666 Casino Bonuses & Codes 2025
Discover the latest 666 Casino casino bonuses in 2025. See how fair their terms are, how they compare to 129 UK offers, and what they mean for your chance to win real money.
100% up to £66 on first deposit & 66 free spins on second deposit
35x
FS Wagering
-
35x
B Wagering -
£100 Win Cap -
£20 Min Deposit
18+. New players only. Min deposit £20. Max bonus 100% up to £66 on 1st deposit. 66 spins on Big Bass Bonanza on 2nd deposit. 35x wagering applies, within 21 days. Spins expire after 24 hours. Full T&Cs Apply
For more information about games, features, payment options and more, read our 666 Casino review.
666 Casino Welcome Bonus
100% up to £66 on first deposit & 66 free spins on second deposit
666 Casino welcomes new customers with a two-part bonus package. Your first deposit of £20 or more receives a 100% match bonus up to £66, doubling your funds. A second deposit of £20 or more adds 66 free spins on 'Big Bass Bonanza'. Both bonuses have a 35x wagering requirement and must be used within 21 days, providing extended playtime and potential for real money winnings.
Ranked #105 out of 129 Bonuses
Free Spins:
66 FS
Match Bonus:
100% / £66
Free Spins Wagering:
35x
Bonus Wagering:
35x
Max win:
£100
Min Deposit:
£20 Min Deposit
Bonus Game RTP:
96.71%
Play Here
18+. New players only. Min deposit £20. Max bonus 100% up to £66 on 1st deposit. 66 spins on Big Bass Bonanza on 2nd deposit. 35x wagering applies, within 21 days. Spins expire after 24 hours. Full T&Cs Apply
- Wagering:2/5
- Bonus Size:3/5
- Max Win:1/5
- Bonus Cost:3/5
- Game RTP:4/5
35x Wagering Requirement
2/5
This bonus includes a 35x wagering requirement on the combined bonus and deposit amounts. You’ll need to wager this total 35 times before you can withdraw any winnings, which can reduce the bonus’s cash-out value and make it more challenging to turn bonus funds into real money compared to no wagering offers.
Explore our No Wagering Casino Bonuses for bonuses that let you withdraw your winnings without wagering.
Good Bonus Amount: 100 Match Deposit and 66 Free Spins
3/5
This bonus provides a 100% match up to £66 on your first deposit and 66 free spins on ‘Big Bass Bonanza’ with your second deposit. This combination of bonus funds and spins enhances your initial deposits, giving you additional playtime and increasing your winning potential.
£100 Max Win Cap on Free Spins
1/5
The 100% match bonus has no win cap, allowing you to withdraw all winnings once the wagering requirements are met. However, winnings from the 66 free spins on ‘Big Bass Bonanza’ are capped at £100, meaning any amount over £100 will not be credited to your account.
Reasonable Bonus Cost: £20 to Claim
3/5
The bonus requires a minimum deposit of £20 to claim both the 100% match bonus and the 66 free spins. This cost is competitive within the market, making the bonus accessible to a wide range of players.
Explore our £1 deposit casino bonuses for offers requiring less money to claim.
An Average RTP Percentage: 96.71%
4/5
‘Big Bass Bonanza’ offers an RTP of 96.71%, slightly above the industry standard of 96%. This higher RTP gives a marginally better chance of returns when using your free spins on this game, adding value to the bonus offer.
The 666 Casino bonus gives new players a solid start with a 100% match bonus up to £66 and 66 free spins on the popular ‘Big Bass Bonanza’ slot. This welcome offer can add real value to your gameplay, though it’s worth noting the 35x wagering requirement and a £100 cap on free spin winnings. While the bonus itself is competitive, it’s best to keep these conditions in mind as they may affect your withdrawal potential.
How to Claim Your 100% up to £66 on first deposit & 66 free spins on second deposit Bonus at 666 Casino
To claim your 66 free spins at 666 Casino, follow these steps:
- Register for a new account at 666 Casino.
- Make your first deposit of £20 or more to receive the 100% match bonus.
- Make a second deposit of £20 or more to qualify for the 66 free spins on “Big Bass Bonanza”.
- Your 66 free spins will be credited instantly after the second deposit is processed.
