Onyx Slots Review (Casino) 2025 – Is It Safe and Legit?

Onyx Slots has some interesting casino promotions! I enjoy slot games, so I was particularly attracted to their welcome bonus and ongoing free spins, which are quite simple to gain. Onyx Slots offers promotions with bonuses, but I felt something was lacking, such as a no deposit bonus or a VIP program. Here's what I found out when I explored the promotions on my phone:

How to Claim Onyx Slots Bonuses (Step by Step)

• Register or log in to your Onyx Slots account.

Claim Onyx Slots Bonuses Guide

• Deposit at least £20 using payment methods like PayPal or Visa.

Claim Onyx Slots Bonuses Guide

• Opt-in via the promotions page (no bonus code/promo code needed in my test).

Claim Onyx Slots Bonuses Guide

• Meet betting limits or deposit requirements[1] .
• Free spins are credited within 24 hours (or up to 3 days for Weekly Wheel).
• Track bonuses in the promo centre on the Onyx Slots Mobile App or desktop.

Does Onyx Slots Have a Casino Welcome Bonus?

Yes, Onyx Slots offers a welcome bonus of up to 100 wager-free spins on John Hunter and the Book of Tut. 

Onyx Slots Casino Welcome Bonus

Onyx Slots Aviator – Is It Available?

Onyx Slots doesn’t offer instant games like Aviator, Plinko, Dice, or Mines. I checked the instant games section and found only scratchcards. If you’re after fast-paced gambling, the slot games library compensates, but Onyx Slots Originals or crash games are absent.

Onyx Slots Casino Promotions – Can You Get Them?

Yes, casino promotions are available. 

Weekly Rewards Club: Keep the fun rolling with weekly Free Spins! Deposit and wager £25 on slots to grab 10 spins, or £50 for 20 spins. Spins are credited every Monday on top slots like Big Bass Bonanza 1000, Cowboys Gold, or Lucky’s Wild Pub.

Weekly Rewards Club

Deposit & Wager £15 for 10 Free Spins on Club Tropicana – Happy Hour: Bring the tropical vibes to your play! Deposit and wager £15 to unlock 10 Free Spins on the vibrant Club Tropicana – Happy Hour slot. Limited-time offer, so don’t miss it. 

Deposit & Wager £15 for 10 Free Spins on Club Tropicana – Happy Hour

Weekly Wheel Drops & Daily Tournaments: Compete for huge prizes in 168 daily tournaments awarding £20,000 each, plus spin the Weekly Wheel for your shot at up to 100,000x your bet! With 47,000 prizes, including cash and free spins, there’s something to win every week.

Weekly Wheel Drops & Daily Tournaments

£2K Cash Drop: Celebrate the long weekend with your chance to grab a share of £2,000 in cash! Deposit and wager £10 for an entry into the draw—up to 10 chances available. Winners revealed on 26th August.

£2K Cash Drop

Big Bass O’Luck – Long Weekend Prize Drop Dive into five days of action with £50,000 in prize drops. Place real-money bets on participating games and you could randomly win up to £1,000 in cash. No minimum bet required.

Big Bass O’Luck – Long Weekend Prize Drop

These ongoing promotions keep the active player community engaged, but I’d love to see rakeback & cashback or no deposit bonus options added. Check the promotions tab for updates.

Onyx Slots VIP Club & Loyalty Program – How It Works

Onyx Slots lacks a VIP program or loyalty scheme.

Onyx Slots Sports Betting Promotions

Onyx Slots does not have any sports betting component, meaning you won’t find free bets, odds boosts or event-based promotions like football betting, snooker betting, rugby betting, or bet on cricket specials. The platform focused on slot games and live casino games, with all of its casino promotions directed towards this.

Other Promotions & Limited-Time Offers

Apart from the Daily Mystery Spin and Weekly Lucky Wheel, Onyx Slots has no information regarding Telegram Challenges, daily races or weekly raffles. I browsed the promotions tab, and it included all those items as the sole active promotions. If you want the best deals, check the promotions tab on their website or the Onyx Slots Mobile App.

Finding my way around Onyx Slots was very simple, particularly because of the modern user experience and bright graphics aimed at slot gamers. The navigation at Onyx Slots is also simple, in that the tab options for slot games and live casino games are located directly below the welcome bonus banner. Whether you are a first-time online gambler or have years of experience, you will definitely appreciate the fast-loading pages and simple, clean layout. I have tried it on both desktop and the Onyx Slots Mobile App, and I had a very nice user experience overall.

Onyx Slots Mobile Experience

The Onyx Slots Mobile App for both iOS and Android are a breakthrough for mobile compatibility. I downloaded the Android version, and it operates very much the same as the desktop version, and the oversight of touch-enabled menus and slimmed-down game views is brilliantly reflective of games such as Starburst to allow for an exceptionally ergonomic experience. The betting markets for the live dealer games were only a few clicks away, and the payment methods worked perfectly. All functionality of the desktop is preserved, including live chat support, which makes for excellent mobile gaming.

Onyx Slots Desktop vs. Mobile – What’s Different?

The desktop and Onyx Slots Mobile App have a similar lively layout, but the mobile app feels more intuitive for quickly placing live casino bets with its touch controls. The desktop offers a wider, larger screen for browsing slot games, which enhances the user experience a little, but each online casino has the same online casino promotions and table games regardless of what platform you are on. No exclusive mobile features stand out, but having mobile-compatible gambling is great for seamless play.

Onyx Slots focuses on casino gaming, offering a robust selection of slot games, table games, and live casino games. Here’s a quick overview:

Onyx Slots’ customer support is top-notch. The live chat support, available 24/7, connected me to a polite agent instantly. Texting their SMS number (+447458159505) got a quick reply, and emailing onyxslots@gracemediasupport.com was efficient, with responses within hours. The FAQ section covers common queries, making it a robust system for the active player community.

Onyx Slots Complaint Procedure (UK)

Onyx Slots is committed to managing customer concerns fairly and transparently. Their complaints process is designed to ensure issues are submitted, tracked, and resolved in line with UK Gambling Commission requirements.

1. How to Submit a Complaint: To raise a complaint regarding Onyx Slots’ service, players can contact the Support Team by live chat, email, or SMS. It’s recommended to include as much detail as possible so the matter can be handled efficiently.
2. Complaint Review: Complaints are usually acknowledged within 3 working days. If a longer investigation is required, Onyx Slots will keep customers informed of progress. In most cases, internal resolution is completed within 8 weeks. Customers can check the status of their complaint through their account or by following up via email.
3. Escalation Options: If the initial outcome is unsatisfactory, the matter can be escalated to a supervisor or manager. They will review the case again and aim to provide an updated response within 10 working days, keeping the player updated throughout.
4. Independent Dispute Resolution: If the complaint relates to activities licensed by the UK Gambling Commission and remains unresolved after Onyx Slots’ internal process has been completed, customers can refer the matter to an independent dispute resolution (IDR) service. Onyx Slots works with eCOGRA, a free third-party adjudicator for gambling disputes. Cases can be submitted through ecogra.org, provided the customer has received a “deadlock letter” from Onyx Slots and the referral is made within 12 months of the original complaint.

Common Customer Issues & Quick Solutions

Onyx Slots provides a range of payment methods, all of which I tested thoroughly for speed and reliability. Deposits are instant, and with fast payouts, you can typically expect a withdrawal to be processed within 24-72 hours. Deposits and withdrawals between £10 and £30 are subject to a 15% processing fee - so bear this in mind when funding your account.

Deposit Bonus Eligibility and Triggers

How Bonuses Affect Withdrawals