31bd Online Casino —
Get a 120% Bonus on Your First Deposit
Special Offer for New Members
Welcome to 31bd, Bangladesh's trusted betting platform. Enjoy cricket betting, live casino, slots, and more — fully in Bengali, with bKash and Nagad.
Start Playing in Just 4 Steps
From opening an account at 31bd to withdrawing your first winnings, the entire process is straightforward.
Sign Up
Go to the 31bd site and open an account in minutes with your name, mobile number, and password. No complications.
Make Your First Deposit
Deposit just ৳500 with bKash, Nagad, or Rocket and instantly receive a 120% welcome bonus — up to ৳8,000.
Play Your Favourite Games
Cricket betting, live casino, slots, or crash games — pick what you like and start with your bonus.
Withdraw Your Winnings
Once the wagering requirement is met, your winnings will be sent directly to your bKash or Nagad within just 1 hour.
Bonus Terms Explained in Plain Language
31bd's bonus offer is fully transparent. The key details are summarised below.
| Bonus Type | Amount | Maximum | Wagering |
|---|---|---|---|
| Welcome Bonus (First Deposit) | 120% | ৳8,000 | 10× (on the bonus amount) |
| VIP Weekly Cashback | Bronze 0.2% to Diamond 1.0% | By tier | Not applicable |
Wagering Requirement
Bonus funds cannot be withdrawn directly — they must be wagered a set number of times. At 31bd, wagering is calculated on the bonus amount only, not on the deposit plus bonus.
Example: A ৳1,000 deposit earns a ৳1,200 bonus. Place ৳1,200 × 10 = ৳12,000 in bets and you can withdraw the bonus winnings.
Game Contribution
Not all games count equally toward wagering. Slot games typically count in full, while table games and live casino games may count partially. Check the specific terms before claiming a bonus.
Maximum Bet While Bonus Is Active
When a bonus is active, there is a limit on how much you can bet per round. Exceeding it may result in the bonus being cancelled. Before placing large bets, either clear your bonus balance first or read the terms carefully.
Bonus Expiry & Cash-Out
Every bonus has an expiry date — if wagering is not completed within the set timeframe, both the bonus and any winnings from it will be forfeited. There is also a cap on how much can be withdrawn from a bonus.
Introduction to Game Categories
31bd offers a variety of games tailored for players in Bangladesh. Learn about each category below.
Cricket Betting
Bet on Bangladesh's most popular sport. Major tournaments including BPL, IPL, and T20 World Cup offer markets such as match winner, toss, top batsman, and more. Live in-play betting doubles the excitement.
Bangladesh TigersSlot Games
Hundreds of slot games on one platform. Titles from the world's top providers — including PG Soft, Pragmatic Play, and JILI — are available here. Each slot offers a distinct experience with different themes, features, and bonus rounds.
PG Soft • JILI • PragmaticLive Casino
Play Baccarat, Roulette, and Blackjack with real dealers in real time. Games streamed live from Evolution Gaming and Ezugi studios give you the feel of a real casino.
Evolution • EzugiTable Games
Classic table games like Baccarat, Roulette, and Blackjack. These games blend strategy and luck, making them a firm favourite with experienced players. Available in both software-based and live versions.
Baccarat • RouletteTeen Patti & Andar Bahar
Traditional South Asian card games, now available online. JILI's TeenPatti Joker and Teen Patti 20-20 have quickly gained popularity among players in Bangladesh. Andar Bahar is a straightforward prediction-based game.
JILI Teen PattiBingo & Crash Games
Multiple bingo titles are available, including JILI's Fortune Bingo and Lucky Bingo. In crash games, Aviator (Spribe) is among the most popular — the multiplier keeps rising and you need to cash out before it crashes.
Aviator • Fortune BingoRelax Fishing
Fishing games are a distinct category where players hunt fish in a virtual ocean to win prizes. Titles in this category include JILI's Mega Fishing and Ocean King Jackpot, among others. Both team and solo modes are available.
Learn MoreTexas Hold'em
Texas Hold'em is the world's most popular poker variant. Each player is dealt two hole cards and uses five community cards to build the best hand. It is a skill-based game that combines strategy, calculation, and psychology.
Learn MoreCricket Betting Markets
31bd offers almost every type of cricket bet. You can bet not just on match results, but on individual overs as well.
Match Winner (Match Winner)
Bet on which team will win the match. For example, pick either side in a Bangladesh vs India game.
Toss Winner (Toss Winner)
Bet on the toss result before the match starts. The outcome is known at the very first moment of the game.
Top Batsman (Top Batsman)
Bet on which batsman will score the most runs. Available for a single innings or the full match.
