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Play Online Slot Machine Games for Free or for Real Money

From dodgy backstreet games dens to the petrol station, there used to be a time when slot machines were almost ubiquitous on the high street.

They’re not so prevalent nowadays due to law changes and the like, but there is still a healthy appetite for slot games both in land-based casinos and online.

Slot Meaning

An online slot machine is one of those things that, on the face of it, shouldn’t really work. The beauty of the old fruit machines was actually putting your penny in the slot and cranking the arm to set the reels in motion, before standing motionless – tongue out, focused – as you waited and hoped for them to land and display a winning combination.

But they definitely do work, thanks to the inventiveness and imagination of some fantastic casino game designers.

In days of yore, the symbols used on slot machines were your classic cherries, lemons, bells, lucky number sevens and the favourite: the BAR symbol. Today, online slot games take their inspiration from the worlds of movies, TV, sport, history, mythology and a whole bunch of other source material to deliver titles that are, in many cases, an absolute joy to behold.

Here at Paddy Power Casino, we offer stacks of slots suited for all tastes and budgets. Fire them up on your laptop, mobile or tablet, and you could be winning big cash prizes before you know it.

What Are Online Slots?

One of the great things about online slots compared to the old-school "penny slots" your grandparents used to play, is that the player has so many more options.

Back in the day, all you could do was stuff your coins into the slot, pull the arm and hope for the best. However, today, video slots give you a range of choices to make that start before you’ve even clicked the spin button.

With all online slot games, you can decide exactly how much you want to stake per spin, and with many titles you can alter how many paylines are active on your reels too; the more lines, the higher your stake but the greater your potential payouts.

Vintage slot machines would whir into life and create all sorts of clanking sounds, like C3PO mistakenly being put through the washing machine by mistake instead of Bobba Fett’s tunic. In the case of online casino slots, though, the action is seamless - and, in the case of our licensed movie and TV slots, you might just see and hear bursts of video and audio taken from the original franchise instead.

Reels spin, reels stop, player wins or doesn’t: that was the formula for your typical slot machine.

However, players are taken on a whole new voyage of discovery with the best online slot games. These incorporate bonus features, free spins rounds and fun side games to keep players on their toes, and the level of interactivity seems to be increasing with each set of new games released on the market. 3D slot machines on the internet? You’d better believe it!

Best Online Slots in UK and Ireland

Of course, not all slots are born equal. Some are better than others, and that’s why here at Paddy Power Casino we pride ourselves on being one of the best slot sites in UK and Ireland, because we handpick the toppest of the top games for our players to enjoy.

How do we define the best online slots? That’s easy enough: we’re looking for immersive gameplay, a range of bet options and fantastic potential payouts. And if that’s all wrapped up in a title that looks great and has a funky soundtrack, that’s the icing on the cake.

Browse our library and you’ll find the best online casino slots in the business. You’ll find progressive jackpot slots where the prize fund often runs into the millions - Age of Gods, Pharaoh’s Treasure and Gladiator, to name but a few.

For more traditional gameplay, why not try the likes of the Great Blue slot, Hot Gems and Berry Berry Bonanza, which is so good they named it twice (sort of)?

To play Bonanza slot online, and the rest of our collection for that matter, all you need to do is sign up for a new player account today and head to our slots lobby.

Top Slot Games

When only the finest slots will do, why go anywhere else other than Paddy Power Casino?

From classic games to the latest releases, our slots library is continuously updated to ensure that you, our eager-eyed and nimble-fingered player, are kept on your toes every time you visit the site.

As such, we’re stacked out with the top slot games. From the bareback antics of Plenty of Fortune and Frankie Dettori slots to the cape-wearing, crime fighting activities of the Justice League slot, you can rest assured that our titles carry the best online slots payout percentages to ensure each and every spin of the reels has a chance of being "the one".

If it’s top slots you’re after, you’ve come to the right place.

New Slot Games

Hungry for the latest slot games releases? Paddy Power Casino has got you covered.

We’ve compiled a collection of the finest new online slots sourced from the best software developers in the game, including the very best from Playtech and some Paddy Power exclusives. 

We’re particularly interested in those instant classics such as Coin! Coin! Coin!, Big Bear and Galactic Streak. They’re the new slot machines you play for the first time and think "yep, this will do me very nicely, thank you very much".

There are few things as satisfying as firing up new casino slots on your desktop or mobile device, and we’ll help you enjoy that sensation as many times as you want to.

Online Slot Machine Rules

To prevent the world of fruit machine gaming descending into a lawless farce and make the gameplay truly entertaining, there are some rules that must be followed. 

But these are all straightforward enough to follow, and you can learn more by reading the individual rules relating to each fruit machine game in the paytable.

And, before you ask, there is no golden rule on how to win on fruit machines! If we had a cent or penny for every time we were asked that… There are, however, a few good strategies which you might want to read up on - continue reading this guide to online slots to discover them.

How to Play Slot Machines

The process of playing your favourite slot machines is a breeze. Want to know how to play online slots?

First, decide how much you want to stake. This is often displayed as "bet per line", so if there are 20 active paylines and you're betting 1 credit per, your total stake for that spin is 20 credits. You can adjust this accordingly using the up and down arrows on the game’s controls.

