Online Slots: Best Irish Casinos

New sites added January 2023

Everyone knows that online slots are one of the most popular types of casino game. But how do you know which slot casino is best for you? That’s where we come in. Our expert casino team review Irish licensed casinos, checking for the latest games and slot software, generous welcome bonus packages, mobile gaming, high RTP slots – plus excellent security and stellar reputation. Pick a highly rated casino from our shortlist below, or scroll down to view our favourite slots of this month.

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Top Online Casinos for Slots - January 2023

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TopRatedCasinos.ie is dedicated to helping customers find the best place to play online. Your safety and well-being is a priority, which is why all of our expert casino reviews are 100% honest and unbiased, and we highlight the key terms and conditions of every casino bonus we advertise. Whilst we accept commission from the casinos on our list of recommendations, and this may affect where they’re positioned on our lists, we only recommend casinos that we truly believe are safe and fair. Of course, we can’t rate and review every casino site, but we do make sure that only the best Irish-licensed casinos make it onto our lists.

TopRatedCasinos.ie is dedicated to helping customers find the best place to play online. Your safety and well-being is a priority, which is why all of our expert casino reviews are 100% honest and unbiased, and we highlight the key terms and conditions of every casino bonus we advertise. Whilst we accept commission from the casinos on our list of recommendations, and this may affect where they’re positioned on our lists, we only recommend casinos that we truly believe are safe and fair. Of course, we can’t rate and review every casino site, but we do make sure that only the best Irish-licensed casinos make it onto our lists.

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  • SIGN-UP BONUS
  • USER RATING
  • SCORE
  • PLAY NOW!
  1. Spinia
    1

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    More info
    New Customer Offer

    100% up to €100 on first deposit and 25 free spins for Hotline. 50% up to €150 on second deposit and 25 free spins for Turn Your Fortune.

    pay €100, play with €200

    18+ Please Gamble Responsibly. Click 'Claim Bonus' to view full terms and conditions

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    831 user ratings

    9.8
    Our score
    9.8
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  2. 22bet 22bet
    2

    WELCOME OFFER

    100% Up To €300

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    pay €100, play with €200

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    469 user ratings

    9.6
    Our score
    9.6
    18+ Please Gamble Responsibly. Click 'Claim Bonus' to view full terms and conditions
  3. Betamo Betamo
    3

    WELCOME OFFER

    150 Free Spins + €300 Welcome Bonus

    More info
    New Customer Offer

    To claim any of the deposit bonuses, the minimum deposit is EUR 20. All deposit bonuses and free spins have to be wagered x40. To activate a bonus, the bonus code given in the bonus description must be used when making a deposit. Free spins on the first deposit are provided as 20 per day for 5 days. To get the free spins, you must wager the deposit amount x1.

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    645 user ratings

    9.6
    Our score
    9.6
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  4. 4

    WELCOME OFFER

    100% Up To €100 + 25 Spins

    More info
    New Customer Offer

    The minimum qualifying deposit for this promotion is €15. Deposits via Skrill or Neteller shall not be qualifying deposits. You must wager the amount of deposit bonus forty (40) times on eligible games before you can withdraw your bonus funds and any winnings from them.

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    795 user ratings

    Expert Review
    9.5
    Our score
    9.5
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  5. Boo Casino Boo Casino
    5

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    1st DEPOSIT BONUS: 200% bonus up to €200 and 20 Free Spins. 2nd DEPOSIT BONUS: 50% bonus up to €100 plus 50 Free Spins. 3RD DEPOSIT BONUS: 100% bonus up to €200 with 30 Free Spins added on.

    pay €100 play with €300

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    612 user ratings

    9.4
    Our score
    9.4
    18+ Please Gamble Responsibly. Click 'Claim Bonus' to view full terms and conditions
  6. 6

    WELCOME OFFER

    100% Up To €200 + 25 Spins

    More info
    New Customer Offer

    €20 min deposit, excluding deposits by Skrill or NETELLER • Get 100% up to €200 Bonus and 25 Free Spins [FS] • FS valid on selected games & expire in 14 days • FS wins credited in bonus • Bonus wins are capped at €500 • To withdraw bonus & related wins, wager 30 x (bonus amount) within 90 days • Wagering req. vary by game • This offer may not be combined with any other offer • Deposit balance is available for withdrawal at any time

    Pay €100, play with €200

    18+ Please Gamble Responsibly. Click 'Claim Bonus' to view full terms and conditions

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    1947 user ratings

    Expert Review
    9.4
    Our score
    9.4
    18+ Please Gamble Responsibly. Click 'Claim Bonus' to view full terms and conditions
  7. Sport Nation Casino Sport Nation Casino
    7

    WELCOME OFFER

    100% Up To €500

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    New Customer Offer

    Deposit up to €500 using the deposit code SNC500. 100% immediately credited Bonus on your deposit amount up to €500! Turnover requirement of 35x the combined value of your deposit and Bonus amount on slots games & 70x on table games.

