4b99 Online Casino — Bangladesh's top gaming destination with 24-hour support in Bangla
Deposit easily via bKash, Nagad, Rocket, and Upay, and enjoy everything from cricket betting to live casino — all on a safe and reliable platform.
Get started with a Welcome Bonus
On your first deposit at 4b99, you get a 200% bonus up to ৳5,000. Deposit just ৳500 and start playing with triple your balance right away.
The bonus wagering requirement is just 25x — one of the most competitive conditions among online casino bonuses in Bangladesh. Withdraw directly without cancelling the bonus.
- 200% bonus on first deposit
- Maximum bonus amount ৳5,000
- Wagering requirement 25x
- Minimum deposit ৳500
For ages 21 and above only
Why Choose 4b99?
Fast Withdrawals
Withdrawals are completed in as little as 15 minutes to 2 hours. Instant payments to bKash and Nagad.
Fast PaymentsSecure and Encrypted
Your account and transactions are fully protected with SSL encryption and advanced security technology.
SSL Protection24/7 Bangla Support
Get help in Bangla via live chat any time of day or night. Our team is always ready.
Round-the-Clock ServiceLocal Payments
bKash, Nagad, Rocket, and Upay — all popular mobile wallets in Bangladesh are supported.
Easy TransactionsVIP Rewards
Enjoy weekly cashback across 5 VIP levels from Bronze to Diamond.
VIP ClubHuge Game Collection
A vast collection of hundreds of games including slots, live casino, table games, and fishing games.
All Types of GamesCricket and Sports Betting
Bet on all major cricket tournaments including BPL, IPL, and T20 World Cup at the best odds.
Live BettingRegular Promo Offers
Get special bonuses and free spin offers on occasions like Pohela Boishakh, Eid, and more.
Special OffersExplore Game Categories
From slots to live dealer, cricket betting to poker — all types of games on one platform.
Cricket Formats and Betting Markets
4b99 brings a special experience for cricket fans in Bangladesh. To bet across different formats of cricket, it helps to understand what makes each format unique.
T20
20 overs per side. Matches typically finish in 3 to 4 hours. The widest range of betting markets — match winner, top scorer, number of wickets.
One-Day (ODI)
50-over matches. More markets across a full day's play — innings runs, partnership betting.
Test Cricket
5-day matches. Session-by-session betting, man of the match, and draw/win markets.
The Hundred
100-ball format. Exciting live betting opportunities in a fast-paced game.
Top Game Providers
Games from the world's leading software providers are available on 4b99. Each provider brings its own strengths.
A world-leading provider of slots and live casino games. Known for high-quality graphics and games with exciting bonus features.
Specialists in Asia-focused mobile slot games. Uses unique Asian themes and Megaways-style mechanics.
Hugely popular in the Philippines and Asia-Pacific markets. Specialists in fishing games, slots, and bingo.
The leader in the live casino industry. Offers the chance to play live blackjack, roulette, and baccarat with real dealers.
The pioneer of the crash game category. Their Aviator game is very popular in Bangladesh and gives players the chance to win big with simple mechanics.
One of the founders of the online gaming industry. Holds a record of excellence in classic slots, progressive jackpots, and poker games.
What is RTP and House Edge and Why It Matters
RTP, or Return to Player, is the percentage of total wagers that players get back over the long term in a game. For example, if a slot has an RTP of 96%, on average ৳96 comes back for every ৳100 wagered — though this is a theoretical average and can vary from session to session.
The typical RTP range varies across different game types. Slot games generally show an RTP of 92–98%. In blackjack, with the right strategy, it is possible to get close to 99% RTP. In roulette (European), the RTP usually falls between 94–97%.
House edge is the flip side of RTP — what the casino keeps on average from each wager. If the RTP is 96%, the house edge is 4%. This does not mean you will necessarily lose — winning big in a short session is entirely possible.
Understanding RTP before playing any game is the mark of a responsible player. A lower RTP means a higher house edge — so make informed decisions and play for entertainment, not out of dependency.
Bankroll Management Guide
The foundation of responsible gaming is budget control. Follow the rules below.
Set a Gaming Budget
Only spend money on gaming that, if lost, will not affect your daily life. Never bring rent, food, or other essential expenses into your gaming budget.
Divide Into Sessions
Break your monthly budget into smaller sessions. Decide in advance not to spend more than a set amount in each session.
The 1–5% Per Bet Rule
Never place more than 1 to 5% of your total session balance on a single bet. This rule gives you the chance to play for longer.
Stop When You Win
Set a specific winning target. Once you reach that target, stop playing — it is wise not to give back the profit.
Stick to a Loss Limit
If you lose a set amount in a session, you must stop. Increasing your bets to quickly recover lost money is a dangerous trap.
