Onyx Slots Sister Site

Onyx Slots, a online casino hosted by the Grace Media Limited platform, operates alongside several other sister sites.

Breakdown of Onyx Slots

Current Promotion

Onyx Slots

Bonus: Wager Free Spins Welcome Package

Promotions: no wager bonus

Free Spins: 50 Bonus Spins

Wager Requirement: None

Minimum Deposit: £10

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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.

Siter Sites hosted by Grace Media Limited

Hotstreak Casino

Deposit £20 & Get 100 No Wager Free Spins

Is Licensed By: UKGC

terms and conditions

First deposit only. Min deposit £20. Min wager £20 on slots. Max 100 free spins. Max one claim. Spin credited within 7 days after deposit. Spins valid on Big Bass Splash. Spin Value 10p . Full T&Cs Apply 18+

Vegas Wins Casino

Welcome Bonus up to £500

Is Licensed By: UKGC

terms and conditions

New players only, First 3 deposits only. Min deposit £10. Max total bonus £500 and 150 spins. 30x wagering (dep + bonus). 30x on spins, 4x conversion, bonus and spins valid on selected slots. T&C’s appl

Cosmic Spins Casino

100% up to £100 Welcome Match Deposit Bonus

Is Licensed By: UKGC

terms and conditions

First deposit only. Min deposit £10. 100% Bonus Match on 1st deposit, max £100 bonus; 100 bonus spins on Starburst. 40x wagering(dep+bonus). 40x on spins, 4x conversion, bonus valid on selected slots. Full T&Cs apply. #AD, 18+ only, begambleaware.org

Pros

Video Slots featured at Onyx Slots as of June 2025

Whispering Winds Slot

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£ (in UK 5£)
  • Provider: Play'n GO
  • Paylines: 25

Vikings

Vikings

Tag along with the Vikings as they cross the oceans to conquer Britain, hunting for hidden treasures and massive wins. What jackpots do the wild slots hold? Let’s get spinning and uncover your fortune!

Vikings Features:

Features
  • Free Spins
  • Expanding Rows
  • Expanding Symbols
  • Wilds
  • Mystery Symbols
  • Scatter Symbols
  • Autoplay
Type
  • Theme: Modern
  • Volatility: High
  • Volatility: Medium
Stats
  • Release Date: 2018-11-22
  • RTP (Return to Players): 96.05%
  • Reels: 5
  • Min Bet: 0.20£
  • Max Bet: 100£ (in UK 5£)
  • Provider: NetEnt
  • Paylines: 243

Neon Staxx

Neon Staxx

Let’s travel back to the ’80s — a world full of neon lights, purple and pink gradients — in this classic yet relatively new online slot, which offers big payouts and exciting free spins.

Neon Staxx Features:

Features
  • Free Spins
  • Autoplay
  • Scatter Symbols
  • Respins
  • Wilds
Type
  • Theme: Classic
  • Volatility: Low
  • Volatility: Medium
Stats
  • Release Date: 2015-06-24
  • RTP (Return to Players): 96.9%
  • Reels: 5
  • Min Bet: 0.2£
  • Max Bet: 100£ (in UK 5£)
  • Provider: NetEnt
  • Paylines: 40

Finn and the Swirly Spin

Finn and the Swirly Spin

Do you have the true luck of the Irish? Then try your hand at the online slot Finn and the Swirly Spin, and see what Finn has in store—big payouts, sparkling golden bars, and magical slot features await!

Finn and the Swirly Spin Features:

Features
  • Free Spins
  • Expanding Wild
  • Wilds
  • Instant Wins
  • Multipliers
  • Scatter Symbols
  • Autoplay
Type
  • Theme: Modern
  • Volatility: Low
Stats
  • Release Date: 2018-03-01
  • RTP (Return to Players): 96.62%
  • Reels: 5
  • Min Bet: £
  • Max Bet: 0.10£ (in UK 5£)
  • Provider: NetEnt
  • Paylines: 200

Gemix 100

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:

Features
  • Free Spins
  • Respins
  • Autoplay
  • Wilds
Type
  • Theme: Modern
Stats
  • Release Date: 2024-08-29
  • RTP (Return to Players): 92.2%%
  • Reels: 7
  • Min Bet: 0.1£
  • Max Bet: 100£ (in UK 5£)
  • Provider: Play'n GO
  • Paylines: 10

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