Total Runs Over/Under (Total Runs O/U)
Bet on whether the total runs in an innings or a specific powerplay will be above or below a set number.
Runs in an Over (Runs in an Over)
Bet on how many runs will be scored in a specific over. This is especially thrilling in live betting.
Method of Dismissal (Method of Dismissal)
Bet on how the next wicket will fall — caught, bowled, LBW, or run out.
Live In-Play Betting
Odds shift after every wicket or big shot during the match. The odds on the trailing team go up while those on the leading team come down. Live betting is about making quick decisions — opportunities appear and disappear with every ball.
Live Casino Tables
Games streamed live from real studios — just like sitting at an actual casino.
Baccarat
Choose from Player, Banker, or Tie. Simple rules, fast rounds. Table limits are available across a range of sizes, from small to large.
Roulette
Available in both European and American versions. Pick a number, a colour, or a group of numbers — the excitement peaks as the wheel spins.
Blackjack
Beat the dealer by getting as close to 21 as possible. Hit, Stand, Double Down, or Split — strategic decisions make all the difference here.
Live Andar Bahar
A card is drawn from the deck, and the remaining cards are placed on the Andar or Bahar side. Bet on which side the matching card will land.
Game Show Wheels
Large wheel game shows in the style of Crazy Time and Dream Catcher — the wheel stops on a number or bonus slot for a chance to win massive multipliers. Enjoyable for everyone.
Live Dragon Tiger
Dragon or Tiger — just two cards, and the higher value wins. One of the simplest live casino games, with rounds lasting only a few seconds.
Crash Games — Cash Out at the Right Moment
Crash games like Aviator (Spribe) and JetX are among the most thrilling categories in online gaming. Each round starts at a 1.00x multiplier that gradually rises. Your job is to hit the cash-out button before the multiplier crashes.
With the auto cash-out feature, you can set a multiplier in advance — once it is reached, the system will cash out automatically.
Each round lasts anywhere from a few seconds to a few minutes. Before playing, set a stop limit for yourself — do not trust any "signals" or "prediction tools," they are completely fake.
Jackpot Games — A Chance to Change Your Life
31bd offers several types of jackpot games, each with a different way to win.
Progressive Jackpot Slots
A portion of every bet goes into the jackpot pool, which keeps growing until someone wins. The jackpot is triggered by special symbols or a bonus round.
Fixed Jackpot Slots
A jackpot of a set amount, won through a bonus game or a specific combination. The pool does not grow, but there is a guaranteed amount to be won.
Live Casino Side-Bet Jackpot
When you place a side bet alongside Baccarat or Blackjack, certain card combinations give you a chance to win a separate jackpot.
Crash Game Multiplier
In games like Aviator, the higher the multiplier climbs, the bigger the win. In some rounds the multiplier reaches unusually high levels — that is the biggest prize this category has to offer.
Quick Deposits via bKash & Nagad
Add funds to your account instantly using your mobile wallet. Minimum deposit is just ৳500.
bKash
Bangladesh's most widely used mobile wallet. Users with a bKash account can deposit faster than anyone else.
Nagad
The mobile financial service from Bangladesh Post Office. Widely used in Dhaka and across the country — the deposit process is just as simple as bKash.
Rocket & Bank Transfer
DBBL's Rocket mobile wallet or direct bank transfer (Dutch-Bangla, Islami Bank, BRAC Bank) — ideal for depositing larger amounts.
About Withdrawals
Minimum withdrawal is ৳1,000. Funds typically reach your bKash, Nagad, or Rocket within 1 hour.
Betting Exchange — Back vs Lay
A betting exchange is completely different from a regular sportsbook. Here you place bets against other players.
In a regular sportsbook you always play against the house — the platform sets the odds and profits from your losses. In a betting exchange, odds are set by other players. The platform acts only as an intermediary and takes a small commission.
What is a Back Bet?
Backing means betting on a team or player to win. Example: you place a ৳500 Back bet on Bangladesh to win the match. If they win, you profit according to the odds; if they lose, your entire stake is gone.
What is a Lay Bet?
Laying means betting on a team to lose. In this case you take on the role of the bookmaker. A Lay bet has a higher chance of winning, but if it loses, your losses can be greater.
Commission: On the exchange, a small percentage commission is deducted from every winning bet. This is how the platform earns revenue — it is not the same as a house edge.
| Feature | Back Bet | Lay Bet |
|---|---|---|
| You believe | Team will win | Team will lose |
| Your role | Regular bettor | Bookmaker |
| Chance of winning | Lower (one team) | Higher (all others) |
| Loss if wrong | Stake only | Higher, based on Liability |
| Example (৳500) | Risk ৳500 — if correct, win odds × ৳500 | Small profit — if correct, win ৳500; if wrong, pay Liability |
RTP and House Edge Explained
RTP, or Return to Player, is the theoretical percentage of total wagers that a game returns to players over the long run. Example: a slot with 96% RTP means that on average ৳96 is returned for every ৳100 wagered — but this is an average across millions of spins, not a guarantee for any single session.
