Onyx Slots

Onyx Slots Sister Sites 2026

Grace Media (Gibraltar) Limited is a casino network company that’s been through a lot of changes in recent years, including moving its entire head office from Manchester to Gibraltar – presumably to take advantage of the friendlier tax conditions on “The Rock.” It’s also closed down a whole load of former Onyx Slots sister sites and introduced new ones like Mango Spins, Jackpot Molly and Vegas Kings Casino. Here, we’ll be taking a closer look at those sites and also undertaking the internet’s most detailed review of Onyx Slots.

Mango Spins

Fruits have been the inspiration for online casinos for as long as online casinos have existed, and for quite a long time before that, too. That’s why slot machines used to be called “fruit machines” or simply “fruities.” When we talk about those classic fruit connections, though, we’re talking about lemons, cherries and plums rather than the more exotic twist you’ll find at Mango Spins, which is one of the newer members of the Onyx Slots sister sites family. As with most of the more recent additions to the platform, the design of Mango Spins is based on a fairly basic template. It looks fine – it’s clean and modern enough – but the sameness of the design means that the casinos that use it often look like much of a muchness. Still, there’s a solid selection of slots and promotions at Mango Spins, and for most players, that’s the point of a casino site.

Vegas Kings Casino

We’ve been reviewing and comparing online casinos for a very long time now, so we’ve seen what feels like one thousand takes on the Las Vegas theme. If we’re being honest, Vegas Kings Casino doesn’t rank up there with the best of them. Almost zero effort has been put into the theme, with even the logo feeling uninspired. If you’re going to use a Vegas theme you need to put some glitz and glamour into it, else you might as well not bother. Vegas Kings Casino uses the same design as Mango Spins and so many of the other Onyx Slots sister sites, which means it fades into the background a little when you compare it to the very best casinos on the network. Again, though, it’s redeemed by the quality of its bonuses and the games that it offers, which mirror those we just saw at Mango Spins.

Hot Streak Casino

Hot Streak Casino looks just like the other two Onyx Slots sister sites we’ve looked at so far. You can see that just by looking at the screenshot below. However, Hot Streak is one of Grace Media’s most popular online casinos, and we’re not sure why. It joined the platform in 2023 and started doing big numbers almost immediately. That’s despite the fact that it doesn’t even seem to be sure about what it wants to be called. The logo, which you can see above, very clearly names the casino as Hot Streak Slots. The site’s web address, on the other hand, is hotstreakcasino.com. We’ve gone with the latter for our purposes because that’s how the casino’s name appears on the operator’s UK Gambling Commission record, but it’s a bit confusing. As for the promotions, games and other material factors – they’re all identical yet again.

Jackpot Molly

Who’s Molly, and what’s she done with our jackpots? Those are both good questions, but we’re afraid we don’t have answers for either of them. We don’t know why this member of the Onyx Slots sister sites family is called “Jackpot Molly.” We do know, however, that it went live during the second half of 2023, so it’s comparable to Onyx Slots in terms of both its age and the features that it offers. Then again, we’ve said almost the same thing about all of the other Grace Media casinos we’ve looked at on this list so far. While an Irish theme based on the name “Molly” might have brought Jackpot Molly to life a little bit, it’s still a perfectly good casino site with just as much to offer as most of the other online casinos in the Grace Media family. It just isn’t anything special.

Planet Rock Casino

Most people will feel that Planet Rock Casino is the biggest and best of the Onyx Slots sister sites, and there are good reasons to hold that opinion. One is that it’s the only casino on this operator’s entire platform to have a big-name branding deal, being the official iGaming presence of Planet Rock Radio. Another is that, unusually for the casinos on this network, it has a unique look and a particular focus. Unsurprisingly, that focus is rock music. The branded jukebox slots of some of the biggest bands and artists in the history of rock music are plastered all over the casino’s homepage, including Guns n’ Roses, Jimi Hendrix and Ozzy Osbourne. If you’re someone who loves casino games but also loves your music loud, it’s hard to imagine where you’ll find an iGaming site better suited to your interests.

Can Onyx Slots Be Trusted?

★★★★★

Onyx Slots is a 4-star trusted casino.