How to Withdraw Real Money From this Bonus
To withdraw your bonus winnings from 666 Casino, follow these steps:
- Meet the wagering requirements: Ensure you have wagered 35 times the sum of your bonus and deposit within 21 days.
- Choose a withdrawal method: Select from options such as Visa, MasterCard, PayPal, NETELLER, Skrill, ecoPayz, Trustly, MuchBetter, or Bank Transfer.
- Submit a withdrawal request: Navigate to the withdrawal section of your account and enter the amount you wish to withdraw.
- Await processing:
- Debit cards: 3-5 working days
- E-wallets (Skrill, Neteller, MuchBetter, ecoPayz): 0-2 days
- PayPal and Trustly: 0-4 days
- AstroPay: 3 days
- Verify your account: Complete any necessary KYC verification by providing a valid ID and proof of address.
Top Bonuses From Alternative Casinos
Looking for more options? Below are 10 of our highest-rated casino bonuses from licensed casinos in the UK.
200 Free Spins on 'Age of The Gods: God of Storm 2'
0x
FS Wagering
-
No Win Cap -
£10 Min Deposit
New customers only. Opt In required. £/€10 min stake on Casino slots within 30 days of registration. Max bonus 200 Free Spins on selected games credited within 48 hours. Free Spins expire after 7 days. iOS app restrictions may apply. Email/SMS validation may apply. Not available in NI. T&Cs Apply.
Up to 200 Free Spins on selected games
0x
FS Wagering
-
No Win Cap -
£10 Min Deposit
This offer is available to new and fully verified customers only. Eligible customers must have a minimum of £10 in lifetime deposits. T&Cs apply.
100 Free Spins & 100 Bingo Tickets
0x
FS Wagering
-
No Win Cap -
£10 Min Deposit
18+. New customers only. Min Deposit £10. Spend £10 on Slots to get 100 Free Spins (£0.10 each, valid for 7 days, valid on selected games). Spend £10 on Bingo to get 100 Bingo Tickets (£0.01 - £0.05, valid for 7 days). Player restrictions and T&Cs apply.
50 Free Spins on selected slot games
0x
FS Wagering
-
No Win Cap -
£10 Min Deposit
18+. UK & ROI only. New customers only. Deposit & spend £10, to get 50 Free Spins on selected slot games (Value £0.10 each). Use within 7 days. Restrictions and T&Cs apply.
80 Free Spins on Big Bass Bonanza
0x
FS Wagering
-
No Win Cap -
£10 Min Deposit
First deposit only. This offer is only available for first time depositors. Min deposit is £10. 80 Free Spins on Big Bass Bonanza. Spin Value: £0.10. This offer cannot be used in conjunction with any other offer. This offer is only available for specific players that have been selected by PlayOJO. If you have arrived on this page not via the designated offer via PlayOJO you will not be eligible for the offer. OJO’s Rewards and Game Play policy applies. Read more.
20 Free Spins on Zeus vs Hades Gods of War for each of your first 5 deposits of £10 or more
0x
FS Wagering
-
£100 Win Cap -
£10 Min Deposit
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
50 free spins on 'Big Bass Splash'
0x
FS Wagering
-
No Win Cap -
£10 Min Deposit
New cust only. Opt in & deposit £10+ in 7 days & wager 1x in 7 days on any eligible casino game (excluding live casino and table g
50 Free Spins on Bigger Bass Bonanza
0x
FS Wagering
-
£100 Win Cap -
£15 Min Deposit
This one-time offer is only available here for new UK customers of Jackpot.com. To participate a minimum £15 bet is required. Any terms not specified in these Special Promotional Terms, the Promotional Terms shall apply and will be subject to Jackpot.com Terms and conditions
30 Free Spins on 'Rainbow Riches'
0x
FS Wagering
-
No Win Cap -
£10 Min Deposit
First deposit only. Min deposit & spend £10. Max 30 spins on Rainbow Riches at 20p per spin. Spins credited upon spend of £10. 18+ Full T&Cs apply.
20 Bonus Spins on Big Bass Splash
0x
FS Wagering
-
£250 Win Cap -
£10 Min Deposit
18+. Only available to new players. Minimum £10 first deposit required. 20 Bonus Spins on Big Bass Splash. No Wagering Requirements. Winnings credited directly to cash balance. Neteller and Skrill deposits excluded. Expiry: bonus spins expire 2 days after deposit. Further terms apply:
