User Notice For your safety, we only recommend casinos that are regulated by UK's Gambling Commission.

A Game Guide for Slots

SlotsSlot machines are one of the most popular games found at casinos, and they’re just as popular online. However, online slots differ slightly from those found at land-based casinos.

Most online slot machines feature exciting gameplay mechanics and jaw-dropping graphics. Some licensed games even feature your favourite television or films characters! But how do you play slots? We can help you with that, just take a look at our online slot machine guide.

Recommended Slot Casinos
CasinoPayoutBonusOur RatingPlay Now
Mansion Casino logo 97% Return to player £200 Terms 1011 reviews Play Now
Roxy Palace Casino logo 96% Return to player £100 Terms 1132 reviews Play Now
Betway Casino logo 95% Return to player £1000 Terms 870 reviews Play Now
Casumo Casino logo 96.95% Return to player £300 Terms 1472 reviews Play Now
PlayFrank Casino logo 98% Return to player £100 Terms 513 reviews Play Now

Slot Machine Basics

Slot machines date back to 1899 when Charles Frey invented the Liberty Bell in New York, one of the first-ever slot machines. The Liberty Bell featured three spinning wheels containing a total of five different symbols including horseshoes, diamonds, spades, hearts and a Liberty Bell.

Over time, however, the slot machine changed, resulting in the first fully electro-mechanical slot machine created by Bally Manufacturing in 1963, the Money Honey became the first slot machine. By this time, however, the slot machines had fruit symbols on them and had become a hit with gamblers.

Slot games eventually joined online casinos when casino software provider Microgaming launched their very own online slot game named Cash Splash in 1998. Microgaming and its slot game paved the way for the game available today.

Today, slot machines are still highly popular and have come a long way. Online slot games offer new ways to play, more paylines amazing animated graphics or animations and slots based on recent Hollywood blockbusters, but more on that later.

There are actually three different types of slot games, they are Classic Slots, which play with the traditional three-reel fruit slots, Video Slots, which feature five-reels or more along with illustrations and animations, and progressive slots, a large jackpot that continues to increase as the user plays.

How to Play Slots

The aim of slot games is to match a certain number of symbols to win. At traditional casinos, all you need to do is push a button and pull a lever after sliding some money into the machine’s dispenser. And online, it really isn’t that much different.

Online, you make your payment, bet on whichever payline you want and simply press the ‘Spin’ button to get the game going. After hitting that giant button, the reels will spin shortly and then stop before any winning combinations are paid out.

Hang on, what’s a payline?

Paylines, Scatter Pays & Bonus Events

Winning in slots depends entirely on paylines and how symbols fall on them. A payline is basically a betting line where, if a correct number of symbols fall on, can lead you to win. When slot machines first appeared, there was only one payline.

Now, however, online slot machines feature a large number of paylines depending on the number of reels, though most games include somewhere between 25 and 30 paylines.

Paylines can go in either direction and can be straight, diagonal, zig-zag or run across reels. You win by matching a correct number of symbols on paylines. However, some modern-day slot machines feature scatter pays, designated symbols that trigger a payout even if they aren’t on a payline.

Other online slot machines may feature bonus events, which can either be extra spins or a second bonus screen. Whenever players are presented with a bonus screen, players are offered the chance to play another game that could issue a payout.

Betting on Paylines

Now, before hitting that ‘Spin’ button, you should set the bet size and number of paylines you want to play with. For anyone wanting to start with smaller bets, you’ll find some bets can start for as little as a penny.

After that, you should select how many coins you want to bet on a particular line. You then select how many paylines you want to play with and then bet on one or the maximum available by clicking them on the side of the game.

Slot Machine Gameplay: Extra Symbols & Features

In addition to the normal symbols that appear on slot machines, there are special icons that offer players the chance to win more. For example, Wild symbols replace other symbols on the reel, making it easier to win. There are also Scatters symbols, which we’ve explained above, as well as Multipliers which multiplies payouts.

Online Slots

On top of that, there are extra gameplay features. These include extra spins, which offers players an extra bonus round, bonus games, which feature instant-win prizes or interactive games, and a gambling feature, which allows players to double their payouts with a game of chance.

In addition, a Pick ‘em Bonus occurs when the player hits three Scatters. Users will then be taken to a separate screen and will be prompted to choose from a selection of different symbols that each offer a different prize or multiplier. Players will be asked to keep clicking symbols until a ‘Collect’ icon appears.

A Click Me Bonus is triggered when three bonus symbols appear on the reels at the same time. Players will be asked to choose one of three icons to reveal a cash prize.

The availability of these extra symbols and gameplay features depend on the slot game you’re playing and the game’s casino provider.

RTP & RNG

RTP and RNG are two important abbreviations players should remember when playing slot games.

RTP stands for Return to Player and basically means the payout percentage for each game. It varies depending on the game and developer. The most common RTP of online slots is 96%, though some games may go up to 98%. Meanwhile, real casino slot machines tend to have an RTP of 80-90%.

Meanwhile, RNG, which means Random Number Generator, is the system responsible for the game. The outcome of each round is based on a random number provided by the RNG, which tells the reels when to stop.

Best Mobile Slot Games

Now that you know how to play mobile and online casino slots, we think you’re ready for the real thing. If you’re looking to play slots, check out our list of the best mobile slot games of this year. We are regularly updating our list so check back often to avoid missing out on thrilling new games and special bonus offers.