1. Licenses and Fines	Onyx Slots is covered by UK Gambling Commission licence 57869, which is clean.
2. Accepts UK players?	While not all the casinos on this network accept UK players, this one does.
3. Trustpilot Score	N/A – There aren’t enough Trustpilot reviews of the casino for it to achieve a score yet.
4. Operator Name & Location	True to its name, Grace Media (Gibraltar) Limited is based in Gibraltar.
5. Bonus Terms	Wager-free bonuses.
6. Customer Support	A contact form and a bot-led chat service, but no phone support.
7. Withdrawal Speed & Options	Debit cards, PayPal, MuchBetter, Trustly. Withdrawals are processed in 24 hours where possible.
8. Number of Sister Sites	Grace Media operates around forty Onyx Slots sister sites in the UK.
9. Games portfolio	Something like 750 slots, plus live casino and instant wins games.
10. On GamStop?	Onyx Slots is on GamStop.
Overall SCORE >	★★★★★ – 4/5 Stars

Onyx Slots Review 2026

According to the dictionary, onyx is a semi-precious layered stone that can come in a variety of colours but is always dark and is often entirely black. That probably explains why the background of Onyx Slots, which launched in 2024, is also dark. We suppose it’s like calling the casino Ruby Slots or Diamond Slots, but Onyx Slots is a more original choice, and we salute Grace Media for that – especially since so many of the company’s casinos are almost identical in so many ways. Originality is hard to come by on this platform, but let’s see if Onyx Slots has managed it.

Onyx Slots Welcome Offers

Grace Media doesn’t like to stick to bonuses for long, and tends to change the welcome promotions on its most popular casinos every few months. That can make them hard to stay on top of, but as of the time of writing, the sign-up offer at Onyx Slots is one hundred free spins on John Hunter and the Book of Tut in return for an opening deposit of £20. The spins are played at a value of 10p each, and don’t appear to have a maximum value in terms of withdrawable winnings. That’s especially good news when you consider that the bonus is wager-free, so anything won from it is yours without any further complications or hurdles to clear.

Ongoing Promotions

Having spent most of 2024 beefing up its promotions, Grace Media spent most of 2025 shrinking them back down again. All of the matched deposit bonuses that Onyx Slots used to offer are gone, replaced by the staple of the Weekly Rewards Club. It offers ten free spins every Monday if you spent £25 or more during the previous week, or twenty if you spent £50 or more. The spins are, again, wager free and uncapped in terms of winnings.

There are other free spins offers to fill your boots with at Onyx Slots Casino, but they come and go in a matter of days, with an average shelf life of a week. You can likely get a few free spins on a popular slots game by depositing £10 or £20 on a specific day of the week, but you’ll have to check out the Promotions page of the casino’s website if you want to find out more. By the time we’ve finished writing about them, they’ll already be gone.

What are the Pros and Cons of Onyx Slots?

Pros: This is a casino that gets to the point very quickly. From the moment you land on its homepage for the first time, you can see what the welcome bonus is and what the top slots and games are. You can also see that the welcome bonus comes without any wagering requirements, which is a nice treat for newcomers.

Cons: As a whole, the casino is just a little too basic. The lack of any substantial ongoing promotions hurts it badly, and a tally of fewer than one thousand games means that the casino doesn’t keep pace with the best in the business. Being unable to provide instant or even same-day withdrawals goes against it on that count, too. It’s a perfectly solid casino, but it’s not one that’s likely to live long in the memory after you’ve played at it.

Top Games at Onyx Slots

The clue is in the name. Onyx Slots mostly focuses on slots, so the fact that it also has a live casino and a collection of instant win games is very much an afterthought. You’ll eventually find those categories if you go rooting through the side menus or scroll far enough down the homepage, but by that time, you’ll have seen dozens of the casino’s top slots. They’re grouped into categories to make them easier to find, and two of those categories are worthy of note. The first is “hot slots,” which is where you’ll find the slots that are the most popular with other players right here and now. They’ll change every time you visit the casino, but you can be fairly sure you’ll find Wolf Gold, Call of the Wild and at least one Big Bass Bonanza option here.

