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Play Slots

Slot games have become a staple of online casinos. Their simple premise, mixed with incredible design and features, makes for one of the most popular types of online casino games.

Slot games come in a range of themes and layouts, and gameplay can vary from slot to slot. You’ve got classic slots that are reminiscent of traditional slot machines, jackpot slots that may offer daily jackpots, and slots packed with bonus games and features, such as free spins and multipliers.

You won’t find a better selection of online slots than here at 666 Casino. We have all-time classics like Starburst, as well as some of the most successful slot series in the industry, such as Fluffy Favourites, Fishin’ Frenzy and Rainbow Riches.

We have such an expansive collection that we have a handful of slots just based around Cleopatra!

So, whatever you look for in slot games, you will be able to find at 666 Casino.

Discover The Most Popular Slots Online

Browse our collection to discover the most popular slot games the industry has to offer. 

We keep up to date with all the major slots developers and their releases. We have slot games from giants in the iGaming industry, such as NetEnt, Microgaming, Pragmatic Play, and Playtech, to name just a few!

Megaways slots are just one example of the types of slots popular among players, with Rainbow Riches Megaways being one of our most popular. 

We also understand that some of the most popular slot games are ones that offer players the chance to win big. That’s why we have a range of progressive jackpot slots as well, such as Fishin Frenzy Big Catch Jackpot King.

Here are a few of our other most popular slot games at the moment: 

  • Big Bass Bonanza 
  • Book of Dead 
  • Fishin’ Pots of Gold 
  • Starburst 
  • Eye of Horus Megaways

How To Play Online Slots

The appeal of slots can lie in their simplicity; they don’t require skill or strategy. Although they can vary in terms of different themes, mechanics and bonus features, they largely follow the same basic principle. 

After selecting a slot, you set your preferred bet amount from the range available, hit the spin button, and wait to see what the outcome is.

Winning combinations are typically formed by lining up a minimum number of matching symbols on one of the paylines or, if the slot uses winning ways, lining them up on adjacent reels.

How to form winning combinations – as well as their possible payouts – can normally be found in the slot’s paytable. It’s advisable to read through this before spinning the reels.

Wild Symbol

Wild symbols are probably the most common bonus symbol found in slot games. They are capable of substituting for other symbols to potentially help complete winning combinations. In some games, they can also award payouts for landing numerous wild symbols along a payline.

However, they often cannot substitute for other bonus symbols, but this can vary from slot to slot, so it’s always best to check the paytable.

Scatter Symbol

Scatter symbols are another common bonus symbol in slot games. These are special symbols that are usually responsible for triggering a bonus feature, such as a free spins feature. They normally do this by landing a minimum number of them anywhere in view in a single spin.

In addition, scatter symbols can sometimes award payouts from anywhere – they don’t need to land on a payline or consecutive reels.

New Online Slot Games Added Each Week

Bringing our customers the best the industry has to offer is of the utmost importance to us. As such, we add new slot games to our collection every single week to ensure we’re offering the latest slot games.

We add, on average, between 40 and 50 new slots to our site per month.

We follow all the iGaming giants so that we’re in the know when it comes to the newest slot games and any upcoming releases.

So, if you’re a player that prefers to play the newest online slots, be sure to keep coming back and checking our collection at 666 Casino.

Play For Real Money

All of our online casino games, including slot games, require you to make a deposit and place your stakes using real money in order to play. 

The UK Gambling Commission (UKGC) prohibits demo mode in the UK in an effort to promote responsible gambling. To comply with their regulations, all of the slot games we offer are real money slots.

So, although you have to use your own funds to place wagers, you can potentially win real money, and you get to keep what you win.

Log in to 666 Casino, or create an account if you don’t already have one, to play slots for real money online.

Mobile Slot Games

With the increasing popularity of online casinos came another great piece of innovation: mobile slots!

Most online slots have been developed with HTML5 software, which means they are no longer only accessible by PC. They also double as mobile slot games that pay real money. You can load up 666 Casino on your mobile device’s browser and play these slot games with their displays adapted to the small screen.

Mobile slots allow for greater convenience and make them more accessible.

So, if you’re looking to play slot games on your phone, look no further than 666 Casino!

Play Classic Online Slot Machines

Our range of classic slots may appeal to those that prefer the fruit slots of old but are looking to play slot machines online. 

We’re talking slots that offer holds & nudges, slots that feature traditional slot symbols, such as various fruit, BARs, bells, and red 7s, and slots without bonus features – having, at most, a wild symbol.

These are the main characteristics of classic slots. Some players enjoy the nostalgia of playing online variations of traditional slot machines. 

Their appeal lies in their simplicity. In an industry where slot games are getting increasingly intricate, and innovation strives for bigger and better, 3-reel slots – such as 7s Deluxe and Fire Joker – stand out. They can be seen as a breath of fresh air from all the feature-packed slot games with a range of themes and layouts.

Go to the ‘Slots’ section of the taskbar and filter the theme by ‘Classic’ to view our range of retro slot games.

Online Slots FAQs

What Are The Best Slots To Play?

This is down to personal preference; the best slot for one player may be different to the best slot for another. It stands to reason that the most popular slots may be some of the best, as many players keep coming back to them.

Some of our most popular slots include Big Bass Bonanza, Book of Dead, Fishin’ Pots of Gold and Rainbow Riches Megaways.

What Does RTP Mean On Slots?

The Return to Player (RTP) rate is an indicator of the payout rate of a slot game. Given as a percentage, it refers to the amount of money taken in by a slot that it may pay back out to players. For example, a slot with an RTP of 95% should, in theory, pay out £95 for every £100 it takes in.

However, it’s an average determined by the developers from a vast sample of spins, and since slots are random, it may not be reflected in short sessions.

Are Online Slots Really Random?

Online slots use a Random Number Generator (RNG) to ensure outcomes are random and unpredictable. RNGs work by taking a seed value and running it through a complex algorithm to generate a number sequence. This sequence corresponds to a random outcome on the reels.

The RNG is regularly tested by third-party auditors to ensure it is performing to an acceptable level of unpredictability.

Take Advantage of Our Welcome Offer

If you’re new to 666 Casino, we have an incredible welcome offer available to all new players that register an account with us.

After creating an account and placing your first deposit of at least £20, you can claim a 100% deposit match bonus up to £66. Furthermore, you can claim 66 Extra Spins on the Big Bass Bonanza slot after placing your second deposit of at least £20! (Full T&Cs apply)

So, create an account at 666 Casino to be able to claim this generous welcome offer and to access our expansive collection of online slots

*18+. New players only. Min deposit £20. Max bonus 100% up to £66 on 1st deposit. 66 spins on Big Bass Bonanza on 2nd deposit. 35x wagering applies, within 21 days. Max wins from spins £100. Spins expire after 24 hours. Full T&Cs Apply