Slot Machines Online 2018 – Best Guide to UK Online Casino

We can name a few things that are loved universally: beers, puppies, contact sports and…slots. It is hard to find a person who has not indulged in the pastime at least once in their life. Perhaps the simple, fun nature of the enterprise makes it a very attractive activity; something you just cannot refuse.


You place your bets, pull the levers and then hope for your luck to shine. If you get matching symbols, then you could conceivably walk away a millionaire. Follow the slots guide here to find out more.

18+ | T&C's Apply

18+ | T&C's Apply

Opt-in required. 18+ only. New customers only. First two deposits only. Maximum bonus is £250, plus 100 bonus spins. Bonus spins valid on select slots. Wagering Requirement of 45x Bonus Amount. Max bet £5 per bet. Max conversion £1,000. Neteller / Skrill deposits not permitted. Bonuses expires after 7 days. Full Terms & Conditions apply.

100 Spins
£250 Max Bonus
18+ | T&C's Apply

18+ | T&C's Apply

3 Spins
£200 Max Bonus
18+ | T&C's Apply

18+ | T&C's Apply

£50 Max Bonus
18+ | T&C's Apply

18+ | T&C's Apply

111 Spins
£998 Max Bonus
18+ | T&C's Apply

18+ | T&C's Apply

50 Spins
£650 Max Bonus
18+ | T&C's Apply

18+ | T&C's Apply

22 Spins
£222 Max Bonus
18+ | T&C's Apply

18+ | T&C's Apply

120 Spins
£4 900 Max Bonus
18+ | T&C's Apply

18+ | T&C's Apply

100% up to £100, 40x wagering, max win £1, 000, claim period 14 days New customers only. Min £10 dep. Neteller/Skrill excl. Wagering 40x on bonus amount within 7 days. Bonus max win £1,000. Max 20 spins per day. Spins max win £100. Bonus max bet £5. Game weighting and restrictions apply.

100 Spins
£100 Max Bonus
18+ | T&C's Apply

18+ | T&C's Apply

150 Spins
£50 Max Bonus
18+ | T&C's Apply

18+ | T&C's Apply

50 Spins
18+ | T&C's Apply

18+ | T&C's Apply

Welcome offer is only available to new Players on their first deposit. UK players are excluded from this offer. Minimum Deposit of €20 is required. Winnings from Zee Spins are capped at €50 per deposit. Bonus must be wagered 35 times the sum of your deposit plus initial bonus amount before any funds can be withdrawn. Games contribute differently to the wagering requirements. The list of games and their respective weighting towards the wagering requirement can be found here. Bonus funds must be used within 30 days and bonus spins within 24 hours, otherwise any unused shall be removed. The Casino reserves the right to confiscate any winnings from anybody betting over €5 while your bonus is active or claiming this offer using Skrill or Neteller as a deposit method. Promotional and General terms and conditions apply in full.

100 Spins
£300 Max Bonus
18+ | T&C's Apply

18+ | T&C's Apply

• Players residing in the United Kingdom can claim 10% money back for their play between 10:00GMT Friday to 10:00GMT Friday, every single week. • The 10% weekly money back payments will be awarded for real money net losses (real money bets minus real money wins), during the qualifying period. For example, if you wager a total of £600 and you win £200 from your bets, your money back will be calculated on your net losses, as follows: £600 - £200 = £400 net losses. • Your weekly money back payments will be rounded down to the nearest £1. The minimum weekly money back payment will be £1, the maximum weekly money back payment will be £1,000 • The 10% weekly money back payments will be awarded every Friday at 10:01GMT and will be issued to the rewards section of your account. • Your money back payment will be awarded with no wagering requirements. Once the money is in your account, you are free to use it as you wish. • Rolla.com reserves the right to change or withdraw this promotion at any time and without any notice. Standard Terms and Conditions apply.

£1 000 Max Bonus
300 Spins
£1 500 Max Bonus
200 Spins
£1 000 Max Bonus
18+ | T&C's Apply

18+ | T&C's Apply

105 Spins
£1 500 Max Bonus
18+ | T&C's Apply

18+ | T&C's Apply

7 Spins
£777 Max Bonus
18+ | T&C's Apply

18+ | T&C's Apply

In order to take part in this Promotion you need to: Register a new Account. Make a first deposit of at least £10 into your Account. When you make a first deposit of at least £10 after registering your Account, you will receive 1 Free Spins for every £1 deposited, up to 50 Free Spins. The maximum number of Free Spins you can receive is 50. If your First Deposit exceeds £50, you will not receive any additional Free Spins. You can use the Free spins only on the following games: Finn and the Swirly Spin, Twin Spin Deluxe, Starburst, and lights ("Promotion Games"). Free Spins have a value of 10p each and will expire 3 days after being credited into your Account. There is no wagering requirement on winnings from the welcome offer Free Spins. Winnings will be credited to your cash balance on completion of the Free Spins. You may withdraw your winnings and cash balance at any time without restriction, except where necessary to comply with any general regulatory obligations.

