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
- 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 , Live Casino , Slingo , Roulette
Current Promotion
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
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
- Wagering Free Free Welcome Bonus
- Top For Slots
- Fully Licensed
Video Slots featured at Onyx Slots as of July 2025
Reactoonz
Reactoonz is an alien themed slot which uses a cascading reels where you can win again and again from each spin. With each win, you charge up the meters to randomly trigger 1 of 5 Quantum features!
Reactoonz Features:
- Free Spins
- Respins
- Autoplay
- Game Type: Cascade Slots
- Volatility: High
- Release Date: 2017-09-24
- RTP (Return to Players): 95%
- Reels: 7
- Min Bet: 50£
- Max Bet: 0.2£ (in UK 5£)
- Provider: Play'n GO
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:
- Free Spins
- Respins
- Wilds
- Scatter Symbols
- Volatility: Low
- Theme: Classic
- 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
Seregeti Kings Slot
This online slot takes you on a safari through the wilds of Africa, where you’ll come face-to-face with the kings of the savannah, from roaring lions to sleek panthers. With a backdrop set deep in the heart of the savannah, the game delivers a classic slot experience packed with the potential for big wins, especially when luck is on your side.
Seregeti Kings Slot Features:
- Free Spins
- Respins
- Wilds
- Multipliers
- Theme: Modern
- Volatility: Medium
- Volatility: High
- Release Date: 2020-01-01
- RTP (Return to Players): 96.7%
- Reels: 5
- Min Bet: 0.10£
- Max Bet: 100£ (in UK 5£)
- Provider: NetEnt
- Paylines: 26
Rise Of Olympus
Ascend to the top of Mount Olympus, the realm of the Greek gods, with Rise of Olympus Origins, a captivating 5x5 grid slot from Play’n GO
Rise Of Olympus Features:
- Wilds
- Free Spins
- Mystery Symbols
- Autoplay
- Expanding Wild
- Expanding Rows
- Volatility: High
- Theme: Modern
- Release Date: 2024-07-25
- RTP (Return to Players): %
- Min Bet: 0.1£
- Max Bet: 100£ (in UK 5£)
- Provider: Play'n GO
- Paylines: 1
Copy Cats
Are you just a copycat, or will you chase the big payout in this adorable cat-themed slot? With symbols of milk, toys, and playful charm, every spin could lead to big wins and hidden rewards.
Copy Cats Features:
- Free Spins
- Wilds
- Multipliers
- Scatter Symbols
- Autoplay
- Theme: Modern
- Volatility: Medium
- Release Date: 2017-03-01
- RTP (Return to Players): 96.72%
- Reels: 5
- Min Bet: 0.20£
- Max Bet: 100£ (in UK 5£)
- Provider: NetEnt
- Paylines: 25