Play Slot games at Mr Green Online Casino Ireland

Register today and claim your €100 bonus and 200 free spins. The free spins are available for Book of Dead slot.

Our exclusive bonus is available for Irish players who are 18 years or older. The free spins and bonus features are subject to a 35-fold wagering requirement. Only given online slots can be played with the bonus money, and each game will contribute differently to fulfilling the wagering requirement. Frees spins are valid for 7 days from the activation date. Mr Green General T&C apply.

Online slot machines  at Mr Green

Variety, quality, and innovative experiences, Mr Green casino offers thrilling online gaming you won’t find anywhere else. If you’re looking for hundreds of award-winning slots that give you the sounds, colours, and excitement of an actual casino floor, Mr Green delivers it to the comfort of your own home. We offer over 800 slots for your gaming experience from some of the industry’s top providers: Microgaming, NETent, and Play’n GO. Every slot has its unique graphics, symbols, rules, bonuses and reels. Everything from set payouts to growing progressives is at your disposal for real money, depending on the type of game you choose. Just push the spin button and let the fun begin.

Popular Slots at Mr Green

If you’re looking for specific online slots to personalize your experience, Mr Green offers the games you know and love from the past and present. But if you’re overwhelmed by the wealth of slots we offer, you can always check out the ‘Top Rated’ section of the site. Below are some great games to start with that offer free spins, bonus features, and the chance to take home cash prizes:

  • StarburstWhat better way to start your gaming experience than with what many believe is the world’s most beloved online slot. Developed by NetEnt, it couples simplicity with modern twists like wild respins, a bonus feature, and vibrant graphics. Play and win up to 50,000 coins!
  • Book of Dead Developed by Play’n GO, set off on a fantastic crusade with adventurer Rich Wild to search for the Book of the Dead and its lost fortune. This slot has free spins, expanding wilds and some of the most lucrative bonus rounds you’ll find in a high-volatility game.
  • Lucky Mr Green Not only is Mr Green the face of our casino, but he has his very own exclusive slot. From Red Tiger Gaming, the famed ‘Lucky Mr Green’ leads you on twists and turns that bring you pocket watch multipliers, four different lucky bonus rounds, and up to 800x your bet in Mr Green’s Showtime Feature.
  • Katmandu Gold Venture high into the Himalayas in South-East Asia to play a slot from ELK Studios that offers 531,441 ways to win. It provides fantastic features like a Multiplier Free Drops bonus game, Big Symbols, and an Expanding Win to play your way into an avalanche of riches.
  • Wolf Gold Play in the flat grasslands of North America with this slot from Pragmatic Play. Wolf Gold offers stacked wilds and the Blazing Reels Free Spins feature, where reels 2, 3 and 4 spin together as a giant symbol. Play for a jackpot worth 1000x your stake.
  • Bonanza Created by Big Time Gaming, this slot has you searching in the mines during the California Gold Rush for scatter symbols, free spins, and multipliers. Each reel alone or with a cart can give you 117,649 Megaways to win!
  • Gonzo’s Quest Developed by NetEnt, Venture to the year 1541 where you and Captain Gonzo search for Aztec treasure in this 3D slot. Play five reels, 20 paylines, an Avalanche multiplier that can grow to 15x, and a jackpot that’s 2,500x your stake!
  • Extra Chili Keep things spicy with another Megaways slot from Big Time Gaming. Extra Chili gives players 117,649 Megaways to cash in and up to 20,000x your bet. Burn up the slot with three scatters that spell ‘HOT’ and start triggering free spins.
  • Fishin’ Frenzy – Get your reels ready for this popular fishing-themed slot game created by Blueprint. A favourite due to immersive graphics, fun features and lots of fun.
  • Eye of Horus – Be taken back into the past and join the ancient Egyptian gods for some mystery and fun. Another popular collection created by Blueprint you can’t go wrong with.
  • Ted – A family favourite film transformed into a fun slot game. This collection is provided by Blueprint to bring you top of the line graphics, animation, music and features.

Types of Slots at Mr Green

If you have a certain kind of online slot you enjoy, you’ll find what you’re looking for with Mr Green. Here are some of the different styles and genres we offer:

Classic Slots

Looking to return to the classic days of fruit-filled slot machines at land-based casinos? Mr Green’s Classic Slots are for you. These games are just like the one-armed bandits of old: simple play, simple symbols, and straightforward wins. You’ll find games like Super 7s, Burning Diamonds, and Super Sevens & Fruits to give you that classic feel.

Newest Slots

Mr Green excels at offering some of the freshest slots on the net as we’re always updating our site with new releases. Our Newest Slots are always on the cutting age of gameplay and graphical quality. Best of all, they’re backed with free spins, bonuses, and opportunities to cash in.

Top Slots

When it comes to Top Slots at Mr Green, they’re our best for a reason. You’ll find simple gameplay combined with excellent graphics to ensure you enjoy every spin. Be sure to view the list of our best slots to see some of our most cherished games.

Fun at Your Fingertips

If you prefer to play on the move, Mr Green has slots to ensure that experience is as fun as when you’re sitting at home. You can enjoy our online slots using your Apple or Android mobile device, and you don’t have to download any apps to play. Every game is optimized and intuitive to ensure you’re immersed in a gaming experience that feels like you’re relaxing at your favourite land-based casino. Play hundreds of Mr Green casino games at the park or public transit; it’s all at your fingertips with our Mr Green app.

How to Play Online Slots

Playing an online slot game is pretty straightforward. All you need to do is set your preferred wager per spin and let’s get the party started! It’s worth noting that each slot game will have its own gameplay and set of winning combinations. More often than not, you’ll need to match at least three of the same symbols on any active payline – but, this is wholly dependent on the type of slot game you’re playing. A slot game is all about luck and probability, so your playing behavior won’t necessarily determine the game results. However, as a general rule of thumb, you want to play those slots you’re familiar with, especially when playing for real money.