50 Spins
18+ | T&C's Apply

18+ | T&C's Apply

50 Spins
£300 Max Bonus
18+ | T&C's Apply

18+ | T&C's Apply

18+. New players only. Minimum deposit of £20. Bonus spins are valid on selected games only, and subject to 35x wagering, and must be used within 10 days, otherwise any unused bonus spins shall be removed. Bonus funds are 100% up to £300 and separate to Cash funds. 35x (bonus + deposit) wagering requirements. £5 max bet with bonus. Bonus must be used within 30 days otherwise any unused bonus shall be removed. Terms Apply. BeGambleAware.

90 Spins
£300 Max Bonus

How Does Online Slots Work?

You may wonder what poker has got to do with slots. Everything, as it turns out. When the first ever slot machine was being designed by Sittman and Pitt, the company based the concept on poker.


If you got a good hand, you received free beers and smokes. In fact, the very first slot machines never paid back in cash.

It wasn’t until late 1890s that you could expect any real money from slots. Charles Fey took the first-generation prototype, simplified it and, most importantly, engineered it to pay back an instant cash reward.


His Liberty Bell machine – consisting of spades, diamonds, a horseshoe, hearts and a Liberty Bell – became so popular that it spawned an entire industry; mechanical gaming.


Ironically, slots were banned from Fey’s home state, California, but that did not cause any harm to the immense reputation of his invention, which received such a high rate of demand that the supply lines proved insufficient. 

Slot Machines – The Basics and Developments

The year is 1976 and counterculture is at its peak. The trusted old slot machines are as popular as ever, but change is in the air. Enter, the Fortune Coin Co.


They installed a 19-inch Sony Trinitron full-colour monitor as the screen, and, for the machine functions, logic boards were used. No one probably knew it back then, but this model would become the genesis of all modern slots, including the virtual ones.


The introduction of logic boards and colour gave the machines a futuristic look, thus pushing the popularity of the game even higher. Some experts say that it probably inspired the arcade game culture that would soon sweep America and the rest of the world. Las Vegas took a fancy to the machines of the Fortune Coin Co., and they became a standard fixture. 

The Computer Age – A Revolution of Slots Play

The internet, suffice to say, has changed everything. And slots, in keeping with their unique ability to adapt to the shifting times, have gone from analogue to digital to virtual without breaking sweat. Players today need not even move from their homes to indulge in their favourite games. The slots come to them.


The virtual revolution has spawned online casino sites that host games in multiples of hundreds. With so many options, and at our fingertips, there is no chance for boredom to make even a peep, never mind an entrance. Software providers NetEnt are known to make some of the best online slots on the market.


The video slots have bigger payouts, grander visuals and an intuitive interface that welcomes one and all. Where you once had three paylines, you have now in excess of 200. The jackpots and bonuses can make you an instant millionaire if lady luck takes a shine to you. But the variety of themes is the best part of the new-age slots.


You can suit yourself up as a superhero, step into the sandals of a Roman gladiator, strap into a race car, or strum an iconic song for a concert audience. The various scenarios make playing slots a temptation too hard to resist. And with smartphones and tablets, you can now log on any time anywhere to indulge in your favourite game. 

Machine Intelligence - The Future of Online Slots

With the wins getting bigger and bigger, but the slots remaining the same, developers had to guard against intelligent players gaming the system. That’s where Random Number Generators (RNG) have come into focus.


The technology is so advanced that even if an online slot is idle, combinations continue to be generated, so that no one can predict what comes next. What this means is that even a second earlier or later can decide if you become a millionaire or walk away with your hands empty. 

The Darling of Casinos

Make no mistake, slots are one of the highest earners for new online casino sites. The maximum payout may sound impressive, but the chances of you hitting one are rare. The reason for that is that the wagering options rest with the house.


They decide how much you can bet, without any certainty of how much you may win back. Other games have a 50/50 chance or a bigger win in relation to the bet.


Slots, however, are designed to extract more and more from you, while reinforcing the hope that you could strike it rich. The beauty is that some actually do. And for those players who choose to spin the reels on a progressive jackpot slot, winnings can run into the millions.