A little further down the homepage is the “Featured” section, where you’ll find the titles that Onyx Slots has chosen to highlight. They include Starburst and Fishin’ Frenzy, both of which are as safe as safe choices ever get. It’s interesting that the casino has opted to showcase Boat Bonanza in the same category, though, as it’s broadly seen as a lower-quality Big Bass Bonanza rip-off. Gold Cash: Big Spins is also in the Featured row, and is also a slots game we’re sure you’re already well aware of.

Withdrawal Processing and Support

Any UK-registered and verified debit card is fine for making withdrawals from Onyx Slots, but you’ll get faster results using Trustly or an e-wallet held with either PayPal or MuchBetter. If you request a debit card withdrawal on Monday, the earliest you’ll get it is the following day. However, in some circumstances, you might have to wait a full week until the following Monday. With Trustly or an e-wallet, on the other hand, your withdrawal should never take more than forty-eight hours. That’s the way to go if you have the option.

Customer Support and Licensing

There’s a live chat feature at Onyx Slots, but it’s run by a pretty basic bot. You’ll have to tell the bot to go away more than once before you’ll be connected to a real human, so that’s an annoyance. There’s a contact form you could use instead, but we have no idea how long it might be before someone at the casino picks the form up and gets back to you. Like all Grace Media (Gibraltar) Limited casinos, Onyx Slots is covered by UK Gambling Commission licence 57869, which is clean and free of fines or warnings. The same licence also covers the Onyx Slots sister sites.

Onyx Slots – The Verdict

Onyx Slots is a casino that you’re not going to get especially excited about unless you have a big win. It’s very hard to find any material differences between Onyx Slots and at least a dozen other Grace Media casinos, so if you’re a fan of the way this operator makes iGaming sites, there’s no reason why you won’t also like this one. It’s a little bland, though, and the lack of ongoing promotions or loyalty rewards might leave you feeling a little short-changed after a while. If we gave scores to the casinos we review, this one would be getting a fine but solidly unspectacular six out of ten.

Full List of Onyx Slots Sister Sites

Our highlights section above contains the top picks from this family of casinos, but how about all of them in one place? Here’s our complete, official Onyx Slots sister sites list.

Directtly Operated Onyx Slots Sister Sites

• Slots Rush (casino.slotsrush.com)
• Royal Valley Casino (royalvalleycasino.com)
• Hot Streak Casino (hotstreakcasino.com)
• BOGOF Bingo (bogofbingo.co.uk)

White Label Onyx Slots Sister Sites

• Jackpot Molly (jackpotmolly.com)
• Cosmic Spins (cosmicspins.com)
• Infinity Casino (infinitycasino.co.uk)
• Mango Spins (mangospins.com)
• Fortune Mobile Casino (fortunemobilecasino.co.uk)
• Chit Chat Bingo (chitchatbingo.com)
• Tiger Spin (tiger-spin.com)
• VIP Bet (vipbet.com)
• Jackpot Slot (casino.jackpotslot.com)
• Play UK (playuk.com)
• Mayfair Casino (mayfaircasino.com)
• Red Spins (redspins.com)
• Diva Casino (diva.casino)
• Rich Ride (richride.com)
• Royal Bets (royalbets.com)
• Slot Strike (slotstrike.com)
• Jackpot Mobile Casino (jackpotmobilecasino.co.uk)
• Rollbit (rollbit.co.uk)
• Panda Bingo (pandabingo.com)
• Red Pill Casino (redpillcasino.com)
• Planet Rock Casino (planetrockcasino.co.uk)
• 333 Casino (333casino.com)
• Fruity Wins (fruitywins.co.uk)
• Belgravia Casino (belgraviacasino.com)
• Slots Jungle (slotsjungle.com)
• Slotty Slots (slottyslots.com)
• UK Bingo (uk-bingo.net)
• Slotster (slotster.com)
• Dice Den (diceden.com)
• Chelsea Palace (chelseapalace.com)
• Vegas Kings Casino (vegaskingscasino.com)
• Love Wins Casino (lovewinscasino.com)
• Spinz Casino (spinzcasino.com)
• Jackpot Strike (jackpotstrike.com)
• Casinoroo (casinoroo.com)
• Ayahuma Casino (ayahumacasino.com)
• Spinslots (spinslots.com)
• Vegas Wins (vegaswins.co.uk)
• Deep Sea Casino (deepseacasino.com)
• 444 Casino (444casino.co.uk)