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18+, new players only. Deposit and wager £10 minimum on slot games to receive up to 20 cash spins. Players can qualify for this promotion five times during the promotion period. Players can receive a max of 100 cash spins valid on Zeus vs Hades Gods of War. Spin value: 10p per spin. Total winnings earned from cash spins are awarded in cash funds up to a maximum of £100. Credited spins remain valid for 5 days. Please gamble responsibly. Full and Bonus apply. BeGambleAware.org.
What Onyx Slots looks like
See what Onyx Slots Casino looks like on mobile phones.
Summary
Onyx Slots is an online gambling site launched in 2024. As a member of the prominent Grace Media casino family, Onyx Slots offers a high-quality experience on both desktops and mobile devices. On the flip side, it only has a few live dealer games and fees on small withdrawals.
Bojoko rating
3.9
Bonuses
Banking
Games
Support
Usability
Pros:
A mobile-friendly site
Wager-free spins for 5 first deposits
Hundreds of slots
Cons:
Fees on withdrawals under £30
Tiny live dealer section
No category for jackpot games
Low maximum win caps on welcome spins
Deposit methods
Withdrawal methods
Onyx Slots Review
Onyx Slots is an exciting online casino launched in early April 2024 and operates on the well-known Grace Media platform. Onyx Slots delivers a highly rewarding experience with lucrative bonuses, new games to try, and fun on the go with a fully optimised mobile casino.
The casino focuses largely on slot games, but the lobby covers also jackpots, live dealer games, blackjack, and some fun scratchers. It also gets new players started with a bang by offering up to 100 no-wagering bonus spins on the first five deposits!
Onyx Slots is a high-quality site, mainly thanks to its well-designed platform, which performs beautifully on mobile screens as well. The game selection is nice, although it could have a bit more variety—especially in the tiny live dealer games section.
The site is easy to navigate and even for those new to the world of online gambling, Onyx Slots ensures a smooth first day as it provides 24/7 support via email, live chat, and even phone.
Compared to other UK casinos, Onyx Slots is a solid choice given its nicely laid out site, user-friendliness, and good support. Yet, if it would add some more payment methods, remove fees on small withdrawals and grow its game library in both size and variety, it could easily become one of the best sites out there.
Onyx Slots offers a nice package of no-wagering spins for new gamblers:
Deposit and wager at least £10 on slots to receive up to 20 cash spins!
You can get the same deal for your five first deposits, meaning that you can collect up to 100 wager-free spins that have no further wagering requirements.
The spins are on the slot Zeus vs Hades: Gods of War, and they're valued at 10p per spin. The casino credits the spins to your player account usually within 15 minutes after you've successfully wagered at least £10 on slots.
The winnings from the spins are wager-free cash, so you can withdraw it or continue playing with it. However, the total winnings from the spins are capped at £100. This means that you can't collect more wins from the cash spins than £100.
While I enjoy getting some no-wager spins for my deposit, the cap on the winnings is a bit of a bummer. But, seeing how easily the spins can be claimed, the win cap doesn't bother me that much. Overall, I see this bonus as a nice little boost.
Significant terms: 18+, new players only. Deposit and wager £10 minimum on slot games to receive up to 20 cash spins. Players can qualify for this promotion five times during the promotion period. Players can receive a max of 100 cash spins valid on Zeus vs Hades Gods of War. Spin value: 10p per spin. Total winnings earned from cash spins are awarded in cash funds up to a maximum of £100. Credited spins remain valid for 5 days. Full and Bonus apply. Please gamble responsibly. BeGambleAware.org.
At the moment, Onyx Casino's only spin offer is the wager-free spins you can claim with your five first deposits and by wagering at least £10 on slots each time. By doing this, you can get up to 100 extra spins that pay winnings in cash.
VIP / Special promotions
At the moment, Onyx Slots doesn't have a separate VIP promotion program.
To stay up to date with Onyx Casino's special promotions, opt to receive marketing emails and SMS messages. You can also check their promotions page to see if there's anything interesting going on.
Compare Onyx Slots casino bonus
Onyx Slots provides up to 20 cash spins when you make your first deposit and wager at least £10 on slots. While this offer can be claimed up to five times, the win cap of £100 sets a pretty harsh maximum limit on the offer's value.
Compared to similar deals from other casinos, Onyx Slots isn't anything new; it's actually quite ordinary. However, there are deals that have a better overall value. You can compare this deal yourself by using the tool below.
Onyx Slots offers a good range of slots but that's about it. While there are hundreds of classic and modern-day video slots available, there are only a few table games and a handful of jackpots.
The game lobby is nicely laid out and works well even on smaller mobiles. The games are divided into categories like Welcome Slots and Hot Slots. You can also search for games by name or choose to see only those from a certain provider.
The game selection offers little to say. There's plenty to explore for slot enthusiasts but practically nothing for everyone else.
If you want better variety, we've collected casinos that have biggest game selections. You can see all the casinos with most games if Onyx Slots wasn't what you were looking for.
Desktop game information
Games: 720
Slots: 700
Table games: 16
Jackpot games: 50
Crash games: 4
The number of games is an approximation at the time of writing the review. The numbers may change when new providers are included and new games are added.
