Onyx Slots Review

Last updated: June 14, 2025

Onyx Slots is an Aussie online casino that lets players wager on Slots, Live Casino, Slingo and Roulette.

It features well-known software providers, such as Netent, Play'n GO, Pragmatic Play, Microgaming, Red tiger, Irondog and Foxium, which are among the most popular providers listed at new casino sites in Australia.

Bonuses and Promotions

Onyx Slots rewards new players with a casino bonus where players will need to create a new account, or for current player to claim on selected days.

Current promotion running at this casino for June 2025 includes:

Onyx Slots

Bonus: AU Players Not Accepted

Promotions: no wager bonus

Free Spins: 50 Bonus Spins

Games Applicable: Big Bass Bonanza

Wager Requirement: None

: 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 | Gambling Help Online®.

No Wagering Bonus

The casino offers a no-wagering bonus, providing free spins with no wagering requirements for new players 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.

The no wagering slot selected by the casino is Big Bass Bonanza .

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.

Below are the slot games currently featured as of June 14, 2025 at this casino:

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
• Provider: NetEnt
• Paylines: 10

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:

Features

• Wilds
• Multipliers
• Instant Wins
• Free Spins
• Expanding Wild
• Mystery Symbols
• Scatter Symbols

Type

• Volatility: High
• Theme: Modern

Stats

• Release Date: 2024-08-01
• RTP (Return to Players): 96.2%
• Reels: 6
• Min Bet: 0.1
• Max Bet: 50
• Provider: Play'n GO
• Paylines: 30

Phantom of The Opera Slot

Take a seat and enjoy the classic opera theme of The Phantom in this thrilling online slot, featuring extra spins and a chance to land big wins.

Phantom of The Opera Slot Features:

Features

• Free Spins
• Expanding Wild
• Expanding Symbols
• Wilds
• Multipliers
• Scatter Symbols
• Autoplay

Type

• Theme: Modern
• Volatility: Medium

Stats

• Release Date: 2016-03-10
• RTP (Return to Players): 96.30%
• Reels: 5
• Min Bet: 0.30
• Max Bet: 30
• Provider: Microgaming
• Paylines: 243

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

Pros

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

Mobile

Onyx Slots hosts a fully mobile-optimized platform that allows players to find their favorite games instantly without needing to download any apps. It supports all mobile devices, streaming games in full HD over a secure HTTPS connection.

Is it Legit?

Onyx Slots features well-known software providers with a strong reputation for delivering secure and legitimate online gambling experiences. These providers are RTP-verified by a third party and support responsible gambling.

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.

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.