step 2
Each online casino site undergoes a thorough reputation review. Our experts analyze player reviews from multiple sources. These reviews often highlight both the drawbacks and strengths of the casino. We take into account positive and negative feedback from players to ensure an unbiased and impartial evaluation.
Step 3
Website user-friendliness
We recommend best online casinos with modern designs and easy-to-use interfaces. Our experts personally test each platform to find its strengths and weaknesses.
Step 4
Bonuses are important for a great online gambling experience. We carefully assess their attractiveness and wagering conditions. The casinos we suggest have generous welcome packages, loyalty rewards, and free spins for new and returning players. Continue reading to learn about the bonuses available on various casino sites. 
Step 5
Variety of slot games
Choosing a great Irish casino means having lots of game options. We make sure our recommended casinos work with trusted software providers, offering a wide range of top-quality entertainment. 
Step 6
Easy sign-up
We carefully check how easy it is to sign up on Irish casino sites. A simple sign-up process makes a good first impression. We look for sites with the smoothest registration process and minimal hassle.
Step 7
Payment methods and processing times
We check the payment options available on each site and recommend those accepting popular choices like bank cards, e-wallets, prepaid cards, cryptocurrencies, and more. Among those, we choose casinos with fast processing times and no transaction fees.
Step 8
Mobile experience
We review how easy it is to use Irish online casinos on different devices. It should be said that many Irish casinos have great mobile websites that work well with Safari and Chrome, and some even have special apps for iPhones and Androids.
Step 9
Customer support
Our experts select casinos with quick support through chat, email, and phone. 

Top-5 Online Casinos in Ireland With the Best Slots

So, we have selected top online gambling platforms renowned for their excellent slot games, rewarding bonuses, and big chances to win.


olympusbet UI

Olympusbet offers higher withdrawal limits than many other casino sites. The site may seem complex at first, but users will find many bountiful bonuses there. For example, new players receive a generous 100% match welcome bonus of up to €500 plus 100 free spins. The platform hosts popular slot games like Book of Dead, Starburst, Gates of Olympus and many more. Olympusbet also offers table games, live dealer options, and wonderful customer support.

  • Slots bonuses
  • Large withdrawal limits 
  • 24/7 customer support via live chat and email
  • Regular tournaments and reload bonuses
  • A limited number of sports for betting 
  • No phone support
100% up to 500 EUR + 100 FS

Wolfy Casino

wolfy casino UI

Here you can play many casino games from top providers like Microgaming, NetEnt, and Play ‘n’ Go. Wolfy is especially great for slot enthusiasts. New members get a 100% welcome bonus of up to €200 to explore the slot collection risk-free. For added convenience, Wolfy supports many payment methods.

  • A great selection of slot games
  • Multiple types of promotional offers
  • No bonus code required
  • Lots of payment methods
  • High wagering requirements for some games
  • A limited number of live casino games
Wolfy Casino
100% up to 200 EUR


20bet UI

The game library at 20Bet is vast, and organized into easy-to-navigate categories like Popular, Slots, Table Games, Live Casino, Jackpots, and New Games. They offer enticing promotions, including a welcome bonus that matches your first deposit by 100% up to €120 and includes 120 free spins. There are also ongoing promotions like slot tournaments and cashback deals. On Mondays, players can receive up to €100 back in losses from the previous week.

  • Huge selection of casino games
  • Lots of progressive jackpot slots
  • Very easy-to-navigate website 
  • Lots of regular bonuses and rewards for players
  • No telephone support 
  • Limited support for mobile users
100% up to 120 EUR + 120 FS

Weltbet Casino

weltbet UI

Weltbet offers a variety of games from NoLimit City, Playtech, Pragmatic Play, and others. Their game selection is regularly updated with new titles. Irish players can enjoy a diverse collection of slots, including traditional fruit machines and modern video slots. Weltbet also has over a dozen progressive jackpot games, starting at just €10. New players receive a generous 100% first deposit match up to €500, plus 30 free spins to try out the slots without risking any money. 

