New members at 31bd online casino get a 200% bonus on their first deposit — take advantage of this opportunity right now
Deposit as little as ৳200 via bKash, Nagad, Rocket, or Upay and enjoy live casino, cricket betting, and popular slot games. Bengali-language support is available 24/7, always by your side.
Exclusive offer for new members
Welcome bonus — get it on your first deposit
- Get a 200% match bonus on your first deposit
- Maximum bonus up to ৳10,000
- Wagering requirement of only 10x
- Deposit via bKash, Nagad, Rocket, and Upay
- Minimum deposit of only ৳200
- Applicable to new accounts only
Why choose 31bd?
A reliable platform built with Bangladeshi players in mind.
Fast Withdrawal
Receive funds directly to bKash or Nagad within 15 minutes to 2 hours.
SSL Security
Your information and transactions are protected with the highest level of encryption.
Support in Bengali
Bengali-speaking live chat support is available 24 hours a day, 7 days a week.
Easy Payments
bKash, Nagad, Rocket, and Upay — all mobile wallets supported.
Cricket and Sports
Live betting on all major tournaments including BPL, IPL, and the T20 World Cup.
Live Casino
Play real dealer games from Evolution Gaming and Ezugi live.
VIP Rewards
Earn weekly cashback and special privileges across five VIP tiers.
Mobile-Friendly
Play easily from any smartphone — no app download needed.
Get started in just a few steps
A simple step-by-step guide for new players.
Create an account
Register quickly with your mobile number and name.
Verification
Confirm your number with an SMS code.
First deposit
Deposit a minimum of ৳200 via bKash or Nagad.
Claim your bonus
A bonus of up to 200% will be added to your account automatically.
First play
Cricket betting, slots, or live casino — play whatever you like.
Withdrawal
When you win, transfer ৳1,000 or more directly to your mobile wallet.
Types of Slot Games
Online slots are not all the same — each type has its own fun and features.
Classic Slots
Simple three-reel games with fruit, bell, and BAR symbols. Classic slots from NetEnt and Microgaming are popular in this category.
Video Slots
Five reels, graphical themes, and bonus rounds. Pragmatic Play's Gates of Olympus and Sweet Bonanza are examples of this type.
Jackpot Slots
A small portion of every bet accumulates into a massive progressive prize. Microgaming is well known for games of this type.
Megaways Slots
The number of winning paths changes with every spin, creating millions of combinations. Big Time Gaming developed the Megaways mechanic.
Cascading Reels
Winning symbols disappear and new ones drop in — giving you the chance to win multiple times from a single spin. PG Soft's Mahjong Ways is a great example.
Cluster Pays
Instead of paylines, a cluster of matching adjacent symbols brings a win. Many modern slots from NetEnt use this mechanic.
RTP and House Edge Explained
RTP, or Return to Player, is the long-term mathematical return rate of a game. Simply put, if a game has an RTP of 96%, an average of ৳96 is returned to players for every ৳100 wagered. This is not a guarantee for any individual session — it is an average calculated across millions of spins.
The average RTP range varies across different game categories. Online slots typically show an RTP of 92% to 98%. Blackjack can approach around 99% RTP when the correct strategy is followed. For roulette, European roulette generally offers an RTP above 94%, while American roulette is somewhat lower.
House edge is the other side of RTP — it is the casino's long-term advantage rate. For example, a game with 96% RTP has a house edge of 4%. This does not mean the casino wins every round; rather, it is a statistical margin that shows up as an average across many bets from many players.
Understanding RTP and house edge before you play is important because it helps you make informed decisions. A higher RTP means your budget is more likely to last longer. Keep in mind, though, that chance plays a role in all casino games — no strategy can guarantee a win.
Typical RTP ranges by game category
| Game Category | RTP Range |
|---|---|
| Online Slots | 92% – 98% |
| Blackjack | Around 99% |
| Roulette (European) | 94% – 97% |
| Video Poker | 95% – 99% |
| Baccarat | Up to 98% |
| Crash Games | Variable |
* These figures are general industry ranges; the specific RTP of each game may differ.
Loyalty and Rewards Program
The more you play at 31bd, the more rewards you earn. Points accumulate with every bet placed in our five-tier VIP program. You can use your accumulated points to receive weekly cashback, special bonuses, and exclusive benefits. Reaching higher tiers unlocks a personal account manager and even greater rewards.
Loyalty points are earned with every bet placed on any game. Playing regularly, wagering higher amounts, and participating across different game categories will move you to the next tier faster. Once you advance to a tier, you can enjoy all the benefits that come with it.
