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Zodiac Play
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Book of Faith Play
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Team Santa Play
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Play Online Slots at King Casino

Any online casino worth its salt has a sizable collection of online slots that cover a wide range of mechanics, themes, and features – and King Casino has exactly that.

Our gallery of online slot games has releases from all the biggest names in the industry, such as Pragmatic Play, NetEnt, Microgaming, Eyecon, Red Tiger Gaming, and more! Plus, game releases cover themes from ancient Egypt to outer space, from the dinosaurs to fishing, and everything in between.

Slot games may all share the same general premise: place a bet and spin the reels, but they can look and play out quite differently. We have Megaways slots, Slingo games, slots with Cluster Pays, and jackpot slots. We have classic 3-reel slot machines with little-to-no bonus features and the latest slot games packed with potential Extra Spins, pick-me rounds, re-spins, and so much more.

So, if you’re after an online casino that offers you the best the world of online slots has to offer, consider your search complete. Join us at King Casino to play online slots. 

Real Money Online Slot Games

It’s important to use an online casino that you can trust. The United Kingdom Gambling Commission (UKGC) is the governing body for gambling in the UK. All trustworthy online casinos that operate in this jurisdiction are licensed and regulated by the UKGC.

King Casino is one such casino.

The UKGC does not allow any sort of demo mode or free play options for online casino games, including online slots. As such, King Casino only stocks real money slot games; this means that you can play all of our slots with real money for the chance to win real money.

So, if you’re browsing our collection and deciding what to play, rest assured that all of our offerings are real money slots.

Consider reading the review of a slot game or searching for gameplay footage if you’re curious and want to learn more before staking money on it. But if you’re ready and want to get started, create an account with us and place a deposit you’re comfortable with to play online slots for real money.

Best Online Slots

King Casino offers players the best online slots to play. Slots aren’t all the same; in addition to the difference in themes and layout, they can also have different mechanics and features that result in vastly different gameplay experiences.

Below are some of the different types of slots you can find in our catalogue.

Megaways Slots

The Megaways mechanic was developed by Big Time Gaming and was made popular through their Bonanza slot game. 

Megaways slots use a random reel modifier mechanic, which results in each reel having a random number of symbols appearing on them, and they can differ on each spin. The reels can typically hold between 2 and 7 symbols. 

Thanks to this feature, the number of ways to win on a Megaways slot is usually far greater than in a standard slot game. The number of winning ways can vary from slot to slot, but it can reach the hundreds of thousands – most Megaways slots have up to 117,649.

Some of the popular Megaways slots available here at King Casino include Royal Mint Megaways, Eternal Phoenix Megaways, and Gonzo’s Quest Megaways

Jackpot King Slots

Jackpot King is a progressive jackpot system created by Blueprint Gaming. Multiple games are part of the Jackpot King system, and it’s a small portion of every bet placed on each of these games that contribute to the jackpots. So, as you can imagine, there’s potential to win some impressive prizes!

The Jackpot King feature can trigger randomly in any of the participating slot games. If 5 Jackpot King symbols land in a spin, you are then taken to the crown mini-game. Here, you are trying to land as many crowns as possible, landing 15+ triggers the Wheel King round, and it’s here that you can potentially win large cash prizes or one of the 3 jackpots.

The jackpots are the Royal Pot, the Regal Pot, and the Jackpot King. The former 2 must be won before they reach £3,500 and £35,000, respectively.

We have a number of Jackpot King slot games available, including Eye of Horus JPK, Fishin’ Frenzy Big Catch JPK, and Luck O’ The Irish Gold Spins Fortune Play JPK.

Slingo Slots

Slingo is what you get if you combine slots and bingo!

The aim is to complete lines – called Slingos – and fill the 5×5 grid, also known as a full house. You do this by marking off the numbers as they appear on a 5-symbol slot reel below. 

You start by choosing your bet amount, and you are then given a number of spins – usually 11. You are trying to form as many Slingos on the grid in the allotted spins to move up the pay ladder. 

At the end of the spins, you have the option to collect any winnings up to that point and start a new round for another bet, or you have the option to play additional spins. However, these extra spins come at a cost that is usually higher than the stake you placed; the cost depends on the prize potential of the current grid.

Slingo Reel King, Slingo Centurion, and Book of Slingo are just some of the incredible Slingo games available to play online at King Casino.

High RTP Slots

When searching for online slots to play, many players seek out a slot’s Return to Player (RTP) rate. This value is an indicator of the amount of money a slot game takes in that may potentially be paid back out to players.

