666 Casino Review (updated April, 2023)

Brace yourself for a devilishly good online gambling experience at 666 Casino, but before you dive in and claim your welcome bonus, take a moment to read the complete Sir Slots 666 Casino Review to find out more about all the offered games, software, and gambling sites’ security factors to ascertain if you are ready to deal with the devil.


666 Casino is an online gambling site operating in the UK and licensed by the UK Gambling Commission. The website offers 2,000 casino games and more than 60 jackpots. Based on the reliable audits by eCOGRA, the site’s average payout is 96.12%. The Book of Dead is 666 Casino’s most popular game. 666 Casino is among the most popular PlaynGo online gambling sites here in the UK.

Pros and Cons

+ 2000 games
+ 115 providers
+ Great bonuses

- No loyalty club
- Mobile site lags/ lobby navigation issues
- 35x wagering requirements

666 Casino Games Variety

One of the most important criteria to consider before deciding to play at any slot site is the available portfolio of games. If they do not have your favourites on their list, you do not need to sign up on the platform. The following section describes the extensive game collection you expect to find on the site, including table games, card games, slots, scratch cards, and video poker.

666 Casino Slots & Table Games

You can rest assured that the 666 Casino games will offer you an outstanding online casino gambling experience. The platform has a highly versatile game collection comprising nearly 2,000 game titles available; however, it predominantly consists of over 1500 slot games. This makes 666 a large online gambling site by the current industry stats.

Across the whole site, we were naturally impressed by the theme’s variety, game types, and available options. Unfortunately, however, the online casino doesn’t have an arcade game section despite the growing site’s ‘Fun’ games section.

We are also very much impressed with the available game selection of 666 Casino. Every type of game you’d want to play is well taken care of. However, there are only four video poker options, so this is lacking.


The games at this site are sourced from over 115 different software developers, which is more than what we would expect to find in almost any of the top slots sites and makes this site stand out as a go-to option for slot lovers. 

FELT, renowned in the iGaming industry for its beautifully animated titles, provides most blackjack and roulette games.

Live Games Selection

No online casino would be considered a prominent option without a live dealer games section in the UK market. Fortunately, 666 Casino ticks this box. Evolution Gaming provides most of the lobby of live dealer games, but many NetEnt and Pragmatic Play live games are also available.

Taking Things Mobile

You can easily play 666 Casino games online as their website has been developed to suit any device, automatically adapting for screen size and operating system. However, 666 Casino software for mobile is not as good as we’d expect.

The games and site functions work relatively well once in them, but the experience when scrolling through the library is not the best. There’s no 666 Casino mobile app available, only the live site.

666 Casino Table Limits: Who Should Play Here?

The 666 Casino aims its limits at regular players, offering significantly low table limits. This is good news for players who love experimenting with lots of different titles or have set aside a smaller ongoing gambling budget as the entry barrier is pretty low.

The live suit section of the 666 Casino games would be preferable for high rollers. The upper limits are way above tens of thousands of pounds. If you enjoy the high-adrenaline kick and are comfortable taking high risks, then these are the games for you.

RTPs and 666 Casino Payouts

The payout rate (RTP) at the 666 Casino is 96.12% on average. This is thanks to most of the online games being slots at this site. Again, going by industry stats, though there are some notable titles with RTPs of above 99%, 666 Casinos RTP is on the high end of the average. 

Additionally, we were impressed when researching the payout rates offered. We did not necessarily consider the actual average games RTPs but got content with the complete transparency provided by the site for their numbers. Before playing any title at this site, you can click the info button and find out the game’s RTP, rules and other significant info.

Why Care about RTPs?

You must understand the RTP rates to make the best decisions when picking games. It is always recommended to play high RTP games as they guarantee a decent payout in the long run, unlike low RTP titles, which are better avoided.

The numbers also go a long way in satisfying the players’ peace of mind as they help certify the fairness of the games in the long run.

RTP is established through a vigorous trailing process with third-party auditors testing games. The auditors subject the games to millions of simulations which result in the average payout figures. These must match what the provider advertises.

Note, that is how the game operates on average over millions of spins. Therefore it does not say how a slot will payout or behave when you play it.

666 Casino Deposit and Withdrawal Methods

The 666 Casino offers numerous payment methods that afford you the much-needed freedom to deposit and withdraw in a convenient and efficient method you are familiar with. 

The operator has covered all bases, including online banking, debit cards, prepaid cards, and e-wallets. So, what happens when you have so many options to select from? We recommend you go for the safest and fastest available option. 

All deposit and withdrawal methods are internationally accepted and secure payment methods; hence whichever you decide to use, you need to have sufficient argument backing up your decision. 

We recommend using an e-wallet as they tend to perform the best when it comes to processing speeds. Like online banking methods, the method is very convenient. You can efficiently control your transactions without the need for any authorisation or interference from any third party, and cashouts range from instant to 48 hours.

User Experience of 666 Casino Software

The 666 Casino software and website theme is the first thing that needs to be discussed when reviewing the user experience. 666 Casino has opted for a cartoon theme that depicts hell, and there’s a cheeky devil-like creator that’s the site’s mascot.

