New or returning — C 666 has promotions for everyone. Welcome bonuses, weekly cashback, free bets, reload offers, and seasonal deals, all in one place. Deposit with bKash or Nagad and your bonus is credited instantly.
Open a new account at C 666 and make your first deposit – get a bonus equal to your deposit amount, up to ৳10,000. Minimum deposit of just ৳500 to get started. No complicated terms – withdraw your bonus with just a 5x rollover.
New
30 Days Left
Make your first deposit at C 666 and receive a matching bonus. Use it across Sports or Casino — your choice.
🔥 Hot
7 Days Left
Place a ৳1,000+ bet on any international cricket match and get a ৳500 free bet the following week. Double the reward for Bangladesh matches.
Weekly
3 Days Left
Bet ৳5,000+ in a week and get 10% cashback on your net losses, up to ৳3,000. Credited automatically every Monday.
New
14 Days Left
Reload daily in the C 666 Casino section and get a 50% bonus, up to ৳5,000. Valid for Live Casino, slots, and table games.
🎟️ Lottery
21 Days Left
Every registered C 666 member receives one free lottery ticket per day, credited automatically upon logging in.
👑 VIP
Year-Round
Earn points on every bet and redeem them for bonus cash. Four tiers — Silver, Gold, Platinum, and Diamond — each with its own exclusive perks.
Refer a Friend
Ongoing
Refer a friend or acquaintance to C 666. Once they make their first deposit, you'll receive a ৳300 bonus — with no cap. The more you refer, the more you earn.
🎂 Special
On Your Birthday
C 666 remembers your birthday. Add your date of birth to your profile and receive a ৳1,000 bonus automatically on your birthday — no deposit required.
⚡ Parlay
Ongoing
Parlay 3 or more matches and earn an extra 10% bonus on your winnings. Goes up to 20% for 5+ matches and 30% for 7+ matches.
Claim your bonus in just four simple steps
Register for free on C 666 with your mobile number. It only takes 2 minutes.
Deposit a minimum of ৳500 via bKash, Nagad, or Rocket.
Browse the promotions page, choose your preferred offer, and click the "Claim" button.
The bonus will be credited to your account automatically. Complete the rollover requirement to make a withdrawal.
Multiple promotions cannot be used at the same time. Each offer has its own terms and conditions. For full details, Terms & Conditions read here.
"I was genuinely surprised by C 666's welcome bonus. My ৳500 became ৳1,000 instantly. I got off to a great start with my betting. Other sites I'd used before were never this straightforward."
"The weekly cashback is my favorite. On a tough week, getting that cashback back really lifts my mood. C 666's offer is genuinely practical."
"Referred a friend and got ৳300 the very next day. I've now brought in five friends. C 666's referral program actually pays out — no hassle at all."
Promotions are nothing new in online betting, but C 666 takes a different approach. Most platforms lure players with big numbers, only to bury the real conditions in fine print that leaves everyday members struggling to actually claim their bonuses. C 666 doesn't play that game. Every promotion here is straightforward, transparent, and designed with the real experience of Bangladesh members in mind.
Take the welcome bonus, for example. Deposit as little as ৳500 and get a 100% match bonus. The rollover is just 5x — well below the industry average. That means a ৳500 deposit gives you ৳1,000 to play with, and once you've placed a total of ৳5,000 in bets, the bonus becomes withdrawable. It's a realistic target to hit.
C 666's weekly cashback program is built for regular bettors. Bet ৳5,000 or more in a week and get back 10% of your net losses – up to ৳3,000 – with no rollover requirement. That means you can withdraw it straight away. No other platform in Bangladesh makes this benefit this easy to access.
Every Monday morning, cashback is calculated and credited to your account automatically. No application needed, no code required. That's the beauty of C 666's simplicity.
In Bangladesh, cricket is more than a sport – it's a passion. And C 666 respects that. Special promotions run throughout cricket season, including free bets, accumulator bonuses, and cricket special lotteries. Betting on Bangladesh matches comes with extra perks – C 666's way of showing appreciation for local fans.
C 666's referral program has become hugely popular in Bangladesh – and for good reason. Payments are fast, terms are simple, and there's no cap. Refer a friend who registers and makes their first deposit, and you earn ৳300. Bring in ten friends and that's ৳3,000. It's a genuine extra income stream that many members are already putting to good use.
Regular play moves you up the ranks in C 666's VIP program. From Silver to Diamond, each tier unlocks new perks. Diamond members get a dedicated account manager, elevated withdrawal limits, and exclusive event access. It's not just about bonuses — it's a complete VIP experience.
To wrap up – C 666's promotions aren't just a strategy to attract new members. They're a genuine effort to keep existing members valued. Regular players know that the bonuses here offer real worth.
C 666 believes in responsible gaming. All promotions are available to members aged 18 and above only. If you have a problem, Responsible Gaming View Page.