Once happy, all you need to do is hit that big juicy spin button. The reels will be set into motion, and after a knee-trembling wait will finally come to a halt displaying their symbols. If you have matched a winning combination, you will be informed of which payline the triumph has occurred on and how much you have won.

Some fruit machine games feature unique characteristics following a win. The winning symbols might collapse or disappear to be replaced by others, and once again winning combos can appear and "multiplier" wins achieved. Other slots might take you on journeys to special bonus rounds, or offer up free spins to be enjoyed.

"But is there a way how to tell if a fruit machine is going to pay out?", we hear you ask. Nope, unfortunately not.

But here’s a tip: online slots with a high Return To Player (RTP) rate tend to pay out more often, albeit smaller wins than lower RTP games which are considered of higher variance.

Easy Slots and Demos for Beginners

The easiest slots for beginners are those which offer only the most basic of functions.

Like in the arcades of yesteryear, these online fruit machines simply require you to slip your coin into the spot (virtually speaking), hit the spin button and wait to see if you have matched three or more of the same symbol on a payline.

Those casino slots are the most basic, and if you are a complete newb, as they say, then you can always enjoy the demo slots at Paddy Power Casino games; you won’t have to spend any of your own cash in order to get involved.

Slot Machine Strategy for Advanced Players

If you’ve had plenty of chance to play slots for fun, and now want to up the ante with real money gaming, now’s the time to get tactical.

Okay, so there is no discernible strategy to securing slot wins: They're a game of chance, after all. But there some tips worth following.

If you love the sensation of winning – who doesn’t? – then the highest RTP slots are the best way for you to play. These games do pay out less often than their low RTP counterparts. However, if you are the patient type willing to sit around and wait for a big win, these risk and reward style slots could be for you.

Other bits of boring advice, the kind your mother might give you, relate to bankroll management and, specifically, avoiding tilt: the poker term for losing your rag after embarking on a losing streak. If you are a passionate soul, sticking to a set bet amount per spin, no matter what, is a smart strategy. If you're not sure, it might be time to take a break from playing for a few hours.

Play Slots Online for Real Money

The thrill and anticipation of waiting for the reels to land in position is surely one of the most exhilarating experiences in online gaming.

Play slots online, win real money: is it any wonder that these simple games, which date back decades, have retained their popularity after making the leap from the high street to the world wide web?

The emphasis when playing real money slot machines should still be on fun; it is supposed to be a hobby rather than a part of some dastardly plan to take over the world one payout at a time.  You’ll win some, you’ll lose some, and while there are millionaires being made by progressive jackpot slots, you shouldn't feel like your wins are guaranteed - they're not, and we have to make this very clear.

If your luck’s in, it's happy days.

Online Slots Gambling

From Hollywood movies to top sporting action, there are almost no bounds for slot game developers in coming up with ideas for their titles.

UK online slots come in all shapes and sizes, and there is surely something for all tastes at Paddy Power Casino no matter how fussy you might be.

You can hit us up on your laptop, your desktop computer or your mobile/tablet, with casino slots for Android and iOS being our speciality.

Slot Machines Odds

There is no simple way to calculate the odds of a slot machine, but we can use the RTP as a simple way of explaining how a game works.

Let’s say that an online slot’s RTP is 95%. That tells us the game will gobble up 5% of all bets placed, but pay back 95% to players at various times.

Does that mean that if you wager 100 credits, you’ll get 95 credits back? No, because the RTP is theoretical, which means that if you played an infinite number of times, you would get 95% of your stake back. But on your next session at our slots lobby, you could outdo that win or you may end up recouping a lower amount. It's the nature of the beast.

For this reason, players tend to disagree on the best slots to play. Which are for you? High RTP games where the wins are more regular or lower RTP, higher variance titles where you could win bigger sums?

It’s like a metaphor for life, if anything!

Online Slots RTP

The best payout, undoubtedly, are those linked to a progressive jackpot network. That’s because all players, from across the globe, pay into the prize kitty, thus pushing it higher and higher until it is won.

Here at Paddy Power we have lots of jackpot games for you to sink your teeth into, as well as those at the lower end of the slots RTP spectrum. 

Remember, Paddy delivers… however you like it.

Free vs Real Money Online Slot Machines

Why do you play slot games?

Apologies for the directness, but it’s always interesting to hear players’ motives for firing up the reels.

If you play slots for fun, clearly your enjoyment just comes from passing the time and experiencing a few wins even if there’s no tangible reward at the end. You enjoy the graphics, gameplay and storylines, and you're in luck, because we have tons of great titles in our lobby.

If you play slots for real money, then you are looking to win cash prizes to go along with your enjoyment of the action on screen. 

The good news is that at Paddy Power Casino we offer a bit of both: A section featuring all free slots that you can play in demo mode, as well as literally hundreds of real money slots that offer payouts big and small.

Online Slots Welcome Bonus

It’s not as if you should need any further persuading, but just in case you do, don’t forget that at Paddy Power Casino you can trouser a handy welcome bonus to use on our slots library.

As if that wasn’t enough, there’s also a handy suite of ongoing promotions which will make your day that little bit brighter too. 

The only thing that's left is to make your first deposit and choose which slot you're going to play. Good luck!