    pay €100, play with €200

    18+ Please Gamble Responsibly. Click 'Claim Bonus' to view full terms and conditions

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    529 user ratings

    9.3
    Our score
    9.3
    18+ Please Gamble Responsibly. Click 'Claim Bonus' to view full terms and conditions
  8. 8

    WELCOME OFFER

    100% Up To €500 + 120 Free Spins

    More info
    New Customer Offer

    Excluding UK residents. Minimum deposit €10. Free Spins are valid only on Starburst and expire in 7 days. 10x wagering apply. Certain deposit types are excluded. T&Cs apply.

    pay €100, play with €200

    18+ Please Gamble Responsibly. Click 'Claim Bonus' to view full terms and conditions

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    832 user ratings

    Expert Review
    9.2
    Our score
    9.2
    18+ Please Gamble Responsibly. Click 'Claim Bonus' to view full terms and conditions
  9. 9

    WELCOME OFFER

    €1200 Welcome Bonus + 100 Free Spins

    More info
    New Customer Offer

    First Deposit: On your first deposit, we’ll add an extra 100% up to a maximum of €500. You’ll also get 50 free spins as an added bonus! Second Deposit: On your second deposit, we’ll credit your account with an extra 50% up to a maximum of €200. Third Deposit: On your third deposit, you’ll receive a massive 125% up to a maximum of €500 – along with another 50 Free Spins to play with!

    pay 100, play with €200

    18+ Please Gamble Responsibly. Click 'Claim Bonus' to view full terms and conditions

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    932 user ratings

    Expert Review
    9.1
    Our score
    9.1
    18+ Please Gamble Responsibly. Click 'Claim Bonus' to view full terms and conditions
  10. Bob Casino Bob Casino
    10

    WELCOME OFFER

    140 Free Spins + €500 Welcome Bonus

    More info
    New Customer Offer

    Minimum deposit EUR 20. All deposit bonuses and free spins are subject to wager x40. In order to activate a bonus, you need to make a deposit using the bonus code mentioned in the bonus description. Free spins for the first deposit are provided as a series of 25 free spins per day for 4 days.

    18+ Please Gamble Responsibly. Click 'Claim Bonus' to view full terms and conditions

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    812 user ratings

    9.1
    Our score
    9.1
    18+ Please Gamble Responsibly. Click 'Claim Bonus' to view full terms and conditions

What Makes a Great Online Slot Game?

With so many casino slots to choose from, it’s helpful to know the key features that separate good slots from great ones. We’ve explained the three key areas that our review team focus on as they test each online slot on the market.

Slot software
Most online slots are created by a handful of well-known game developers. The best slots tend to come from companies like NetEnt, Microgaming, IGT, Thunderkick, Playtech and more. Rest assured – the casinos on this page offer slots using only the best software!

Bonus features
Many online slots offer a range of features designed to make the game more interesting and to create additional ways to win. Keep an eye out for bonus rounds, multipliers, free spins, and even progressive jackpots. You’ll find all these available at our top casino picks.

High RTP (return to player)
All slot games have different probabilities of paying out, expressed in percentage terms as an average return to player (RTP). The higher the percentage, the more paid out by the casino.

History of Online Slots

As popular as land-based slots are, their online casino counterparts have become even more popular. Arriving in the late 1990s with the advent of the internet, online casino software providers were quick to take advantage of the opportunities the internet offered. This meant slot games became available not just for those who visited casinos, but also for anyone who had access to a computer and internet connection.

With the rapid advancement of technology over the last two decades, more people than ever before have access to the internet and online casinos. In fact, hundreds of these sites are now dedicated entirely to offering their players ‘slot only’ platforms for them to play on. Today’s online slots have also improved considerably in quality, from their features, to their graphics and giant jackpots!

In recent years, the latest development for online slots has been the transition to mobile and tablet devices. Technological advancements mean that now players are able to enjoy playing slot games not only in their homes, but also whenever and wherever they want.

Big Slot Winners

Modern online slots offer some incredible jackpots for players to play for. Here are just a few of the biggest slot winner stories for you to enjoy!

2015 was a big year for British soldier John Heywood, who became an overnight multimillionaire after winning over £13.2 million on a 25p stake on Microgaming’s Mega Moolah. As well as all the money, the win also earnt John a Guinness World record, and even Microgaming’s CEO Roger Raatgever congratulated him on the win.

A world record was set in 2013, when one lucky player living in Scandinavia placed a 25 cent bet on Net Entertainment’s Mega Fortune and took the €17,861,800 jackpot. The winner said the win was such a surprise that he laughed and cried at the same time.

Another big win in 2016, this time notable because it was the largest progressive jackpot that has ever been won on a mobile device. The player’s identity was never revealed, but they hit an impressive €7.9 million on Mega Moolah from their iPad. Adding to their luck, the player had just signed up to Zodiac Casino’s 80 Chances to Become a Millionaire offer, which required a deposit of only £/$/€1.