Opening an account at 3999b is completely free and surprisingly simple. Just enter your mobile number and a password — and you're ready to play within minutes. A 150% bonus is waiting on your first deposit.
Opening an account on 3999b takes just 4 simple steps, and you can do it from any device — mobile or computer.
Enter your name, mobile number, and a strong password. Email is optional but useful for account recovery.
After registration, a 6-digit OTP will be sent to your mobile number. Enter it to complete your mobile verification.
Make a minimum deposit of ৳100 via bKash, Nagad, or Rocket. Your 150% bonus will be credited automatically as soon as the deposit goes through.
Once your balance is topped up, head straight to Sports Betting, Live Casino, lottery, or jackpot — whichever you prefer.
Filling in the form and verifying your OTP takes 2–3 minutes at most — less time than a phone call.
Only your name and mobile number are required. KYC can be completed later — just make sure it's done before you withdraw.
Special benefits for new members — at a glance
A 150% bonus of up to ৳15,000 is added automatically on your first deposit. It's a one-time offer, so make the most of it.
BKash, Nagad, Rocket, and bank transfer — all the payment methods you know are supported. You can get started with as little as ৳100.
From cricket betting to Live Casino, slots to lottery — you get access to every section the moment you register.
256-bit SSL encryption and two-factor verification — your account and funds are fully protected.
Every bet earns you points that can be converted into bonuses or free spins. Play regularly and you could even unlock VIP status.
From registration to withdrawals — get help in Bangla on any topic, anytime. Reach us via live chat, email, or phone.
Bonuses available in your first week
Applied automatically on your first deposit — deposit ৳100 and get ৳250.
Refer a friend — once they make their first deposit, you earn ৳500.
10% cashback on net daily losses during your first week after registration.
You'll receive 20 free spins on selected slots games after registration.
When signing up on an online betting or gaming platform, most people have one question on their mind — is it safe? Could sharing my details cause problems? At 3999b, the registration process is as secure as it is straightforward. You start with just your name and mobile number — no bank details or national ID are required at the time of registration.
Thousands of new members join 3999b every day — and it's easy to see why. The platform supports local Bangladeshi payment methods, runs fully in Bangla, and lets you bet on the sports you love, especially cricket. From Dhaka to Chittagong, Rajshahi to Sylhet, people across Bangladesh are choosing 3999b.
Choosing a strong password at registration is important. Use a mix of uppercase and lowercase letters, numbers, and special characters — at least 8 characters long. Never use your date of birth or mobile number as a password. 3999b's registration page includes a password strength meter — green means you're good to go.
One important thing to know about registering at 3999b: each person may only open one account. Attempting to create multiple accounts using the same mobile number, email address, or device may result in all accounts being suspended. If your account was previously closed for any reason and you'd like to reopen it, contact support directly.
Referral codes are another common question. If you've received a referral code from someone you know who's already a 3999b member, enter it during registration — both you and the person who referred you will receive a bonus. No referral code? No problem — you'll still receive the welcome bonus without one.
Many players use 3999b on mobile. You can register directly from your mobile browser — no separate app download needed. The site is built with a mobile-friendly design, so it works comfortably on smaller screens. For security, it's best to register using mobile data rather than public Wi-Fi.
Your first priority after registering should be heading to the payment page and choosing a deposit method. The sooner you make your first deposit, the sooner you'll receive your welcome bonus and can start playing. Keep in mind the welcome bonus is available on your first deposit only — you won't get another chance.
To open an account at 3999b, you must meet the following eligibility criteria.
What to do first after creating your account.
Add your date of birth and address now — you'll need them for KYC later, and it keeps withdrawals moving fast.
Add a bKash or Nagad number registered in your own name — it speeds up withdrawals later.
Enabling 2FA from Security Settings gives your account a significant extra layer of protection.
For responsible gaming, it's a good habit to set a daily deposit limit right from the start.
Tips: Making your first deposit within 7 days of registering gives you the best chance of qualifying for special new member offers. Rewards View the current offers on the page.
Frequently Asked Questions
Register for free and get started within 2 minutes. A 150% bonus is waiting on your first deposit — this offer comes once.