666 Casino Review

£666 welcome bonus, plus 66 bonus spins on first deposit*

*18+. New players only. One bonus offer per player. Minimum deposit of £20, Max bonus bet £5 Bonus offer must be used within 30 days and bonus spins within 10 days, otherwise any unused shall be removed. Bonus spins are valid on the Guns n Roses game only. Bonus funds are 100% of your first deposit up to £666 and 50% of your second deposit and third deposit up to £666 Bonus funds are separate to Cash funds, and are subject to 35 x wagering the total of bonus, cash & bonus spins. Terms Apply. BeGambleAware.
  • Huge selection of over 700 games
  • Excellent mobile casino site
Payment options
Software options

Live Help

Email: support@666casino.com

Help available 24/7

About 666 Casino

666 Casino was launched in 2017 and offers UK players an exciting and comprehensive gaming experience, with more than 700 games in all categories that can be played on any device.

Operated by Caddell Limited, 666 Casino is licensed by the Malta Gaming Authority and regulated by the UK Gambling Commission, and so players can be sure of a fair and secure gaming environment. In addition, there are clear policies on privacy and how your personal information is stored and used, and this transparency provides added peace of mind.

Online security is also a feature at 666 Casino, with RapidSSL encryption to protect all financial transactions and to provide protection for your account.

The games at 666 Casino are by more than 30 different producers, including big names like Microgaming and NetEnt alongside a host of up-and-coming developers. This means you always get great gaming choice and variety here.






UK Gambling Commission & Malta Gaming Authority


UK players can manage their casino accounts at 666 Casino in GBP, and there are no fees charged for making deposits or withdrawals. Although the range of payment methods is not enormous in comparison with other sites. In addition, they are all accessible and convenient, so most UK players should have no trouble being able to use them.

You can use Visa and MasterCard credit and debit cards, and bank wire is also available. Trustly is accepted, as is Skrill and Neteller e-wallets, along with PaySafe Card pre-paid cards.

Deposits are credited to your account instantly and funds are available to play with straight away. When you make a withdrawal request, there is a procession period of up to 48 hours (during which time you can reverse your request). Once this has been done, the payment is completed.

If you are withdrawing to an e-wallet, the funds will generally be cleared and available on the next working day; if you are withdrawing via bank wire or to a credit/debit card, this can take up 3 working days. The minimum withdrawal amount using any of these payment methods is £20.


For gaming variety and choice, 666 Casino ranks up there with the most extensive UK online casinos we’ve seen. There are over 700 games in total, with more than 500 slots by a range of leading games producers.

There are slots games in all categories, including old school 3-reel slots, themed video slots and a host of new release games. Some of the most popular and well-known 666 Casino slots include Game of Thrones, Starburst, Avalon (1 & 2), Gonzo’s Quest, Immortal Romance, Jurassic Park, Big Kahuna, Planet of the Apes, Esqueleto Explosivo, Guns N’ Roses, Jack Hammer (1 & 2) and Motorhead.

You can also play more than 30 progressive jackpot slots, including Mega Moolah by Microgaming and Mega Fortune by NetEnt, as well as progressive jackpot games by Blueprint Gaming such as Vikings of Fortune and The Naked Gun.

666 Casino has one of the biggest ranges of table games of all the sites we feature here, with multiple versions of all the casino classics. For instance, you can play 30 different blackjack games (including single deck, double exposure and pontoon), along with European, French and American roulette, as well as table poker, video poker and scratch cards.

There is also a large selection of live dealer games by NetEnt and Evolution Gaming, all streamed in real time and dealt by professional dealers.

The RTP for every game at 666 Casino is published on the site and is always easily accessible.

Casino software

The games at 666 Casino are by a huge number of different developers. You can play slots and casino games by 1 x 2 Gaming, 2 by 2 Games, Adoptit Publishing, Bally, Barcrest, Betdigital, Big Time Gaming, Bla Bla Studios, Blueprint, Concept Gaming, ELK Studios, Evolution Gaming, Fantasma Games, Felt Games, Foxium, Fuga Gaming, Games Warehouse, Inspired Gaming, Just For The Win, Leander, Lightning, Magic Dreams, Merkur, Meta Games Universal, Microgaming, Multicommerce, Mutuel, NetEnt, NYX, Old Skool Studios, Pear Fiction Gaming, Play N’ GO, Probability Jones, Quickspin, Rabcat, Realistic Games, Red7, Red Tiger, Scientific Games, Seven Deuce, Shufflemaster, Sigma Gaming, Spieldev, Spike Games, Storm Gaming, Thunderkick, Touchstone Gaming, Triple Edge Studios, Wild Streak, WMS and Yggdrasil.

All games at 666 Casino are instant play and so can be played in the browser of your desktop or laptop with no casino software to download. Once you have an account, you can play games in Play for Fun mode as free slots.

666 Casino on mobile

All games in the 666 Casino mobile casino are browser-based and so there is no casino app to download and install. This means you can play mobile slots directly in the browser of iPhone and iPad, Android smartphones and tablets, and phones using other operating systems such as Blackberry and Windows.

The 666-mobile casino features a straightforward, contemporary mobile design that gives you quick and easy access to games and menus at all times. There is a very useful search function in the mobile casino to make finding your favourite titles easier when you are playing on the move on your phone or tablet.

The game’s range in the 666-mobile casino is huge, with slots in all categories (including progressive jackpot games), table poker, video poker and live dealer games. The visual and audio quality is outstanding, and all games automatically resize so that they always suit the size of the screen you are playing on.

Once you have a 666 Casino account, you can use the same login details for the mobile casino or at the desktop site.

Design and Lobby

666 Casino definitely goes all-in on the devilish design and theme, but at the same time it doesn’t take itself too seriously. There is a fun host character who is essentially a fat guy with plastic horns and a painted red face dressed up to look like a pantomime devil, and the colour scheme is predominantly red and black, but none of this should be too ominous or off-putting for those of a delicate disposition!

With so many games to choose from on the site, the sort function is especially important and helpful. You can search for games both alphabetically and by developer, which is very useful and makes finding your favourite titles quicker and easier.

  • The live chat feature is always available via a side tab on every page, and so navigating to customer support, or anywhere on the site, is straightforward, regardless of the device or platform you’re playing on.

Customer Support

  • Phone: Not listed
  • Email: support@666casino.com
  • Live chat: Yes

Customer support is available  24/7.

Did you know?

With such a huge number of games developers onboard at 666 Casino, there is always a great selection of new release slots to enjoy.

Bottom Line 

For the serious UK slot aficionado, there are not many sites better than 666 Casino. The range of games is outstanding, and the combination of big name developers alongside the newer names means there is always plenty of variety. This extends to the 666-mobile casino as well, as the number of games there means you are always spoilt for choice, no matter what device or platform you’re playing on.

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