Track Your History
Note your wins and losses from each session. This will help you understand patterns and make more informed decisions.
Payment Methods and Processing Times
All transactions on 4b99 are protected with SSL encryption. See all payment options in the table below.
| Payment Method | Minimum Deposit | Minimum Withdrawal | Deposit Time | Withdrawal Time | Fee |
|---|---|---|---|---|---|
| bKash | ৳500 | ৳800 | Instant | 15 minutes – 2 hours | Free |
| Nagad | ৳500 | ৳800 | Instant | 15 minutes – 2 hours | Free |
| Rocket | ৳500 | ৳800 | Instant | 15 minutes – 2 hours | Free |
| Upay | ৳500 | ৳800 | Instant | 15 minutes – 2 hours | Free |
| Dutch-Bangla Bank | ৳500 | ৳800 | 1–24 hours | 1–24 hours | As per bank policy |
| City Bank | ৳500 | ৳800 | 1–24 hours | 1–24 hours | As per bank policy |
| BRAC Bank | ৳500 | ৳800 | 1–24 hours | 1–24 hours | As per bank policy |
How to Get Started — 4 Easy Steps
Create an account
Go to the 4b99 Login page and create a new account with your mobile number and password. The process takes just a few minutes.
Log In
Log in securely using your registered mobile number and password. Two-step verification keeps your account even more secure.
Make a Deposit
Deposit from just ৳500 using bKash, Nagad, Rocket, or Upay. The welcome bonus will be added automatically.
Place Your First Bet or Start Playing
Bet on your favourite cricket matches or start playing slots and live casino games. 24/7 live chat support is always here for any issue.
Account Verification Process
KYC (Know Your Customer) is the process of confirming a user's identity. It keeps your account secure and helps prevent fraud.
Why is KYC Required?
Verification is mandatory to ensure a safe and fair environment and to prevent money laundering.
Required Documents
Have your National ID Card (NID), proof of address, and a selfie photo ready.
Processing Time
After the correct documents are submitted, verification is usually completed within 1–24 hours.
After Verification
Once verification is complete, you will get full withdrawal access, higher transaction limits, and VIP benefits.
VIP Rewards Program
Join the 4b99 VIP club and earn cashback on every bet. Your level goes up with your activity.
Betting Terms — A Guide for Beginners
From Sylhet to Dhaka — this glossary is for new players from every corner of Bangladesh.
RTP (Return to Player)
The rate at which a game returns a percentage of total bets to players over the long term. A higher RTP means a lower house edge over time.
House Edge
The average percentage of profit the casino keeps from each bet. Example: a 4% house edge means that over the long run, ৳4 out of every ৳100 goes in favour of the casino.
Wager
The amount of money you stake in a game is called a wager. For bonuses, the wagering requirement is the number of times you must bet before you can withdraw the bonus.
Odds
A numerical way of expressing the probability of an event. Higher odds mean a lower chance of winning but a higher potential reward.
Parlay / Accumulator (Parlay)
Multiple bets combined into one — a big win if all predictions are correct. If any single one is wrong, the entire bet is lost.
Live Bet
The ability to place bets in real time while a match or game is in progress. It is exciting due to changing odds and quick decisions.
Cashout
The ability to withdraw partial or full winnings from your bet before the match ends. Used to reduce risk and secure a guaranteed profit.
Bankroll
The total amount of money set aside for gaming. Proper bankroll management helps you enjoy gaming over the long term.
Free Spin
The chance to spin in a slot game without spending your own money. Usually given as part of a bonus offer or special promotion.
Volatility
The relationship between the frequency and size of wins in a slot game. High volatility means fewer but bigger wins; low volatility means frequent but smaller wins.
Spread
A bet in sports betting on the point or run difference between two teams. A prediction of how much one team will win by.
Wagering Requirement
The number of times you must bet that amount before you can withdraw winnings from a bonus or free spins. At 4b99, this is 25x.
24/7 Support — Always by Your Side
We are ready for any issue
At 4b99, you are never alone. Deposit issues, game questions, or account help — our Bengali-speaking support team is ready any time, day or night.
"A commitment to safe, fair, and genuine entertainment — in every game, at every moment."
For players in Bangladesh, service in Bengali.
Privacy & Data Protection
4b99 keeps your personal information completely confidential. In accordance with our SSL encryption and strict data protection policy, your information is never shared with third parties. To learn more, read our Privacy Policy.
Mahjong Ways — The Best Slot Experience
PG Soft's Mahjong Ways and Mahjong Ways 2 have become some of the most popular slot games in Bangladesh. Built on traditional mahjong tiles, these games feature a special Mystery Tile mechanic.
The free spin bonus round, cascading wins, and multiplier features make this game particularly appealing. At 4b99, the game runs smoothly on both mobile and desktop.