666 Casino Review (2025) - Daily Free Spins
Launched in 2017, 666 Casino is a popular online casino that invites players to 'Relight Your Fire', with its devilishly fun branding and bold aesthetic.
Built around a fiery, tongue-in-cheek theme, they offer a premium selection of slots, table games and live dealer titles from top-tier providers.
My comprehensive casino review covers everything this site has to offer.
666 Casino operates under the AG Communications umbrella, a company which includes a number of other online casinos like Mr Play and Slotzo.
The site holds a license from the UK Gambling Commission (licence no. 39483), so this is a totally trustworthy place to spend your money and even stand a chance of winning.
The casino welcome bonus at 666 Casino is true to the site’s name: you’ll get up to €66 in deposit match bonus cash and 66 free spins.
666 Casino Promo Code
You don't need a promo code to claim this bonus.
How it Works
- Deposit a minimum of €20
- Your bonus funds will then be credited to your account
- The free spins are credited once you have made a second deposit of €20 or more
- The free spins are for Big Bass Bonanza
- They will expire after 24 hours
- The maximum win limit on the free spins is €100
Wagering Requirements
This bonus package comes with a 35x wagering requirement attached.
Not all games will contribute towards wagering, with some game types exluded altogether. I would recommend checking the terms and conditions to see which games contribute the most before you claim this bonus.
Is the 666 Casino Bonus Worth It?
While this might not be the most eye-catching bonus, it represents a solid casino offer.
Offering both a deposit-match and free spins on a top slot game, it's a good way for new players to test out this casino site.
Key Benefits:
✔️ Flexible Double Welcome Bonus - Double welcome bonuses are a great way to get started at a new casino as it gives you a chance to test out a wider range of games on-site
✔️ Top Slot Free Spins - The free spins are to be played on Big Bass Bonanza, which is one of the most popular slot games on the casino market
✔️ Generous Maximum Win - The €100 limit attached to the free spins component of the bonus is quite generous when compared to other casino sites
Who is This Bonus Best For?
✔️ This versatile double welcome bonus is well-suited to any sort of casino player as the bonuses can be used both on slots and classic casino table games
666 Casino offers offers plenty of ongoing promotions for existing players.
Their Daily Spin Frenzy Challenge gives players a chance to win up to 50 free spins every day of the week.
There are also tournaments and leaderboards run by third party software providers.
666 Casino has a Rewards program, but at the moment it’s not open to UK players, so I’m hoping it will be expanded at some point in the future.
You might prefer to stick to simple deposit and withdrawal methods like Visa and Mastercard (or Apple Pay if you’re on an iOS mobile device), but 666 Casino also has other options like PayPal, MuchBetter, Trustly, paysafecard and Skrill.
While they claim that most withdrawals should be instant, it is a good idea to allow up to two days for e-wallets and up to six days for bank card payments.
I followed the full 666 Casino login process as part of my review, right from the sign up stage. Once I’d entered my information, I could navigate around the site and see all of the games, but I couldn’t actually deposit until I had submitted my documents.
Whenever you sign up at a new online casino, you should expect to be asked to verify your account. This is part of licensing and it’s actually a good thing, because it ensures you stay safe.
I noticed that there’s an option to upload documents directly, so you don’t have to get in touch with support to do it.
It won’t take more than 48 hours for your documents to be verified, but in my experience it’s usually much quicker at other casino sites.
666 Casino offers an impressive games library of 2,000+ casino games.
Focus on New Slot Releases
666 Casino claims to add 40-50 new casino games to their site each month.
With this sort of commitment, you can be assured that any brand-new best online slots will be available at this casino.
Plenty of Jackpot King Jackpot Slots
Jackpot King has played a major role in the growing popularity of jackpot slots among UK players, and you'll find a good selection available here.
With progressive prizes on well-known titles like The Goonies Megaways and Fishin' Frenzy Megaways regularly reaching seven figures, these games offer a strong appeal for jackpot enthusiasts.
Premium Live Casino
Live casino fans are well-catered to as well, with 150+ live dealer tables available.
Provided by Evolution Gaming and Pragmatic Play Live, you can be assured of the most authentic live casino experience possible.
Company Information
Email:
support@666casino.comAddress:
Website:
666casino.comSocial:
I found the mobile casino app experience at 666 Casino a little confusing. I couldn’t find the apps when I searched directly in the App Store and Play Store, but the download links on the site work.
The apps have okay ratings, but they’re not amazing. Most of the bad reviews were about poor customer support or lack of bonuses, so there doesn’t seem to be anything wrong with the actual app.
I gave it a try and was pleased to see that all of the games are available and the app worked smoothly on my iOS device.
I also had a look at the browser-based mobile site and while it’s not the most modern visually, it worked fine and it was easy enough to navigate.
I was slightly disappointed to see that the customer support hours at 666 Casino are from 8am to midnight CET (7am to 11pm UK time).
You can use live chat or complete a form on the site, but I’d recommend live chat.
I contacted support a few times while I was researching for my 666 Casino review and even at times when volumes were described as higher than usual, I never waited more than two minutes for help.
The first mention I saw of responsible gambling was as soon as I’d signed up, which impressed me. I could set deposit limits and session time limits immediately.
You can set further limits, for example reality checks, via your account section.
You can also self-exclude for a period of between six months and five years, but if you want to extend this for longer, the support team can help.
Here are a few things to consider before signing up:
Customer Support is Not 24/7
Customer support is only available between the hours of 7am and 11pm.
Any urgent customer support requests outside of those hours will have to wait.
No VIP Program
The 666 Casino VIP program is not currently available to UK players.
Up to 48-Hour Verification
I know that this can be much quicker, but when I sign up at a new online casino, I don’t really want to be waiting around for up to two days before I can play.
While the devil-themed branding might be a bit cheesy for some, the overall gaming experience at this casino is solid.
They offer a varied selection of casino games - including an impressive range of new slots, jackpot slots and live dealer tables.
In addition to this, players can find plenty of ongoing promotions and instant withdrawals.
There are some shortcomings that I need to highlight, though. The absence of a UK VIP program is a disappointment, while the lack of 24/7 customer support might also frustrate some.
Still, 666 Casino offers a unique theme and thousands of premium casino games, so it is definitely an option I can recommend to new players.
Our casino evaluations incorporate user ratings and feedback. Share your thoughts on 666 Casino here:
Company Information
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666casino.comSocial:
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