Sign up now on b399, Bangladesh's most popular online gaming platform. Slots, Live Casino, Sports Betting — all in one place. Get an attractive welcome bonus on your first deposit.
The platform of choice for millions of Bangladeshi players — find out what makes b399 different
Register at b399 and get a 100% bonus on your first deposit. On top of that, daily, weekly, and special seasonal promotions keep rolling in to make your gaming experience even more rewarding.
A b399 account takes just 2 minutes to set up. Simply enter your mobile number, email, and password — no complicated steps involved. You can register from any device, mobile or desktop.
B399 upholds the highest security standards. Your personal data and funds are fully protected through SSL encryption, two-factor authentication, and a strict privacy policy.
Deposit and withdraw easily via bKash, Nagad, Rocket, or bank transfer. The minimum deposit is very low, so anyone can get started.
Once registered, you get access to 500+ games — including slots, Live Casino, roulette, blackjack, cricket betting, and much more. New games are added every week.
The b399 support team is available 24/7, ready to assist you in Bangla. From registration to withdrawal, get instant help via live chat whenever you need it.
Open a b399 account in just 4 easy steps and start playing right away
Visit b399.win or click on the registration page. Works on any device — mobile, tablet, or desktop.
Enter your name, mobile number, email address, and a strong password. Add a referral code if you have one.
Verify your account using the OTP code sent to your mobile. This keeps your account secure.
Make your first deposit and claim your welcome bonus. That's when the real fun begins — slots, casino, and betting, all unlocked.
B399 has become a well-known name in Bangladesh's online gaming scene. Thousands of people open new accounts on b399 every day — because the registration process is as simple as the benefits are rewarding. If you haven't signed up yet, read this page and discover how easy and worthwhile it is to join the platform.
You must be at least 18 years old to register at b399. This isn't just a rule — it's part of our responsible gaming policy. Make sure to provide accurate information when signing up, as identity verification is required at the time of withdrawal. Providing false details may result in account termination.
To register, you'll need: an active mobile number (linked to bKash/Nagad), a valid email address, and a strong password. Use a mix of letters, numbers, and special characters in your password to keep your account secure.
The welcome bonus is credited after your first deposit following registration. It goes directly to your balance and can be used on any game. To withdraw bonus funds, you'll need to meet the specified wagering requirements — visit the Terms & Conditions page for full details.
Tips: If you use a friend's referral code during registration, both you and your friend will receive an extra bonus.
After registration, b399 may verify your identity through a process known as KYC (Know Your Customer). This is typically completed by submitting a photo of your national ID or passport. Having KYC verified speeds up the withdrawal process and adds an extra layer of security to your account.
B399 is fully mobile-friendly. Whether you're on Android or iOS, just open b399.win in your smartphone browser and register in seconds. After signing up on mobile, enable push notifications to stay on top of new offers and bonuses as they drop.
Please note: b399 is a responsible gaming platform. Think of gaming as entertainment, not a source of income. Learn more at Responsible Gaming Page.
Once you register at b399, you get a full gaming account complete with a personal wallet, gaming history, bonus tracker, and loyalty points system. The more you play, the more points you earn — which can later be redeemed for cashback or free spins.
B399's loyalty program offers multiple tiers, from new member all the way up to VIP. Play regularly to climb the ranks faster and unlock greater rewards — from a dedicated personal account manager to exclusive cashback offers.
| Benefits | B399 | Others |
|---|---|---|
| Bangla Support | ✔ Available | ✘ Not Available |
| BKash Payment | ✔ Available | ✘ Not Available |
| Welcome Bonus | ✔ 100% | Limited |
| Fast Withdrawal | ✔ Available | Slow |
| Mobile Friendly | ✔ Available | Partial |
| Loyalty Program | ✔ Available | ✘ Not Available |
Answers to the most common questions from new members
Join millions of Bangladeshi players. Get a 100% bonus on your first deposit and enjoy access to 500+ games.