Onyx Slots is an new UK casino site launched in 2024 and is operated by Grace Media, a Gibraltar-based company with a UKGC licence. Onyx Slots welcome bonus is up to 100 wager-free free spins on Zeus vs Hades: Gods of War. With just a £10 deposit, you can unlock 20 free spins, and the bonus extends across your first five deposits. As a new Onyx player there are also a number of other rewards and ongoing promotions.
Read our Onyx Slots review for the low-down on how this online casino compares to other newly established UK betting sites.
Onyx Slots Casino Welcome Bonus and Promo Code – Get 100 No Wager Free Spins
| Onyx Slots Welcome Bonus | Up to 100 wager-free free spins |
| Onyx Slots Promo Code | Claim Bonus |
| Free Spins | Zeus vs Hades: Gods of War. |
| Bonus Structure | 5 deposits of £10 each, get 20 free spins per deposit. |
| Bonus Terms | Wager free, Minimum £10 deposit |
| Max Win Per Batch | £100 cap per batch of 20 free spins. |
| Time Limit | Used within 7 days of being credited. |
| Notable Drawback | £1.50 withdrawal fee for amounts under £30. |
| CasinoGambler Verified | 2024, UK, +18 |
When you create an account at Onyx Slots, you can unlock up to 100 wager-free free spins with a minimum deposit of £10. The welcome package is structured across your first five deposits as follows:
- Onyx Slots First Deposit = £10 for 20 free spins.
- Onyx Second Deposit = £10 for 20 free spins.
- Onyx Third Deposit = £10 for 20 free spins.
- Onyx Fourth Deposit = £10 for 20 free spins.
- Onyx Fifth = £10 for 20 free spins.
Though no wagering requirements exist, the maximum win (conversion) from each batch of spins is £100, capping the amount you can cash out if you land a win.
The free spins are available on the Pragmatic Play slot game Zeus vs Hades: Gods of War and have a standard value of £0.10 per spin.
Given the absence of wagering requirements, this is a highly attractive welcome bonus. For more wagering-free free spins, check out Midnite Casino, where you can unlock free spins for Big Bass Splash when you deposit and bet at least £10 as a new customer in 2025.
Onyx Casino Deposit Match Offer: Spins and Cashback for New Players
Onyx Casino offers an alternative welcome bonus that packs double the fun: bonus spins and cashback! Here’s how it works:
- Bonus Spins on Big Bass Splash:
- Deposit £10-£49.99 to get 50 spins.
- Deposit £50-£99.99 to unlock 100 spins.
- Deposit £100+ to claim 150 spins.
Spins are worth 10p each and activate when you launch Big Bass Splash. Winnings are credited as bonus funds with a 30x wagering requirement and a conversion cap of 4x the bonus amount. Spins must be used within 7 days, and bonus funds expire in 28 days.
- Up to £100 Cashback on Losses:
If you hit a rough patch, you can get up to £100 cashback on any losses from your first deposit, making this offer both rewarding and risk-reducing for new players.
This combination of spins and cashback is a great way to dive into Onyx Slots’ exciting gaming experience while keeping things balanced!
Onyx Slots Ongoing Promotions
Alongside the generous wagering-free free spins welcome package, Onyx Slots has several ongoing promotions available for all customers:
- Mystery Spin: Deposit at least £20 to receive one spin of the Lucky Wheel. You may receive up to 20 free spins every day.
- Drops & Wins: Play eligible Pragmatic Play games to win a share of £2,000,000 monthly.
- Weekly Wheel: Deposit at least £200 across seven days for a spin of the Onyx Slots Weekly Wheel. Free spins are up for grabs.
The ongoing promotions at Onyx Spins are similar to those at Casino Kings, where you can unlock weekly free spins and cashback as you play.
Onyx Slots Casino Popular Slots: 600+ Games
The library at Onyx Slots features over 600 casino games from studios like Pragmatic Play, Red Tiger, and Eyecon. Slots make up most of the game offering, with games like Shaman’s Dream, Starburst, and Irish Luck all popular.
If you want to win a share of £2,000,000 every month, you can spin the reels on Pragmatic Play’s Drops & Wins titles, including Release the Kraken Megaways, Sugar Rush 1000, and Vampy Party.
There are also 18 instant-win games available at Onyx Slots, with 9 Pots of Gold Land & Win, Maverick X, and Cash Booster Fly X within the library.
If you prefer classic casino games, the live casino offers various tables, such as Sic Bo, Space Invaders Roulette, Dragon Tiger, and Classic Blackjack.
However, the absence of live dealer game show releases from Evolution is a drawback. If you want to play games like Crazy Time, head to Casino Kings for Evolution’s full suite of games.
Onyx Casino Payment Options
Depositing funds at Onyx Casino is straightforward. The minimum amount accepted is £10, processed instantly and without fees. Also, when you make your first deposit of £10, you will receive 20 free spins for Zeus vs Hades: Gods of War.
Numerous payment methods are supported, including Mastercard, Visa, Trustly, PayPal, MuchBetter, Pay by Mobile, Fonix, and Monzo. You must use the same method for deposits and withdrawals.
When you withdraw, Onyx charges a flat £1.50 fee for processing amounts of £30 or less. Anything above £30 is not subject to a withdrawal charge.
We don’t like seeing withdrawal fees at online casinos – head over to Midnite Casino, where all withdrawals of £10 or more are processed without fees.
As for the processing time, debit card and Trustly payouts can take three to five days to reach your account, while PayPal withdrawals are typically available on the same day. Check out the table below for the full range of payment methods supported at Onyx Casino in the UK:
| Method | Deposits? | Withdrawals? | Min Deposit | Min Withdrawal | Processing Time (Withdrawals) |
| Visa | ✅ | ✅ | £10 | £30 (for free withdrawals) | 3-5 days |
| Mastercard | ✅ | ✅ | £10 | £30 (for free withdrawals) | 3-5 days |
| Trustly | ✅ | ✅ | £10 | £30 (for free withdrawals) | 1-3 days |
| PayPal | ✅ | ✅ | £10 | £30 (for free withdrawals) | 24 hours |
| Monzo | ✅ | ✅ | £10 | £30 (for free withdrawals) | 3-5 days |
| MuchBetter | ✅ | ❌ | £10 | N/A | N/A |
| Pay by Mobile | ✅ | ❌ | £10 | N/A | N/A |
| Fonix | ✅ | ❌ | £10 | N/A | N/A |
Onyx Casino Support
Onyx Slots is a real-money online casino operated by Grace Media, Gibraltar. The site has a UK Gambling Commission license (41645).
If you experience any issues when playing at Onyx Casino, you can contact the customer support team via live chat, accessible on the casino’s homepage. It’s best to log in first so the agent can help you with a problem related to your account.
You can also send an SMS to +447458159505 for real-time support over the phone. If you want to send an email or if your issue is related to ID verification, you can reach the team at onyxslots@gracemediasupport.com.
The Onyx Casino Verdict: Brilliant slots, bonuses and Decent Game Selection
Onyx Slots is an excellent online casino with some very impressive bonuses. Though there’s a win cap of £100, we love that the free spins are offered to all new players who deposit £10 or more without wagering requirements.
This makes the welcome bonus more attractive than offers at sites like Casino Kings, where the wagering requirements are high.
The 600+ games at Onyx Slots are enough to get you started, though there’s much more variety at Casino Kings, Midnite, and Mega Riches, where you can enjoy thousands of games from a broader selection of developers.
The biggest drawback to playing at Onyx Slots is the £1.50 charge for all withdrawals under £30. This is unnecessary, and we feel that it should be removed to offer a better experience for low-budget players.