House edge is the other side of RTP — the percentage the casino retains. If RTP is 96%, the house edge is 4%. This number may seem small, but over time it makes a significant difference.
Typical RTP ranges by game type: slot games 92–98%, blackjack around 99%, roulette 94–97%. A higher RTP means a lower house edge — but it is not a guarantee of winning.
Understanding volatility, or variance, is also important. In high-volatility games wins come less often but tend to be larger; in low-volatility games smaller wins come more frequently. Knowing the RTP and volatility of a game before you play makes it easier to plan your budget.
Top Game Providers
31bd offers games from the world's leading software providers. Each provider excels in its own specialty.
Pragmatic Play
Malta-based Pragmatic Play leads in both slot games and live casino. They release new games every week and host tournaments with large prize pools.
Popular games: Gates of Olympus, Sweet Bonanza, Sugar Rush
PG Soft
PG Soft (Pocket Games Soft) is known for mobile-first slot games. Highly popular among Bangladeshi players for its Asian themes and innovative mechanics.
Popular games: Mahjong Ways, Treasures of Aztec, Fortune Tiger, Lucky Neko
JILI
JILI's fishing games, slots, and classic Asian card games have been very well received in Bangladesh. Known for straightforward gameplay and quick rewards.
Popular games: Fortune Gems, Money Coming, Mega Fishing, Boom Legend
Evolution Gaming
The undisputed global leader in live casino games. Baccarat, blackjack, and game shows streamed directly from Evolution's studios — unmatched in quality and reliability.
Categories: Live Baccarat, Live Roulette, Game Shows, Live Poker
Spribe
Spribe is the pioneer of the crash game category — the creator of Aviator. Their games are known for simple rules and exciting mechanics.
Popular game: Aviator
Microgaming
One of the founding providers of the online casino industry. They remain a top name with a vast portfolio of hundreds of classic slots and table games.
Categories: Classic Slots, Table Games, Progressive Jackpots
Watch Out for Fake Sites & Scams
Always check that the address bar in your browser shows 31bd.lat and the HTTPS lock icon. Any slight change in the spelling or domain extension means the site is fake.
31bd support will never ask for your bKash or Nagad PIN, OTP, or password. If anyone asks, it is a scam.
Our support team will never ask for your account password or full card number. If you have any suspicion, contact us directly via live chat.
Groups or individuals on social media offering "agent" services or "recharge offers" in the name of 31bd are scammers. Do not send money through any third party.
Change your account password immediately. Then report the full details to 31bd via live chat or by emailing [email protected].
VIP Club — The More You Play, the More You Get
31bd's VIP program has five tiers. Weekly cashback increases with each tier.
Bronze
Weekly Cashback
Up to 0.2%
Silver
Weekly Cashback
Up to 0.4%
Gold
Weekly Cashback
Up to 0.6%
Platinum
Weekly Cashback
Up to 0.8%
Diamond
Weekly Cashback
Up to 1.0%
The more you play, the faster you move up the tiers. Each week, cashback on your total wagers is added directly to your balance. The Diamond tier comes with special benefits and a dedicated account manager.
31bd's Mission & Commitment
31bd was built with a straightforward goal — to create a complete, trustworthy, and enjoyable online betting experience for players in Bangladesh. We believe the people of Bangladesh deserve a top-quality gaming platform — in Bengali, with local payment methods, and with the highest level of security.
Our platform uses SSL encryption and ensures Fair Play. Every game result is verified through independent third-party technical processes. We do not interfere with the outcome of any game and pay out all winnings honestly.
Responsible gaming is part of our values. We want you to play with awareness, within a set budget, and for enjoyment. Visit our responsible gaming page to learn more about self-control tools.
24/7 Support — For Any Issue
31bd's support team is ready to assist in both Bengali and English, day and night.
Live Chat
Start a live chat from any page on the site. A support agent will respond in Bengali right away.
Email Support
For detailed issues, send an email to [email protected] — you can write in Bengali or English.
Deposit & Withdrawal Assistance
If you have any issue with bKash, Nagad, or bank transfer, the support team will resolve it promptly.
Bonuses & Account
For issues with bonus credits not appearing, account verification, or technical problems, contact support directly.
Join 31bd Now —
Get Up to ৳8,000 Bonus on Your First Deposit
Deposit just ৳500 via bKash or Nagad and enjoy a 120% welcome bonus. For players aged 21 and above only.
Log in to 31bd