  • Over 2000 games to choose from
  • 400+ progressive jackpot slots
  • Many slot games
  • Many live dealer games
  • Bonus cash for popular games
  • Great  live casino section
  • Does not offer many responsible gambling features
  • A deposit match bonus is less generous compared to other sites
  • No phone support
100% up to 500 EUR + 30 FS


slotimo UI

Slotimo is another excellent option for Irish online casino enthusiasts looking for a wide variety of slot games. With over 2,000 games in their library, there’s something for everyone’s taste. New players can also enjoy a welcome bonus, matching deposits up to €1,000 and including 100 free spins on the popular slot game Seven Deadly Sins. Just be aware that access to the site is restricted outside of Ireland.

  • Huge collection of slot games
  • Modern UI/UX of the website
  • A large welcome bonus for new players
  • Lots of payment methods
  • Sports betting available
  • Sometimes payouts can be processed slowly 
  • No phone support
Slotimo Casino
Welcome package up to 1000 EUR + 150 FS

Pros and Cons of Playing Online Slot Games

  • You can play slot games on your mobile device
  • You can explore a wide range of slot games with various themes and features
  • You can receive generous bonuses to play slots from online casinos
  • You can frequently play slots for free using a no-deposit bonus or demo games
  • Online slot games can be addictive due to their easy access
  • Withdrawals of winnings might be delayed
  • There may be issues with the fairness of certain online slot games
  • Online slots don’t offer the social interaction found in offline casinos

Types of Slot Machines at Irish Online Casinos

In the early days, online slots in Ireland were simple, usually with five reels and three rows. The first online video slot with a bonus round called ‘Reel ‘em In’, was introduced in 1996. Nearly two decades later, players have a whole new generation of casino slots with diverse formats and enticing features. Get to know the primary types of online slots available at Ireland’s best online casino sites.

Classic slot games

Classic slot games, or traditional or retro slots, emulate the vintage mechanical slot machines commonly seen in offline casinos. These games have simple gameplay mechanics and graphics, and nostalgic symbols like bars, bells, and lucky sevens. 

Fruit machine slots

Fruit slots also bring back the classic style of early slot machines. Inspired by pub fruit machines, they feature symbols like cherries, lemons, and watermelons. These slots have simple gameplay, making them easy and enjoyable to play. While traditional fruit machines were straightforward, modern online versions may include bonus games or other features for more opportunities to win.

Progressive jackpots

Progressive jackpots are a type of jackpot that increases gradually as players place bets across a linked network of slot machines or other online casino games. The prizes can be huge, often reaching millions of euros, and winners are chosen randomly. Popular progressive jackpots are Mega Fortune and Mega Moolah. In December 2023, someone won a record-breaking jackpot of €38,461,200.95 on the game Wheel of Wishes.

Drop jackpot slots 

Must Drop Jackpot slots have a prize that must be won before it reaches €1,000. Once the jackpot reaches this threshold, the prize will be awarded to a lucky player. Daily Drop Jackpots are guaranteed to be won every day, usually before 22:00 GMT.

Megaways slots

Megaways slots offer players numerous ways to win with each spin. The exact number varies by game and is typically displayed above the reels. Popular titles like Bonanza Megaways, Extra Chilli Megaways, and Gonzo’s Quest Megaways are known for their innovation and high volatility.


Slingo merges slots and bingo which creates a distinct gaming experience. In Slingo, players spin reels similar to slots to reveal numbers, which they mark off on a grid resembling a bingo card. The aim is to complete lines or patterns for payouts or bonuses. Examples include Tetris Slingo, Starburst Slingo, and Britain’s Got Talent Slingo.

High volatility slots

Nowadays, game developers are making more slots with big wins but they don’t come often. Hacksaw Gaming has some very risky slots like Wanted Dead or A Wild, Cubes, Itero, and Chaos Crew. These games give players a chance to win big or lose everything. Other popular high-risk slots are Mega Moolah, Book of Dead, Gonzo’s Quest, Dead or Alive, and Bonanza. They’re known for giving out huge payouts to lucky players.

