399b Online Casino — Enjoy the Best Betting Experience on Mobile, Anytime
Deposit as little as ৳300 with bKash or Nagad, get a 120% welcome bonus, and enjoy everything from cricket betting to live casino all in one place.
Our Game Categories Explained
399b offers a variety of game types — each category brings its own kind of fun for both new and experienced players.
Cricket Betting
From Bangladesh Tigers to IPL, BPL, and T20 World Cup — bet on every match across markets including runs, wickets, and match result. Find more details on the Cricket Betting page.
Live MarketsSlot Games
Hundreds of slot games from PG Soft, Pragmatic Play, and JILI run smoothly on mobile. Popular titles like Fortune Tiger, Gates of Olympus, and Money Coming are easy to find on the Slots page.
PopularLive Casino
Play live Baccarat, Roulette, and Blackjack with real dealers. Get the full casino experience in high-definition streaming from Evolution Gaming and Ezugi.
HD StreamingTeen Patti
The most popular card game in South Asia. JILI's Teen Patti Joker and Teen Patti 20-20 are easy to play on mobile. Simple rules, fast rounds.
Fast RoundsAndar Bahar
A traditional card game from the Indian subcontinent. Just one choice — Andar or Bahar — and that's where all the fun is. A live dealer version is also available.
TraditionalCrash Games
Aviator by Spribe is hugely popular in Bangladesh. The higher the multiplier climbs, the more the excitement builds — cash out at the right moment and you win.
High Volatility
Money Coming
JILI's Money Coming is a widely popular slot game that players in Bangladesh know well. Vibrant graphics and smooth gameplay set this game apart.
Treasures of Aztec
PG Soft's Treasures of Aztec takes you into the mysterious world of an ancient civilization. Special features and bonus rounds make it a top choice for slot fans.
The Strengths of the 399b Platform — Our Advantages
399b has built its place in Bangladesh's online betting world through speed, security, and trust.
Fast Withdrawals
Withdraw directly to bKash or Nagad in as little as 30 minutes to 3 hours — no long waits.
SSL Security
All your transactions and personal information are protected by SSL encryption. Play safely and with peace of mind.
Mobile Optimized
Stuck in Dhaka traffic or relaxing at home — play smoothly on any Android or iOS device.
24/7 Bengali Support
Day or night — our Bengali-speaking support team is always ready. Reach us via live chat or email.
Local Payments
bKash, Nagad, Rocket, Upay, and bank transfer — transact using the most familiar Bangladeshi payment methods.
Generous Bonuses
Get up to a 120% welcome bonus of ৳10,000 on your first deposit. Reach VIP status and earn weekly cashback too.
Wide Sports Coverage
Bet on cricket, football, kabaddi, and more. From BPL to the FIFA World Cup — all on one platform.
VIP Rewards
From Bronze to Platinum — climb four VIP tiers and enjoy benefits ranging from weekly cashback to exclusive perks.
Cricket Formats Explained
T20
20 overs per innings, with matches typically finishing in 3–4 hours. The most popular format for betting — markets include ball-by-ball, top run scorer, number of sixes, and more.
One Day International (ODI)
50 overs per innings, with a full match lasting around 8 hours. The innings break offers a chance to adjust strategy, making the betting markets more varied as well.
Test Cricket
Five-day matches with two innings each. Long-format betting markets include match draw, first-innings lead, and series result. Ideal for strategic bettors.
The Hundred
100 balls per innings — the shortest and fastest format. This new tournament from England is gaining popularity quickly among younger fans.
Major Leagues
Ready to Win Big?
Get up to a 120% bonus of ৳10,000 on your first deposit. Start with just ৳300 and begin your journey at 399b.
Login NowFor users aged 21 and above only. Play responsibly.
Live Casino Tables
Get the full casino experience from home with real dealers. The highest-quality tables from Evolution Gaming and Ezugi are available at 399b.
Live Baccarat
Player, Banker, or Tie — full excitement in three simple bets. The most popular live table game in Asia. Multiple tables and bet limits available.
Most PopularLive Roulette
Both European and American Roulette are available. Bet on numbers, colours, or columns. Suitable for everyone from beginners to experienced players.
Multi-VersionLive Blackjack
The strategic game of reaching 21. Make the right decisions against the dealer. One of the top choices for card game fans.
Game of StrategyLive Andar Bahar
The live version of the traditional Indian card game. Play with a real dealer and enjoy the thrill of winning.
Local FavouriteGame Show Wheel
Game show wheels like Crazy Time and Dream Catcher — the excitement of a TV game show, live streamed directly to you.
ExclusiveLive Teen Patti
The familiar South Asian card game now with a live dealer. A fresh dimension on a game you already know, to enjoy with friends.
New DimensionBeginner's Guide to Starting at 399b
Start your betting journey in just four simple steps — the entire process can be completed on mobile.
