Onyx Slots Sister Site

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

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

Breakdown of Onyx Slots

Current Promotion

Onyx Slots

Bonus: Get 100 No Wager Free Spins

Promotions: no wager bonus

Games Applicable: Big Bass Bonanza

licensed by: UKGC

Minimum Deposit: £10

Visit More

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.

Pros

Video Slots featured at Onyx Slots as of August 2025

Busters Bones

Busters Bones

Buster's Bones takes us to the wild, wild West, where Buster the dog and his companion serve as the sheriffs in town.

Busters Bones Features:

Features
  • Free Spins
  • Multipliers
  • Autoplay
Type
  • Theme: Modern
  • Volatility: Medium
  • Volatility: High
  • Game type: Megaway Slots
  • Game Type: Cascade Slots
  • Has Bonus Feature
Stats
  • Release Date: 2023-04-20
  • RTP (Return to Players): 94.04%
  • Min Bet: £
  • Max Bet: £ (in UK 5£)
  • Provider: NetEnt

Butterfly Staxx

Butterfly Staxx

One of the most visually stunning slots, featuring sparkling-coloured reels and expressive symbols set in a glowing environment. It also delivers bursts of big payouts and jackpots, even on your mobile.

Butterfly Staxx Features:

Features
  • Free Spins
  • Respins
  • Wilds
  • Scatter Symbols
Type
  • Volatility: Low
  • Theme: Classic
Stats
  • Release Date: 2017-01-09
  • RTP (Return to Players): 96.80%
  • Reels: 5
  • Min Bet: 0.2£
  • Max Bet: 400£ (in UK 5£)
  • Provider: NetEnt
  • Paylines: 40

Merlin Realm Of Charm Slot

Merlin Realm Of Charm Slot

Step into a world of magic in Merlin Realm of Charm, where you’ll have the chance to land magical winnings—if luck is on your side.

Merlin Realm Of Charm Slot Features:

Features
  • Multipliers
  • Free Spins
  • Instant Wins
  • Autoplay
  • Respins
Type
  • Volatility: High
  • Theme: Modern
Stats
  • Release Date: 2024-01-13
  • RTP (Return to Players): 96.2%
  • Reels: 5
  • Min Bet: 0.1£
  • Max Bet: 100£ (in UK 5£)
  • Provider: Play'n GO

Arcane Reel Chaos

Arcane Reel Chaos

Are you a true superhero? If you're up for it, join the team for the chance to land some big wins and trigger extra spins.

Arcane Reel Chaos Features:

Features
  • Free Spins
  • Expanding Wild
  • Wilds
  • Multipliers
  • Scatter Symbols
  • Autoplay
Type
  • Volatility: Medium
  • Theme: Classic
Stats
  • Release Date: 2019-05-23
  • RTP (Return to Players): 96.81%
  • Reels: 5
  • Min Bet: 0.20£
  • Max Bet: 100£ (in UK 5£)
  • Provider: NetEnt
  • Paylines: 10

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