Slot Game Paylines

What are Paylines?

Paylines or winning lines are the patterns on the reels that the matching symbols appear on before you can win a bet. Paylines can be horizontal, vertical, diagonal, or zig-zagged, depending on the slot game’s design. Some slot titles will have as little as 5 paylines while some will have up to 250 paylines. For specific slots, you choose the number of paylines you want to play with, while in some others, the system automatically decides the paylines. The more number of paylines the game has, the higher the wager for every spin.

Slot Game Betting

How to determine the stake

There are several ways you can choose your stake for every spin. Different slots will offer varying techniques for selecting the bet value. Some allow you to change the coin value per spin, while in others, you determine your wager by picking a given number of paylines to play with. This way, you can customize the playing experience to suit your unique needs.

Slot Game Paytables


A paytable gives you all the information you need to know about the game’s winning combinations and the list of payouts for every possible winning sequence. To find out all this important data, you’ll need to click on the information button, often given in the form of a question mark or wrench symbol. Clicking on either of these navigation tools will take you to a page where you’ll find the basic game rules and how bonus features work. You can also compare the various game symbols and find out how the wild and scatter symbols affect the gameplay.

The Different Symbols In Online Slot Machines

Online slot games come with symbols that often match the theme. There are also certain symbols which, when they appear on the paylines, guarantee bonuses or free spins. These special symbols can also increase the potential wins per spin or trigger varying multipliers. Below are the common special symbols you’ll find when playing online slots.

Slot Game Wild Symbol

Wild symbols

A wild symbol is a symbol that substitutes for all the other symbols except the scatter symbol. If, for example, you need to match five symbols in an active payline, but instead match only four symbols and a wild symbol, the latter substitutes for the fifth symbol to give you a win. Most slot games will have special wild symbols besides the ordinary wild symbol. Special wild symbols can be any of the following:

  • Sticky Wild – This is a wild symbol that remains on the reels for more than one spin.
  • Stacked Wild – A stacked wild symbol covers a whole reel when it drops. It usually comes in bands of 2, 3, 4, or 5 symbols. This symbol increases the chances of creating a winning combination. Certain slot games have the stacked wild symbols appearing on specific reels.
  • Expanding Wild – This is a wild symbol that extends over the reels. It appears beyond its single symbol location and creates better chances of winning combination.

At times, wild symbols can multiply your win or trigger lucrative bonus rounds.

Slot Game Scatter Symbol

Scatter symbols

These are symbols, which, when they appear on the reels, can lead to big wins. Scatter symbols can trigger bonus rounds, give free spins, or both – depending on the slot game. Most slot games will reward you with free spins if you get three or more scatter symbols on the reel. The more the number of scatter symbols, the more free spins you get. These bonus rounds can increase your chances of winning more free spins and recurring bonuses.

Choosing an Online Slot Game online

Tips for Choosing the Right Slot Title

Online slot games are a favourite pick to most players, thanks to their intriguing themes, simple gameplay, and decent payouts. If you’re looking to better your playing experience, you would want to choose a slot game that best fits your playing style and budget. Some slots payout less often but with bigger payouts, while others pay less, but more frequently. The difference in payout frequencies is called slot volatility. You can choose to play either a high or low volatility slot game.

A high volatility slot means higher risk and is best suited for players who rather win big when luck falls on their side. A low volatility slot gives smaller winnings and is best for someone looking to play for a more extended period of time. A medium volatility slot falls in between and is a good pick for someone on a budget.

Information on the slot’s volatility can be found in the paytable. A typical low volatility slot will payout 250 coins with its highest paying symbol. However, a high volatility slot will pay up to 10,000 coins with its highest paying symbol.

Another aspect you would want to consider when picking an online slot is the RTP or the return to player percentage. This is the average amount a slot can payout for every €100 bet. If a slot game has an RTP of 95%, it means the average payout per €100 wager is €95 – subject to an extended period of play.

Online Jackpot Slots

What are online jackpot slots?

Jackpot slots often promise massive payouts. There are two types of jackpot slots – fixed and progressive jackpots. The payout amount is set for a fixed jackpot slot, while for a progressive slot, the payout increases as you continue to play until one player hits the jackpot and wins the entire amount. The payout could be in millions of euros, depending on the type of slot.

When playing a progressive jackpot slot, a given percentage of the wager goes to the jackpot. Often, progressive jackpots are linked between multiple online casinos, making the jackpot amount grow significantly within a short time. In some cases, one online slot can have mini, maxi, and mega jackpots. This means that 3 players can win the different jackpot amounts in one game.

Online Slot Game Myths

Online Slots Myths

Perhaps one of the common myths about online slots is that a slot will pay out more when hot and less when cold. Since each spin is entirely independent of the previous one, an online slot cannot go through the cold and hot phases.

Another myth is that you can’t win jackpots progressively. Many people believe that it will take a significant amount of time to win the next prize. This isn’t the case. Each turn has the same amount of chance of winning the jackpot.

Key Takeaways to Playing Online Slot Machines

Below are some essential tips to consider when playing an online slot game:

Stick to your budget 

As a general rule of thumb, never go past your limits. Only put in what you are willing to lose.

Don’t chase losses 

When playing an online slot game, don’t bring feelings into play. Trying to chase losses or looking for a comeback spin may frustrate you in the end. Make it fun and adventurous – enjoy every spin.

Play for free first

Before playing for real money, start with demo slots to get the hang of the game. Or as they say, date before you marry!

Choose your slot machine carefully.

There are several online slot games available. You are sure to find one that picks your interest and suits your budget at Mr Green Online Casino!