Online Slots Themes

Online slots are built around different ideas. Each game has its distinct look and story, appealing to different player preferences. Some popular themes include:

Adventure and Exploration

Slots with adventure themes often take players on exciting journeys to faraway lands and ancient civilizations. These games might include treasure hunts, jungle adventures, or grand journeys.


Mythology-themed slots draw inspiration from ancient myths, legends, and folklore from around the world. Players can see images of gods and goddesses, mythical creatures, and legendary heroes as they spin the reels.


Fantasy-themed slots transport players to magical worlds filled with wizards, dragons, fairies, and enchanted forests. 

History and Culture

Such slots remind you about different periods, civilizations, and traditions.  Players can experience the sights and sounds of ancient Egypt, medieval Europe and other historical places.


 Nature-themed slots celebrate the beauty and diversity of the natural world. You may see landscapes, animals, and plants while playing these types of casino games.

Science Fiction

These games may feature space exploration, space battles, or other sci-fi elements.

Movies and TV Shows

With such slots, players can relive their favourite moments from iconic films and TV shows while trying their luck for big wins.

Fruit and Classic

These games offer a retro gaming experience with simple gameplay and straightforward mechanics. Often you can see cherries, lemons, and lucky sevens on your screen.

These are just a few examples of the many different themes you can find in online slots. With so many themes to choose from, players can easily find games that match their interests.

We analyzed data from over 100 Irish slot sites over the past six months to identify the five most popular slot games among Irish players. Here they are.

Book of Dead

It is a popular online slot game developed by Play’n GO, one of the leading software providers in the iGaming industry. It was released in 2016 and quickly became a favourite among Irish players. The game’s theme revolves around Egyptian mythology, with symbols like pharaohs, Anubis, and Osiris appearing on the reels. Book of Dead is a high volatility slot, meaning that wins may be less frequent but tend to be larger when they occur. The main attraction of Book of Dead is its free spins bonus feature, which is triggered by landing three or more Book of Dead scatter symbols anywhere on the reels. 

Mega Moolah Slots

Mega Moolah is an African safari-themed slot game featuring colourful symbols of wild animals. The game’s cheerful and lighthearted atmosphere adds to its appeal. Mega Moolah is known for its huge online slot jackpots, setting world records with multimillion-dollar payouts that grab global attention.


Bonanza is set in a picturesque mining town in the American West during the gold rush era. The game’s backdrop features a scenic mountain landscape with a mining cart track running alongside the reels. Symbols on the reels include gemstones, letters representing playing card values, and mining-related items such as dynamite and pickaxes. Players might experience longer waits between wins, but they also have the opportunity for big payouts, especially in the free spins bonus round. Bonanza has had a big impact on online slots, inspiring many sequels and similar games from other developers.

Gonzo’s Quest

With an RTP of 96%, Gonzo’s Quest is one of Ireland’s most popular and rewarding online slots. The game has five reels, three rows, 20 fixed pay lines, and Mayan symbols. Winning combinations are formed by matching symbols on adjacent reels from left to right. Its animations and soundtrack add to the cinematic experience. 

Starburst Slots

It features a cosmic theme with sparkling stars and colourful gemstones as symbols. The game also includes classic slot symbols like “Bar” and lucky number sevens. One unique feature is the “Win Both Ways,” allowing wins from left to right and right to left. That doubles the winning opportunities. With low volatility, Starburst offers frequent but smaller wins. The game is perfect for casual players seeking regular payouts.

Fundamentals of How Slots Work

If you’re new to slots, first you should understand the basics of the gameplay. 

  1. Slots have columns with different symbols. When you spin, the columns turn and stop, showing symbols.
  2. To win, matching symbols must be on paylines. Old slots have one line, but new ones can have many.
  3. Before spinning, you choose how much to bet. 
  4. Random Number Generator (RNG) decides the outcome of each spin fairly. Each spin is separate and not affected by previous ones.
  5. To win, you need certain symbols in a row (depending on the game). 

Online Slots Software

Online slot software providers are companies that develop games for top online casinos. Some of the most well-known and respected ones are listed below.


NetEnt has set numerous records and their iconic Starburst remains the most popular online slot to date. The likes of Gonzo’s Quest and Fruit Shop are other timeless classics.