The site is very user-friendly, using a clear large grid layout for the lobby and the site has a useful search function making it easy to find whatever you want. The games are also arranged into sensible categories.

One recent trend shaping the online gambling industry is the development of no download platforms. 666  has not been left behind, making it easier to access their site to play. All that you need to do is have a working internet connection and access the website. 

The games collection is highly versatile and is keen on variety ranging from cartoonish styles to art deco titles. Players who fancy trying out new things will positively embrace this awesome range. It also improves the general hectic aesthetic of the platform.

666 Casino Online Casino Company Information

In this section of the 666 Casino review, we’ll dive in at the operator scenes and its parent company: the site was launched in 2017 and is owned by White Hat Gaming. 666 Casino’s sister sites include Dream Vegas and Skol Casino.

Responsible Gambling First

666 Casino software has formal relationships with numerous responsible gambling organisations thanks to its affiliation with White Hat Gaming. Some successful collaborations include BetBlocker, GamCare, and GamStop, all great advocates for responsible gambling and treating problem gamblers in UK punters. 

Getting in Touch with Customer Support

If you need to reach out to the 666 support, you can use the 24/7 live chat or contact them via email. Sadly there’s no 666 Casino contact number or phone support, but this is becoming common at online gambling sites.

666 Casino Software Security and Safety

When making real money transactions anywhere, you need to ensure your money and your banking info are in safe hands. Safety is already guaranteed in 666 Casino due to the legitimate licence from the UK Gambling Commission

Many conditions should be met to be licensed and operate any gambling site in the UK Jurisdiction. One of the most crucial is employing high-quality encryption technology from a renowned tech security company. 666 Casino runs under encryption software.  

Secondly, a third-party auditor needs to guarantee the fairness of the games by ensuring the games have legitimate RTPs. 666 Casino is regularly audited and is certified by eCOGRA, which is among the top authorities in the world in matters of RNG software regulation. 

Additional Highlights and Points

666 Casino was launched in 2017; hence it hasn’t been in the industry for a long time compared to its competitors. 

We award full marks to this site for having great bonus offers, among the best casino bonuses in the entire UK gambling space currently. This is primarily due to its lucrative cash bonuses and numerous free spins.

666 Casino doesn’t have an available VIP or Loyalty program for its players, as of this writing, unlike numerous other sites like Playzee under White Hat Gaming. However, the operator offers numerous seasonal promotions to appreciate its players’ loyalty. It makes some sense to differentiate brands, but it isn’t delightful for the 666 Casino.

666 Casino Review: The Bottom Line

As we come to an end, our 666 Casino review is positive. The quantity and quality of the available titles in the game library and multi-faceted new player promotions impress us. However, the theme could be contentious as not everyone fancies the demonic gambling side. With such a great welcome bonus on the table, we recommend you to go ahead and check out this site for yourself. If this isn’t the slots site for you, take a look at some of our other top UK online casino recommendations - there’s plenty to pick from!


You may still be in the dark on some queries and thoughts about this site even as we come to the end of the review. It is expected; hence we’ve answered players’ most common FAQs about this site below.

Is 666 Casino safe?

This operator is licensed by the UK Gambling Commission and has standard encryption measures taken to ensure all its players are safe.

What are the best 666 games?

The 666 games lobby is among the most extensive collections that you’ll find at a UK online gambling site. It ranges from card games, slots, scratch cards, and table games. However, the live dealer section offers the best games, mirroring an authentic gambling experience. Additionally, more than 100 providers power this diverse platform.

How good are 666 slot games?

Slots are unarguably the most preferred game titles at 666. The slots section seamlessly immerses you in a world-class gambling experience. Here you will find classic slots and games of calibre, including Mega Moolah, Immortal Romance, Rainbow Riches, and Starburst.

Is there a 666 Casino no deposit bonus?

666 Casino doesn’t have any no deposit bonus either for existing or new players. However, you can take advantage of the new player welcome bonus even though you must make a deposit first.

Are there 666 Casino free spins?

As long as you meet some specified conditions to be eligible for the free spins feature, you could get 66 free spins as part of the new player 666 Casino bonus package. The offer bears max bet limitations, game eligibility criteria, and wagering requirements, so read the terms and conditions before opting in.

Can I play 666 Casino on mobile?

Yes, however, there’s no downloadable app. Simply hit up the web platform from your mobile device to play from your phone, log in, and start playing.

Does 666 Casino payout?

Yes. Any online gambling site operating in the UK jurisdiction under a UKGC licence guarantees fair payment. Unlike other online sites, you will also experience timely payouts at the 666 Casino. You may dispute undesired outcomes or decisions with the operator and the UKGC, but we are almost sure you will never have to.

How can I contact the support team?

Contact the dedicated support service via email at [email protected] or send a direct message in the live chat that’s available 24/7.

What is the best 666 Casino withdrawal time?

It takes the site up to 48 hours to process withdrawals, after which the money is sent to your account. In total, it takes 1-5 days for cards and 48-72 hours for e-wallets.