Create an Account
Go to 399b and register from the login page. Open an account in a few minutes using your mobile number and basic details. Only users aged 21 and above may register.
Log In
Log in with your registered details from the 399b Login page. Secure encryption is used at every login.
Make a Deposit
Deposit a minimum of ৳300 using bKash, Nagad, Rocket, or Upay. A welcome bonus of up to 120%, worth up to ৳10,000, is added automatically on your first deposit.
Place Your First Bet
Cricket, slots, or live casino — pick the game you want. Place a bet easily from your account balance and enjoy the excitement of winning.
Football Betting — The World's Top Leagues
Football fans in Bangladesh closely follow the Premier League, La Liga, Champions League, and FIFA World Cup qualifiers. 399b offers betting on matches across all these leagues.
| Market | Description |
|---|---|
| 1X2 | Home win, draw, or away win — the simplest betting market. |
| Double Chance | Cover two outcomes in one bet — reduces risk. |
| Over/Under Goals | Whether more or fewer goals will be scored than a set number. |
| Both Teams to Score | Whether both teams will score at least one goal. |
| Asian Handicap | Creates a level playing field by giving the weaker team a virtual advantage. |
Special note: Many big Premier League and Champions League matches kick off after midnight Bangladesh time (BST). Place your bets on late-night matches without any hassle on the 399b mobile platform.
A Guide to Understanding RTP & House Edge
RTP (Return to Player) is the theoretical percentage of total wagers that a game returns to players over the long run. For example, a 96% RTP means that on average ৳96 is returned for every ৳100 wagered — although this is a long-term average, results can vary from session to session.
House edge is the flip side of RTP — the casino's average advantage. A 96% RTP means a 4% house edge. Typical RTP ranges across different game types:
- Slot Games: Usually between 92–98% — higher volatility means a greater chance of bigger wins.
- Blackjack: With the right strategy, RTP of close to 99% is possible — skill matters.
- Roulette: Around 94–97% in the European version — the house edge is higher in the American version.
- Baccarat: Relatively low house edge, especially on the Banker bet.
Being aware of RTP before you start playing helps you make more responsible, informed decisions. A high RTP does not guarantee a win every time — it is a long-term statistical figure.
Refer a Friend, Get Rewarded Together
Bring your friend to 399b — you both get rewarded.
Share Your Referral Link
Copy your referral link from your account and share it with friends — via WhatsApp, Messenger, or directly.
Friend Signs Up and Deposits
The referral is counted as successful once your friend registers through your link and makes their first deposit.
Both of You Get Rewarded
Once the referral is successful, both you and your friend will receive rewards. Log in to find out the full reward details.
Fair Use Terms and Conditions
- Referring yourself is strictly prohibited.
- Each person may only have one account.
- The referred friend must successfully complete their first deposit.
- Multiple accounts from the same IP address or device are not accepted.
Log in to 399b to access all referral program benefits and to get your referral link.
Log In to Start ReferringBeware of Fake Sites and Scams
- Verify the correct domain: The only official 399b address is 399b.lat. Look for the green padlock and HTTPS in the URL bar.
- Never share your OTP or PIN: Our support team will never ask for your bKash, Nagad, or Rocket PIN — any such request is a sign of a scammer.
- We never ask for your password: Official support will never ask for your account password.
- Beware of Telegram / Facebook "agents": 399b does not operate through any unofficial agents — handle everything directly on the site.
- If you are scammed: Immediately change your account password and contact us at [email protected].
Customer Support Channels
We are here for you whenever you need help. Support is available 24/7 in both Bengali and English.
Live Chat
Use live chat for the fastest support. Once you log in and open the chat window, a Bengali-speaking support agent will respond right away.
Best for: Quick questions, withdrawal status, technical issues.
Email Support
Contact us by email for complex issues, account verification, or document submission. Sending a detailed explanation along with screenshots will help us resolve your issue faster.
Best for: KYC documents, account issues, detailed complaints.
About the Support Team
Our support team works 24 hours a day, 7 days a week on Bangladesh Standard Time (BST, UTC+6). Getting support in Bengali reduces the chance of misunderstandings and means issues get resolved faster.
Frequently Asked Questions
Simple answers to the most common questions about 399b.
Secure Payments & Fast Withdrawals
399b supports the most widely used mobile banking methods in Bangladesh. Deposit instantly and withdraw your winnings quickly via bKash, Nagad, Rocket, and Upay.
- bKash & Nagad: The most popular methods — instant deposits, fast withdrawals.
- Rocket & Upay: Alternative mobile payment options — the same simple process.
- Bank Transfer: Major banks including Dutch-Bangla, Brac, and Islami Bank.
- Minimum deposit ৳300 — minimum withdrawal ৳500.
- Withdrawal time: Usually within 30 minutes to 3 hours.