Pragmatic Play

With beautifully crafted games like The Dog House, Gates of Olympus and Buffalo King, Pragmatic Play treads a fine line between playability and volatility. Their online slots, while exciting and immersive, offer lower RTPs. 


Microgaming has been around since 1994 and has created the popular jackpot game, Mega Moolah, plus Book of Atem: WowPot, Wolf Call, and many more. Once the leading slots provider, Microgaming still boasts a vast library of top titles. 

Play’n GO

Based in Malta, this software provider is the creator of Rich Wilde and the Book of Dead, Reactoonz, Fire Joker, Mystery Joker, and more. It stands as a modern-day classic that has inspired hundreds of similar ‘Book of’ titles.

Big Time Gaming

Big Time Gaming has revolutionised slot development over the last decade, with innovative titles like Bonanza Megaways and Extra Chilli Megaways. This mechanic has now been licensed to other top software providers.

Blueprint Gaming

Most well known for their branded slots like Rick & Morty, Top Cat, Inspector Gadget and the King Kong Cash series of slots, Blueprint Gaming is the creator of the Jackpot King progressive jackpot pool which paid out more than €8m to a lucky player in 2021.


Playtech might be better known for creating titles for blackjack and online roulette sites, but it also creates lots of great slots like the Age of the Gods series, the fun Big Bad Wolf slot, and White King. 


This company creates various games like slots, table games, mini-games, and online poker. Their games have modern designs and an average RTP of about 96%. You can try demos of their slots on their website. 

Online Casino Bonuses Like Free Spins for Playing Slot Games

Best Irish online casinos offer exciting bonuses that players eagerly seek. Here, we’ll look at the different bonuses available at various online slot casinos in Ireland.

Welcome bonus

Online casinos use welcome or sign-up bonuses to attract new customers and give first-time users a boost. These bonuses are usually one-time offers. To claim a welcome bonus, you typically need to deposit money when you sign up.  The required deposit amount varies between sites. Keep in mind that these welcome bonuses often come with wagering requirements. These requirements determine how many times you must bet the free bet amount before you can withdraw any winnings.

Free spins

Free spins allow players to spin slot reels without using their own money. With No Deposit Free Spins, players do not need to deposit money. With Deposit Free Spins, players receive free spins upon making a qualifying deposit. In-game free spins are built into slot games and are given if players manage to get specific symbols.

No deposit bonus

This is a promotion from online casinos that give players free spins, free cash, free play or other rewards without needing to deposit money. For example, some bonuses offer free spins on specific slots, usually between 10 and 100 spins.

Cashback bonuses

Cashback bonuses come as a relief when you end up with nothing left of your deposited funds. They’re a type of promotion offered to refund players a percentage of their net losses. 

The cashback percentage varies depending on the casino, typically ranging from 5% to 20% or more. For instance, if a player loses $100 during a promotional period with a 10% cashback rate, they would receive $10 back as cashback. Some cashback bonuses may apply only to specific games or categories, while others apply to all games offered by the casino.

Matched deposit bonus

With this bonus, the casino matches a part of the player’s deposit, increasing their playable balance. The match percentage varies, usually from 50% to over 300%. For instance, if a player deposits $100 and gets a 100% match, they’ll receive an extra $100, making $200 in total to play with. Check the bonus terms to know which games count toward the bonus and how much they contribute.

Selecting the Best Irish Online Casino for Slot Gaming

We highly recommend playing slot games on the sites listed on this page. These sites are known for their safety, security, and excellent selection of slot games. However, if you prefer to evaluate online casinos yourself and choose the one that suits you best, here are some key factors to consider:

  • Ensure that the casino holds valid licensing from a reputable regulatory body.
  • Research the site’s featured game providers to assess the quality of their slot games.
  • Check if the casino has a diverse range of slots ( classic slots, Megaways, progressive jackpot games, etc.)
  • Try free-play demo games to test out different titles and evaluate their mechanics. and overall enjoyment.
  • Compare the various bonuses offered by the casino.
  • Test the quality of the casino’s customer support through live chat. 

If you’re satisfied with your impressions, consider creating an account with the online casino to gain access to their premium slot games.

