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666 Casino Welcome Bonus UK 2025
What You Get
666 Casino welcome bonus offers new UK players a devilishly tempting two-part offer. On your first deposit, you’ll receive a 100% match bonus up to £66 – so a £66 deposit gives you £132 to play with right away.
On your second deposit, you’ll unlock 66 Extra Spins for the popular slot game Big Bass Bonanza when you deposit at least £20. These spins come with a 24-hour expiry period once credited, so make sure to use them quickly.
What You Need to Do
To claim the welcome offer, register a new account at 666 Casino (UKGC Licence No. 39483) and opt into the bonus during sign-up. Then, make a minimum deposit of £20 to activate the 100% match bonus on your first deposit (up to £66). The bonus funds will be automatically credited once your deposit is confirmed.
When you make your second deposit of £20 or more, you’ll receive 66 Extra Spins on Big Bass Bonanza. These can be claimed from your Available Bonus section once you’re notified that they’re live.
666 Casino Welcome Bonus – Important Details
- Offer is valid for new players only and applies to the first two deposits.
- Minimum deposit to qualify: £20.
- Maximum first deposit bonus: £66.
- 66 Extra Spins are awarded after a second deposit of £20 or more.
- Bonus funds must be wagered 35x before withdrawal.
- Free Spins are valid for 24 hours once credited.
- One bonus per household, IP address, device, or payment method.
- Marketing communications must be enabled to receive updates and promotional offers.
- This welcome offer cannot be combined with other bonuses.
- Bonus funds and spins are credited automatically upon qualifying deposit(s).
666 Casino Welcome Bonus Summary
The 666 Casino UK Welcome Offer is a two-stage promotion that gives new players a great start. With a 100% deposit match up to £66 on your first deposit and 66 Extra Spins on your second, it’s a fun and rewarding way to explore the site. With a reasonable 35x wagering requirement and automatic bonus crediting, it’s simple to activate and enjoy – just make sure to use your Free Spins within 24 hours.
