Onyx Slots

Onyx Slots is a licensed UK casino site, holding a licence from the UK Gambling Commission.

This casino site is a new entrant in the gambling industry and has been actively promoting responsible gambling and fair play certification since 2023, establishing its legitimacy in 2025.

Is It Legit?

Onyx Slots is a relatively new casino site that is available to UK players. It has gradually built a solid track record by offering a secure platform with strong responsible gambling measures, reflecting the qualities of a legit casino site.

It also offers one of the most player-friendly welcome bonuses among new slot sites, with no wagering requirements and support for popular payment options.

All of this makes the casino a secure and appealing place to sign up.

Bonuses and Promotions

Onyx Slots offers a casino bonus that players can claim once their account is fully verified and a minimum deposit is made.

The casino provides both sign-up bonuses and ongoing bonuses for players who already have an account. These include no wager bonus, which are a common feature of any legit casino site.

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

licensed by: UKGC

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.

No Wagering Bonus

The casino offers a no-wagering bonus, giving new players free spins with no wagering requirements on selected slots.

To claim the free spins, players simply need to create a new account, make a minimum deposit, and use it on one of the selected no-wagering slots.

No-wagering slots are an excellent way to enjoy extra bonus spins without the hassle of wagering requirements.

How to Register an Account and Claim the Bonus

To login at Onyx Slots you will need to have a account, To create a new account and claim the bonus, click the "Visit" button above and follow these easy steps:

1. Click the "Register" or "Claim" button.
2. Fill out the form with your gender, name, date of birth, phone number, and email.
3. Accept the terms and conditions.
4. Once your account is verified and created, make a minimum deposit to claim the bonus.
5. After making the minimum deposit, you can claim the bonus once it has been activated.

We recommend claiming the bonus only after your account is created and you can successfully login on the website.

Game Lobby

The game lobby at Onyx Slots hosts slot games in all varriants, all accessible directly in the browser on any device, from mobile to desktop no need to download any apps.

Featured Casino Games June 2025

Gonzos Quest

The legend that is Gonzo's Quest™ meets MegaWays™ for wins of over 20,000x in the thrilling search for El Dorado! Tag along with Gonzo, the quirky bearded Spanish explorer, as he ventures through the deepest jungle in search of the long lost city of gold

Gonzos Quest Features:

Features

• Expanding Rows
• Respins
• Free Spins
• Wilds
• Multipliers
• Autoplay
• Expanding Wild

Type

• Theme: Classic
• Game Type: Avalanche

Stats

• Release Date: 2011-02-08
• RTP (Return to Players): 96%%
• Reels: 5
• Min Bet: 0.2
• Max Bet: 50
• Provider: NetEnt
• Paylines: 20

Tiki Fruits

Tiki Fruits is an Hawaiian themed online slot game which offers a mix of brilliant graphics and exotic fruits. The wins and rewards come from many features including Winning Clusters, Fruit Bars and Tiki Spins!

Lucky 6 Roulette

Lucky 6 Roulette lets players explore live roulette with a dealer at a European roulette table. During each spin, players can wager on the outcome involving six multiplayers at the table.

Whispering Winds Slot

Enter the hidden world of ninjas in this Asian-inspired slot, where vibrant visuals and the chance for big payouts come together for an exciting gameplay experience.

Whispering Winds Slot Features:

Features

• Free Spins
• Expanding Symbols
• Scatter Symbols
• Autoplay
• Instant Wins
• Multipliers
• Mystery Symbols

Type

• Theme: Modern
• Volatility: Medium

Stats

• Release Date: 2024-07-11
• RTP (Return to Players): 96.23%
• Reels: 5
• Min Bet: 0.05
• Max Bet: 100
• Provider: Play'n GO
• Paylines: 25

Summary

Onyx Slots is a legit casino site for players seeking the latest casino games, including Slots, Live Casino, Slingo and Roulette, along with a generous bonus, all in a safe environment.

Additionally, it features trusted software providers whose RTP data is verified by third parties. These providers are well-known in the gambling industry and have a strong track record for being legit and promoting responsible gambling.

Overall, this casino offers something for all casino players seeking a legit casino site in 2025, and we would rate it 4 out of 5 stars.

Pros

• Wagering Free Free Welcome Bonus
• Top For Slots
• Fully Licensed

Faq

Do free spins for a no wagering bonus come with a wagering requirement?

No, the free spins at Onyx Slots come with no wagering requirement. Once all free spins have been used, players can instantly withdraw any winnings from the free spins.

How do I claim the free spins for the no wagering bonus?

To claim the free spins in the no wagering bonus, you need to create an account and make a minimum deposit. Once the minimum deposit is wagered in the casino, you will receive the free spins in the banking section of the website.

Are the free spins non-cashable?

Yes, the free spins are non-cashable, meaning that players will need to wager all the free spins. If the free spins come with no wagering requirement, players can instantly withdraw any winnings from the free spins.