Tips for Playing Online Slots in Ireland

To enhance your enjoyment and increase your chances of success, consider these valuable strategies and tips:

  1. Learn the basics before you start playing. Understand different slot types and key slot terms like paylines, reels, symbols, RTP and volatility.
  2. Choose the slot that suits your preferences.  Look for themes, gameplay, artwork, and sound effects that you find entertaining. 
  3. Take advantage of free spins, bonuses, and promotions offered by online casinos with slot sites. 
  4. Remember to play responsibly. Set a budget for slot play and stick to it. Also, consider setting time limits for your gaming sessions.

Important Terms to Consider 

Here are some most important terms relevant to slot games at online casinos:


A line on the reels where specific combinations of symbols must land to get you a win.


The vertical columns on a slot machine that spin and display symbols. Traditional slots usually have three reels, while modern slots may have five or more.


The images or icons that appear on the reels. 

Wild symbol

A special symbol that can substitute for other symbols to form winning combinations.

Scatter symbol

A special symbol that can trigger bonus features such as free spins, bonus rounds, or multipliers.

Bonus Round

An additional gameplay feature triggered by landing specific symbols or combinations. Bonus rounds often offer players the chance to win extra prizes or access special features not available in the base game.


A measure of the risk associated with playing a particular slot game. High volatility slots offer larger but less frequent wins, while low volatility slots offer smaller but more frequent wins.

Choose a slot volatility level that aligns with your preference.

Return to player (RTP) 

It represents the percentage of all wagered money that a slot machine is expected to pay back to players over time. Expressed as a percentage, RTP reflects the long-term average return to players. RTPs below 94% tilt towards the casino’s advantage over time. 


A feature that allows players to set a slot machine to spin automatically for a predetermined number of spins.

Wagering requirements (WR)

WR indicates the number of times you must bet the bonus amount to withdraw winnings. WRs often range from 20x to 50x the bonus value. Higher WRs can make it tougher to convert funds, while lower WRs, like around 25x, are better for players.

Withdrawal Limits

This is the maximum amount of money that a player can withdraw from their casino account within a day, week, or month. 

Highest RTP Slots 2024

Slots with high RTPs can improve your long-term returns. Yet, some players opt for lower RTPs for the chance to win large ‘max wins’ or progressive jackpots. Below are the top 7 highest-paying slot games in Ireland. While most online slots in Ireland usually have RTPs between 96%, these slots boast RTPs exceeding that threshold.

Mega Joker99.00%
Book of 9999.00%
Marching Legions98.12%
Blood  Sucker98%
Avalon II97%
Guns’N Roses96,98%

Online gaming and slots are fully legal in Ireland. There is a robust regulation governing the online gambling landscape, including slot games. Players can confidently indulge in these games on licensed and regulated casino platforms. To make sure a casino site is reliable, players can check if it holds a license from trusted regulatory bodies like the UK Gambling Commission or the Malta Gaming Authority. These accreditations guarantee strong data security and player protection.


Can I play online slots for free at Irish casinos?

At Irish casinos, it’s common to find free versions of slot games.  So, yes, you can play online slots for free and become familiar with their mechanics and features without risking your real money too. And also you can find online casinos that offer no deposit free spins.

Do Irish casinos offer any bonuses specifically for online slots?

Many Irish casinos offer bonuses tailored specifically for slot games like free spins or cashback. These bonuses are frequently included in welcome packages or ongoing promotional offers.

How can I verify the fairness of an online slot machine?

You should check if the casino is licensed by a reputable regulatory authority. Additionally, look for certification from independent testing agencies like eCOGRA or iTech Labs, which ensure that the game’s random number generators (RNGs) are fair.

Can I earn real money from online slots?

Although online casino slots rely on luck, many players regularly win substantial amounts, and a fortunate few even hit life-altering jackpots. 

Which online slot is the best to play?

There isn’t one perfect online slot game. You might like a slot with high payouts, free spins, or amazing graphics. Everyone has different things they look for in the best online slot.

How do online slot tournaments work?

In online slot tournaments, players compete to get the most points or winnings in a set time.