Onyx Slots

Onyx Slots is a UK online casino that offers no-wagering free spins, operates under a UK Gambling Commission license, and requires a low minimum deposit to get started. Its game lobby features the latest slot games from top-tier software providers, offering a mix of slots and table games.

If you enjoy playing slots on your mobile, you can access the casino directly through your web browser—no app download required.

Bonuses and Promotions

New players from the UK can benefit from a no-wager bonus. Simply create an account and make a minimum deposit to claim your wager-free spins.

No bonus code is needed—just deposit and spin. The free spins can be used on Big Bass Bonanza by Pragmatic Play.

The casino also runs ongoing promotions, including match bonuses, bonus spins, cash rewards, and other offers, which can be found in the My Account bonus section.

Onyx Slots: Active May 2025 Promotion for UK Players

Onyx Slots

Bonus: Wager Free Spins Welcome Package

Promotions: no wager bonus

Free Spins: 50 Bonus Spins

Games Applicable: Big Bass Bonanza

Wager Requirement: None

Minimum Deposit: £10

Visit

Onyx Slots Terms and Conditions: New Customers Only. $/€/£10 Min. Deposit and Wager. 20 Free Spins will be allocated for each of your first 5 deposits of $/€/£10 or more. Bonus valid 48 hours from receipt. Max conversion: $/€/£100. Withdrawal requests void all active/pending bonuses. Full terms apply 18+ T&C's | BeGambleAware® #AD.

How to Register and Claim the Bonus

To join Onyx Slots, just click the “Visit” button above and follow these steps:

• Click the “Register” or “Claim” button.
• Fill out the form with your personal details (gender, name, date of birth, phone number, email).
• Accept the terms and conditions.
• Once your account is verified, make a minimum deposit to activate the no-wager bonus.
• Claim the bonus from your account dashboard.

We recommend claiming the bonus only after your account is fully created and you can successfully log in.

Game Lobby

The game lobby at Onyx Slots includes a wide variety of casino games, such as:

• Slots (including Megaways and progressive jackpots)
• Table games like blackjack, roulette, baccarat, and poker
• Live dealer games, including game shows

These are powered by leading software developers like NetEnt, Pragmatic Play, and Evolution Gaming—trusted names in the UK online casino industry.

Featured Casino Games 2025

Dragon Kingdom: Eyes of Fire

A mythical dragon themed slot game from Pragmatic Play, these fantastical beasts will come to life and set the multiplier reel on fire (Up to 50x multiplier) awarding huge wins in a wake of their destruction

Dragon Kingdom: Eyes of Fire Features:

• 96.50% RTP
• Low- Medium Variance
• Max Win: x1
• 250 Your Stake
• 6 Level Progressive Mulitplier Feature
• Wilds
• Release Date: February 2021

Gemix 100

Gemix 100 by Play'n GO features a unique mechanic where 5+ matching symbols trigger wins, with new symbols filling the grid. The Crystal Charge and Wild Game modes add to its appeal, offering a fresh video slot experience, launched on August 29, 2024.

Gemix 100 Features:

• Category: Video Slot
• Provider: Play’n GO
• Theme: Fantasy Adventure
• Number of Reels: 7x7
• Number of Paylines: Match 5 or more symbols
• Minimum Bet: 0.01
• Maximum Bet: 0.10
• Jackpot Type: Non-progressive
• RTP (Return to Player): 96.20%
• Volatility: Low
• Max Win Multiplier: 25,000x
• Special Features: Cascading Reels, Wild Symbols, Chain Lightning, Light Beam, Crystal Warp, Nova Blast, Wild Rounds (Miner's World, Princess's World, Wizard's World)

Game Providers

Onyx Slots partners with top software providers such as:

• NetEnt
• Play’n GO
• Yggdrasil
• Pragmatic Play
• Thunderkick
• Microgaming
• EGT

These providers are RTP-certified, fully licensed, and deliver high-quality slot games with engaging bonus features, like free spins and re-spins.

RTP Rates

Most slots and table games at Onyx Slots offer RTP percentages above 95.98%. The featured no-wager slot, Big Bass Bonanza, has an RTP of 96.71%, making it one of the top picks for no wagering free spins.

Payment Methods

Onyx Slots accepts various payment methods, including:

• Visa
• Mastercard
• Skrill
• Neteller

All withdrawals are fee-free, with fast processing times (typically under 24 hours). A verified account is required before you can request a withdrawal, and you may need to upload documents for verification. There's the standard 24-hour pending window that a casino must go through to ensure they make the necessary security and anti-fraud checks, as well as check that you have completed all associated bonus wagering requirements (if applicable).

Is It Legit?

Yes, Onyx Slots is a fully licensed UK online casino, operating under the UK Gambling Commission. It promotes responsible gambling with tools like deposit limits and self-exclusion options.

Customer Support

You can reach customer support via:

• Live chat (hours may vary by location)
• Email
• FAQ section for quick answers

Note that support response times may be longer for withdrawals and payment-related queries.

How Does Onyx Slots Compare to Other UK Online Casino Sites?

• Kwiff Casino: This UK-licensed casino offers a generous number of no wagering free spins, but it requires a higher minimum deposit than Onyx Slots. This makes Onyx Slots more accessible for casual players looking for wager-free bonuses with a lower entry point.
• The Pools Casino: While this casino offers more free spins than Onyx Slots, it matches the £10 minimum deposit requirement. One standout feature is that it allows players to use their spins on Big Catch Bass Fishing, a popular slot game among fans in the UK.

When comparing this to other UK online casinos that offer £10 deposit bonuses, Onyx Slots ranks slightly lower in terms of the number of no wagering free spins rewarded when claiming the bonus.

Our Review

Our review highlights Onyx Slots as a top choice for UK players looking for no wagering free spins. Its no-wager bonus, mobile-friendly platform, and extensive selection of slot games make it an excellent pick among new UK online casinos.

The focus on fast withdrawals, top-tier game providers, and a secure, licensed environment makes it ideal for anyone seeking a modern casino site with low deposit requirements and wager-free bonuses.