Onyx Slots Sister Site
Onyx Slots, a siter site 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+
PlayUK Casino
Welcome Bonus up to £100
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's & C's Apply.
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 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
Royale Lounge Casino
Bet £20 get 100 spins on John Hunter and The Book of Tut
Is Licensed By: UKGC
terms and conditions
First deposit only. Deposit & wager £20 on slots for 100 free spins. Max one claim per player. Spins valid on Big Bass Splash (10p each), credited within 7 days. Spins valid for 7 days. 18+. Full T&Cs apply
Lady Luckmore Casino
Bet £20 get 100 spins on John Hunter and The Book of Tut
Is Licensed By: UKGC
terms and conditions
First deposit only. Deposit & wager £20 on slots for 100 free spins. Max one claim per player. Spins valid on Big Bass Splash (10p each), credited within 7 days. Spins valid for 7 days. 18+. Full T&Cs apply
Breakdown of Onyx Slots
- Casino Name: Onyx Slots
- Launch Date: 2023
- Parent Company: Grace Media Limited
- Payment: Visa , Mastercard , Trustly , Paypal , Interac
- Software Providers: Netent , Playngo , Pragmatic , Microgaming , Redtiger , Irondog , Foxium
- Games: Slots , Livecasino , Slingo , Roulette
Current Promotion
Pros
- Wagering Free Free Welcome Bonus
- Top For Slots
- Fully Licensed
Video Slots featured at Onyx Slots as of September 2025
Divine Fortune Black
Enter the shadows with Divine Fortune Black™ — a darker reimagining of the classic Divine Fortune slot, where the same massive jackpots await.
Divine Fortune Black Features:
- Buy Bonus Game
- Scatter Symbols
- Free Spins
- Autoplay
- Wilds
- Instant Wins
- Respins
- Expanding Symbols
- Theme: Modern
- Game Type: Progressive Jackpots
- Volatility: High
- Release Date: 2025-05-13
- RTP (Return to Players): 96.08%
- Reels: 5
- Min Bet: 0.2£
- Max Bet: 20£ (in UK 5£)
- Provider: NetEnt
- Paylines: 20
Archangels Salvation
Join the battle between Archangels of good and evil, and enter the grid packed with 100 paylines. Who will win this eternal fight in the slot game?
Archangels Salvation Features:
- Free Spins
- Expanding Wild
- Wilds
- Expanding Symbols
- Respins
- Autoplay
- Multipliers
- Volatility: Medium
- Theme: Modern
- Release Date: 2018-01-16
- RTP (Return to Players): 96.08%
- Reels: 5
- Min Bet: 0.4£
- Max Bet: 200£ (in UK 5£)
- Provider: NetEnt
- Paylines: 100
Buffalo of Wealth
In Play’n GO’s Buffalo of Wealth, mighty beasts roam the wilds. With its tribal-inspired design, the game combines tradition and natural beauty with a modern slot-playing experience.
Buffalo of Wealth Features:
- Expanding Rows
- Free Spins
- Scatter Symbols
- Wilds
- Stacked Wilds
- Theme: Modern
- Volatility: Medium
- Release Date: 2025-07-31
- RTP (Return to Players): 96.2%
- Reels: 5
- Min Bet: 0.05£
- Max Bet: 100£ (in UK 5£)
- Provider: Play'n GO
- Paylines: 1024
Mafia Gold
Mafia Gold by Play’n GO is set in the world of a classic mafia theme, during the early years of the mafia era. This video slot is packed with unique bonus features, high-quality game art, and smooth gameplay, launched on August 1, 2024.
Mafia Gold Features:
- Wilds
- Multipliers
- Instant Wins
- Free Spins
- Expanding Wild
- Mystery Symbols
- Scatter Symbols
- Volatility: High
- Theme: Modern
- Release Date: 2024-08-01
- RTP (Return to Players): 96.2%
- Reels: 5
- Min Bet: 0.1£
- Max Bet: 50£ (in UK 5£)
- Provider: Play'n GO
- Paylines: 30
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:
- Free Spins
- Expanding Wild
- Wilds
- Instant Wins
- Multipliers
- Scatter Symbols
- Autoplay
- Theme: Modern
- Volatility: Low
- 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