Onyx Slots has a tiny live dealer section with games from Ezugi. Some of the titles found here are Prestige Auto Roulette Live, Sic Bo Live, 32 Cards Live, and Andar Bahar Live.
This set of a dozen titles is no match for the best live casino sites, which might interest you if you love live dealer games.
Live game information
Total number of live casino games: 12
The number of games is an approximation at the time of writing the review. The numbers may change when new providers are included and new games are added.
Onyx Slots Casino doesn't offer a downloadable app because the Grace Media platform is fully optimised for mobile devices.
You can navigate to the casino directly by using your mobile's browser, and all the games open and run natively in the browser as well, with no need for additional software.
I rather liked my mobile experience with Onyx Slots. The site feels intuitive, and everything I could ever wish for is only a few taps away.
See the accepted payment options at Onyx Slots with minimum deposit and withdrawal limits:
Payment method
Min deposit
Min withdrawal
Possible fees
Visa
£10
£10
£1.50 fee if withdrawal under £30
Mastercard
£10
£10
£1.50 fee if withdrawal under £30
PayPal
£10
£10
£1.50 fee if withdrawal under £30
Trustly
£10
£10
£1.50 fee if withdrawal under £30
MuchBetter
£10
❌
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The payment methods available at Onyx Casino are a tad limited, but at least they support card payments and the most popular eWallet, PayPal.
The average withdrawal time at Onyx Slots is 1-3 working days. The casino asks that you allow up to 48 hours for it to process your withdrawal request, after which the money will be sent to you via the payment method you chose.
Here's the detailed list of withdrawal times per banking method:
Mastercard: 1-5 working days
Visa: 1-5 working days
PayPal: 0-1 working days
Trustly: 0-1 working days
Onyx Slots' withdrawal times are typically pretty fast, especially if you withdraw using eWallets. If you like getting your winnings from casinos as fast as possible, check out our UK casinos with the fastest withdrawals.
Onyx Slots offers around-the-clock support every day, 365 days a year. You can contact them via email, live chat, or by texting. The phone number for Onyx Slots support is +447458159505.
To send an email, you need to fill out the contact form, which can be found in Onyx Slots' help centre.
The casino also provides a good FAQ page. It contains pretty much all the essential information and answers to typical questions, such as what to do if you forget the password or how withdrawing works.
Email support: ✅
Live support: ✅
Phone support: ✅
Onyx Slots needs to comply with UKGC's rules, which means the casino has to carry out certain verification processes to ensure no underage people get to gamble on the site and that players are who they claim to be.
The KYC process entails:
Verifying your ID
Verifying your age
Verifying your address
This happens by providing Onyx Slots with proof of identity (passport or driving licence) and proof of address (utility bill or bank statement). Additionally, the casino may require you to prove your payment option and source of funds.
The documents can be uploaded to the casino via your account. If you have any issues, don't hesitate to contact support.
Onyx Slots is a safe casino. Its safety is ensured by the UKGC's licence, and all of the casino's games use a Random Number Generator, which guarantees fairness.
Onyx Slots also encourages players to enable responsible gambling limits. You can set a reality check, deposit limits, and cool-off periods.
You can also self-exclude at any given time.
Remember that casinos are businesses that aim to make money and that, in the long run, the house always wins.
Onyx Slots is owned by Grace Media, which operates several casino sites in the UK. Therefore, Onyx Slots has numerous sister sites, which include:
SlotStrike: SlotStrike Casino has an interesting aggressive military vibe and plenty of high-quality games. Like Onyx Slots, it boasts great customer service and an easy-to-use site with a smooth KYC process.
PlayUK: Designed for UK punters, PlayUK Casino offers a fair and transparent casino with bonuses, fun games, and good payment methods. Established in 2018, the site has since become a fan favourite.
HotStreak Casino: HotStreak is a simple and well-built online gambling site with a UK licence. Similar to Onyx Slots, the live dealer section here isn't anything to write home about, but the range of slots is great.
You can check all of Onyx Slots Casino's sister sites on our page dedicated to Grace Media casinos.
FAQ
Onyx Slots is owned and operated by Grace Media, which operates several UK-facing online casinos, such as SlotStrike and PlayUK.
Yes, Onyx Slots is a legit online gambling site with a licence from the UKGC.
No, you can get the bonus for Onyx Slots without a bonus code.
Onyx Slot's wager-free spins are game rounds from which you can win money. The money you win from the spins is paid in cash, and you can even withdraw the winnings right away if you want.
You can claim the spins when you deposit and wager at least £10 on slots. After that, you get 20 spins to the slot Zeus vs Hades: Gods of War and keep what you win.
You can get up to 100 wager-free spins from Onyx Slots by depositing £10 or more and wagering it once on slots. This gets you up to 20 no-wagering spins.
Then, you can repeat the deposit and one-time wagering four more times, and each time you get wager-free spins.
Kati Saari has worked in the gambling industry since 2014. She has tested hundreds of casinos and written thousands of articles while evolving into an iron-clad expert in her field. Having a true passion for her work she’s adamant about not rushing into anything without thorough research.
Methodology
This review was made independently by Bojoko’s casino expert. Rating score is based on both
quantitative and qualitative factors: bonuses, game selection, payment methods, customer service and usability.
The review method is uniform for all casinos affiliated with Bojoko, so you can easily compare this casino with other brands.