The RTP rate is an average value taken from a large number of sample spins. In this sense, it is a better indicator of the slot’s behaviour in the long term. For example, a slot with a RTP rate of 96.5% should average as potentially paying £96.50 out to players for every £100 it takes in, in theory.

However, since slots are random, you may win more or less than the amount suggested by the RTP. 

Here are a couple of slots available at King Casino that have a high RTP rate:

  • Grand Express Action Class – 96.94%
  • Book of 8 Riches – 96.90%
  • Fortune of Giza – 96.51%
  • Voodoo Temple – 96.51%
  • Rainbow Cashpots – 96.50%
  • Drill That Gold – 96.49%

Popular Online Casino Slots

Not only do we have the weird and wonderful when it comes to online slots, but we have the slots players come back for. We have the classics that have stood the test of time as well as newer releases that have taken the industry by storm.

The Fishin’ Frenzy, Rainbow Riches and Fluffy Favourites series of slots continue to be beloved by players. The developers continue to release new innovative instalments keeping things fresh and updated.

Check out some of the most popular slots available on our site below to see why people keep coming back:

  • Big Bass Bonanza
  • Book of Dead
  • Starburst
  • Legacy of Dead
  • Fire Joker
  • Royal Mint Megaways
  • Eye of Horus JPK
  • Fishin Pots of Gold
  • Fruity Friends
  • Wolf Gold

New Online Slots

The online slot selection at King Casino is always growing. We continuously add brand new online slots to our collection, and you can view the recent additions in the ‘New’ section.

Slots developers are always looking for new ways to take slot games to the next level. We closely follow all the major developers and keep an eye out for any news regarding upcoming releases to make sure we bring our players the latest online slot games. 

It’s always worth checking back to see what has been added to the site.

So, whether you’re looking to play classic slot machines or brand new online slots filled with the latest innovative features, here at King Casino, we have something for everyone.

Progressive Jackpot Slots

A progressive jackpot is one that continuously increases until it is won, at which point it returns to a seed value and begins increasing again. 

Progressive jackpots can also have numerous slot games contributing to them, with each slot allowing the chance to trigger the jackpot.

Progressive jackpots typically offer far larger prizes than fixed jackpots, but they are also triggered far less frequently. 

The two most well-known progressive jackpots are the Mega Moolah jackpot and Jackpot King. The former is a slot game from Microgaming and holds the record for awarding the largest jackpot payout in an online slot, awarding a player £13.2 million in 2015. The latter is a progressive jackpot system from Blueprint Gaming that has numerous participating slot games, including titles such as Fishin’ Frenzy, King Kong Cash, The Goonies, and Deal or No Deal.

Play Our Slot Games On Your Mobile Phone

Many online slots are created using HTML5 software, which allows you to play online slots on your mobile devices.

Many of the slots on our site are mobile slot games, allowing you to play on the go. The best part? No download is necessary! Just head to your device’s browser and load up King Casino as you would on a desktop, log in to your account, and select a game to start playing.

The displays are optimised to fit the small screen without compromising on quality or detail. You still require a stable internet connection, and your device has to support HTML5 software.

If you were wondering where you can find the best phone casino, you just did! Click ‘Join’ in the top-right corner of the page to create an account and get started.

Looking For Online Slots With A Bonus?

Bonus offers are commonplace in online casinos. In most cases, you can play slots online with bonus offers; whether they are loyalty bonuses or new player offers, they nearly always apply to slot games.

King Casino is no different. We offer an online slots signup bonus for all new players. 

Register an account with us and place a first deposit of at least £20 to claim the welcome bonus. After placing the deposit, you can claim a 100% deposit match bonus for up to £50, in addition to 20 Extra Spins on the Book of Dead slot. After placing a second minimum deposit of at least £20, you can claim a 50% deposit match up to £100 on top of 30 Extra Spins on Starburst (T&Cs apply).

With our incredible welcome offer and our astounding collection of online slots, you can find everything you would want and need from an online casino here at King Casino. 

We have classic 3-reel fruit machine-type slot games through to online slots with bonus features and mechanics such as Megaways and Slingo. No matter what type of slot game you’re after, King Casino has it covered.

*All values (Bet Levels, Maximum Wins etc.) mentioned in relation to these slot games are subject to change at any time.

*18+. New Players Only. Min. deposit £20. UK players. Max. bonus 1st deposit 100% up to £50 and 2nd deposit 50% up to £100. Max wins from spins £100. 35x wagering applies, within 21 days. 20 spins on 1st deposit and 30 spins on 2nd deposit. Spins expire after 24 hours. Full T&Cs apply.