From welcome bonuses and daily cashback to referral rewards and seasonal offers — c3666 gives you more with every game you play.
Exclusively crafted for all c3666 members
New to c3666? Your first deposit earns a 200% bonus — deposit BDT 1,000 and you'll start playing with BDT 3,000.
The rewards don't stop after your first deposit. Make your second deposit and earn a further 150% bonus. c3666 wants you to benefit from every recharge.
Don't let a bad day get you down. c3666 returns 10% of your daily losses as cashback every night at midnight.
Invite your friends to join c3666. Once a friend registers and makes their first deposit, you earn a BDT 500 bonus. More friends means more rewards.
Get a 50% reload bonus on any one deposit between Monday and Sunday. Keep playing regularly and enjoy extra rewards every week.
During major cricket and football tournaments, c3666 hosts exclusive competitions. Top players win exciting cash prizes.
Built with Bangladesh in mind
The online gaming platform market has plenty of options. But c3666promotions are built with Bangladeshi players in mind. There's no confusing fine print to wade through — all terms are stated clearly and simply.
On many platforms, claiming a bonus is easy — but using it is another story. Wagering requirements are so high that you rarely see any real benefit. c3666bonus terms are fair and achievable for the average player.
Additionally c3666 regularly runs seasonal offers. Special bonuses are available during Eid, Puja, and the World Cup — festival-focused promotions that resonate with Bangladeshi culture.
All bonus terms are clearly written out in plain English.
Automatically credited to your account once you qualify.
Special perks during Eid, Puja & the World Cup.
Support for any bonus-related queries.
Get your bonus in 5 easy steps
Open a free account at c3666. Registration takes just 2 minutes with your mobile number or email. New members are immediately eligible for the welcome bonus.
After logging in, go to the Promotions section. All active offers are listed there. Simply pick the one that suits you.
Click on the bonus you want and press the Activate button. Some offers are activated automatically, while others need to be claimed manually.
Deposit via Mobile Banking, Nagad, or Rocket. A minimum deposit amount applies depending on the offer. Your deposit is credited to your account instantly.
Once your deposit is confirmed, the bonus is added automatically. After meeting the requirements, you can withdraw from your bonus balance. Enjoy the best of c3666.
Always read the wagering requirements (rollover conditions) carefully before claiming any bonus. c3666 typically applies a 10x–20x rollover, which is lower than most other sites in the market.
Multiple bonuses cannot be used simultaneously. Each bonus has its own validity period and terms. Visit the Terms & Conditions page for full details.
Extra rewards during festivals and major tournaments
Festival season in Bangladesh is always a time of joy. And c3666 wants to make the celebrations even more exciting. That's why special bonus offers are available during Eid ul-Fitr, Eid ul-Adha, and Puja — with higher bonus rates than usual.
During cricket season c3666tournament promotions are hugely popular. During IPL and BPL seasons, the top bettor of the day gets rewarded. These sports-based promotions are a big hit with cricket fans across Bangladesh.
VIP members also enjoy exclusive promotion benefits. The higher your VIP tier, the bigger your bonuses. On special occasions, VIP members receive dedicated offers that aren't available to regular members.
When a new game launches c3666 It gives you free spins or credits for that game, letting you try out new titles without risking your own money. This is especially appealing to new members, as you can explore plenty of games right from the start — completely free.
A quick overview of all offers at a glance
Everything You Need to Know About Bonuses & Offers
Thousands of Bangladeshi players are already enjoying c3666's promotions. Join them today and claim a 200% bonus on your very first deposit.