Bronze
0.2%
Weekly cashback up to
Silver
0.3%
Weekly cashback up to
Gold
0.5%
Weekly cashback up to
Platinum
0.6%
Weekly cashback up to
Diamond
0.8%
Weekly cashback up to
What is a Betting Exchange?
In a traditional sportsbook you bet against the casino. In a betting exchange you bet against other players — the casino acts only as an intermediary and takes a small commission. The odds are market-driven, so more favorable values are often available.
Back Bet: You believe a certain team or outcome will happen — this works like a regular bet. Lay Bet: You believe a certain outcome will not happen — you essentially take on the role of the bookmaker.
Example: Bangladesh vs India match
You placed a Back Bet of ৳500 on Bangladesh to win at odds of 2.5.
If you win: ৳500 × (2.5 − 1) = ৳750 profit.
If you lose: ৳500 loss.
A small percentage commission is typically deducted from winnings on the exchange — this is the casino's source of income.
| Aspect | Back Bet | Lay Bet |
|---|---|---|
| Meaning | Outcome will happen | Outcome will not happen |
| Role | Regular bettor | Like a bookmaker |
| Maximum profit | Unlimited (based on odds) | Fixed (lay stake) |
| Maximum Loss | Stake Amount | Liability Amount |
Refer a Friend
Invite a friend to 31bd and both of you get rewards.
Share Your Referral Link
Get your personal referral link from your account and send it to friends or family.
Friend Signs Up & Deposits
Your friend opens an account using your link and makes their first deposit.
Both of You Get Rewards
The referral bonus is automatically added to both your account and your friend's account.
Referral Terms & Conditions
- The same person cannot refer themselves
- Only one account per device and IP address will be counted
- The friend must make their first deposit to receive the bonus
- The referral bonus is subject to its own wagering conditions
Customer Support Channels
Whatever the issue, the 31bd support team is always by your side. Our Bengali-speaking support agents are ready to help you 24 hours a day, 7 days a week.
Live Chat
The fastest channel for immediate help. Use it for account issues, payment questions, or any urgent matter.
24/7 ActiveEmail Support
Ideal for detailed questions, submitting documents, or account verification. Write to us at:
In-App Messaging
Send a message directly from within the platform. Reach us easily while you are logged in.
FAQ Section
Visit our detailed FAQ page for answers to common questions — you will often find a solution right away.
Beware of Fake Sites and Scams
Some scammers online copy the 31bd name to run fake sites and Telegram groups. Read the list below carefully and stay safe.
About Our Privacy Policy
31bd does not sell your personal information to any third party. Your information is used only to manage your account and confirm transactions. To learn more, visit our Privacy Policy page.
Responsible Gaming Tools
31bd believes entertainment is enjoyable only when it is done in a controlled and mindful way. We encourage all our players to play responsibly. This platform is for users aged 21 and above only.
Self-Exclusion
Temporarily close your account for a set period — from 1 week to permanently. You will find this option in your account settings.
Deposit Limit
Set a maximum daily, weekly, or monthly deposit limit. Once a limit is set, it can be lowered but not raised.
Loss Limit
Set the maximum loss you are willing to accept within a given period. Once the limit is reached, betting will stop automatically.
Session Time Limit
Set a maximum duration for each gaming session. You will be logged out automatically when the limit is reached.
Reality Check
A reminder popup will appear at set intervals — showing a summary of how long you have been playing and how much you have won or lost.
Self-Assessment Quiz
Use our self-assessment questionnaire to find out whether your gaming habits are healthy. See more on our Responsible Gaming page.
Need help?
If you feel that gambling is causing problems in your life, please contact our support team via live chat or at [email protected]. We are ready to help with full confidentiality.
Player Reviews
Here is what players from across Bangladesh are saying about 31bd.
"Withdrawing to bKash used to take hours on other sites. On 31bd the money arrives in just a few minutes. Having support in Bengali is the biggest advantage."
Rafiul Islam
Dhaka • BPL Bettor
"I got a special offer on Pohela Boishakh and won quite well with it. The live casino dealers are very professional. Once you come here, you don't want to leave!"
Sumaiya Begum
Chittagong • Live Casino
"Live betting on Bangladesh Tigers matches is a completely different thrill. The odds are really good and the interface is very easy to use. Starting with the welcome bonus was hassle-free."
Tanvir Ahmed
Sylhet • Cricket Betting
Join 31bd Now
Get a 200% bonus on your first deposit and enjoy the best betting experience in Bangladesh. For ages 21+ only.