ck31 Mobile Casino — Bangladesh's top online gaming experience in your hands anytime
Enjoy live casino, cricket betting, and thousands of slot games right from your smartphone. Fast deposits and withdrawals with bKash, Nagad, and Rocket, plus 24/7 support in Bengali.
"ck31 — A safe, fast, and exciting mobile betting experience for every player in Bangladesh."
Welcome Bonus Offer
ck31 brings new members a great start. Get a 100% bonus on your first deposit.
Up to 100% First Deposit Bonus
- Minimum deposit of just ৳500
- Wagering requirement of just 10x
- Deposit with bKash, Nagad, Rocket, and Upay
- Withdrawals processed within 5-30 minutes
Special Offers
Steps to Get Started
Joining ck31 and placing your first bet is easy — get ready in just a few minutes.
Create an Account
Go to the ck31 Login page and register with your mobile number and password.
Verification
Confirm your identity with the OTP sent to your mobile. The process is quick and secure.
First Deposit
Deposit ৳500 or more using bKash, Nagad, Rocket, or Upay.
Claim Your Bonus
The welcome bonus will be added to your account automatically. 10x wagering applies.
Start Playing
Start with slots, live casino, or cricket betting — whatever you prefer.
Withdrawal
When you win, your money will reach your mobile wallet in 5-30 minutes.
Why Choose ck31
Thousands of players in Bangladesh choose ck31 every day for its speed, security, and genuine fun.
Fastest Payments
Withdrawals within 5-30 minutes — via bKash and Nagad.
Fast WithdrawalsSSL Protection
SSL encryption and two-factor login security are always active.
SecureLive Cricket Betting
BPL, IPL, T20 World Cup — real-time markets on every match.
LiveSupport in Bengali
Bengali-speaking support team available on 24/7 live chat.
24/7Mobile Optimized
Smooth experience on both Android and iOS.
Mobile FirstRegular Bonuses
Weekly cashback, reload bonuses, and VIP rewards.
BonusesThousands of Games
Slots, fishing, live tables, sports — all on one platform.
Extensive LibraryVIP Program
In the 4-tier VIP program, the more you play, the more benefits you receive.
Exclusiveck31 VIP Program
Keep playing and move up — more benefits await you at every level.
Bronze
0.4% Cashback
Weekly
- Weekly cashback up to 0.4%
- Priority live chat support
- Exclusive member offers
- Special birthday gift
Silver
0.8% Cashback
Weekly
- Weekly cashback up to 0.8%
- Faster withdrawal processing
- Special reload bonus
- Priority access to tournaments
Gold
1.1% Cashback
Weekly
- Weekly cashback up to 1.1%
- Personal account manager
- Invitation to exclusive events
- Higher withdrawal limits
Platinum
1.5% Cashback
Weekly
- Weekly cashback up to 1.5%
- Top-priority withdrawals
- Dedicated VIP host
- Luxury gifts and rewards
The more active you are, the faster you move up to the next level.
Live Casino Tables
Join real dealer tables from Evolution Gaming, Ezugi, and other top providers. Players from Dhaka and across Bangladesh play here every day.
Baccarat
Player or Banker — whoever gets closest to 9 wins. Simple rules, exciting gameplay.
Table limits: ৳200 – ৳100,000 (example)
Roulette
Bet on numbers, colors, or groups in European and live roulette.
Table limits: ৳100 – ৳50,000 (example)
Blackjack
Beat the dealer without going over 21 — a blend of strategy and skill.
Table limits: ৳500 – ৳200,000 (example)
Andar Bahar Live
The popular South Asian card game — play with a live dealer.
Table limits: ৳100 – ৳25,000 (example)
Game Show Wheel
Money Wheel, Crazy Time — live entertainment with the chance to win big prizes.
Table limits: ৳50 – ৳10,000 (example)
Sic Bo
Bet on three dice — a live experience rooted in Asian tradition.
Table Limits: ৳100 – ৳30,000 (for example)
Local Card Games
Favorite card games from Bangladesh and South Asia are now online — play against a live dealer or other players.
Teen Patti
Build the best hand from three cards and force other players to play blind or seen. Place bets in Pool Rummy style. Tip: Start with small bets.
Against other players
Andar Bahar
A card is dealt — Andar (left) or Bahar (right) — guess which side a card of the same value will land on. Tip: There is a slightly higher chance of it landing on Andar.
Against a live dealer
Callbreak
4 players, 52 cards — you must predict the number of hands you will win each round. Tip: Use Spade cards as trumps strategically.
Against other players
Ludo & Rummy
Familiar board games are now online — race all 4 tokens in Ludo and build sets and sequences in Pool Rummy. Tip: Plan ahead before breaking a token lock.
Against other players
Fishing & Arcade Games
In fishing games, upgrade your cannon power and aim for bigger fish — each fish has its own multiplier. JILI's Mega Fishing and All-star Fishing are especially popular.
How it works
- Upgrading the cannon level increases the cost per shot but also increases the rewards
- From common fish to boss fish — boss fish carry the highest multipliers
- Monitor your shot cost and balance to decide the right cannon level
Types of arcade games
- Crash Game: Aviator (Spribe) — cash out before the multiplier crashes
- Coin Push: Push coins to fill the bonus zone
- Scratch Card: Instant prize opportunities
- Shooter Arcade: Hit targets to earn points
Cricket Format Guide
Betting markets differ for each format — understanding them gives you a better chance of winning.
T20
20 overs per side, match duration 3–4 hours. The most fast-paced format — live betting markets offer in-play ball-by-ball odds.
ODI (One-Day)
50 overs per side, a full-day match. You can bet on markets like top batsman, total runs, and first wicket.
Test
A 5-day match with unlimited overs per innings. Match result, series winner, and innings total betting are popular.
The Hundred
100 balls per side — England's new format. The bowler can be changed every 5 balls; fast-moving betting markets are available.
Major Leagues
BPL (Bangladesh Premier League) — Bangladesh's premier T20 tournament. IPL — Indian Premier League, the world's most popular T20 league. BBL — Australia's Big Bash League. PSL — Pakistan Super League. Detailed betting markets for every league are available on ck31.
Cricket Partnership Trends
Cricket sponsorship has become a major trend in Bangladesh's betting market. Various online platforms are now signing deals with international cricket teams and players.
For example, Babu88 has partnered with the Montreal Tigers and Colombo Strikers, Crickex has sponsored regional tournaments, and Jeetbuzz has made West Indies star Andre Russell a brand ambassador.
This trend shows how closely online betting and cricket are connected. Alongside the success of the Bangladesh Tigers, the country's betting culture is also growing.
How to Read Odds
Decimal Odds (Simple Example)
Decimal odds are the simplest format. Just multiply your stake by the odds to get the total return.
Example: You place a ৳500 bet at odds of 1.80.
Total return = ৳500 × 1.80 = ৳900
Profit = ৳900 − ৳500 = ৳400
Implied Probability
To find out what probability the odds represent, calculate 1 ÷ odds × 100. Odds of 1.80 imply roughly a 55.6% chance of winning.
Comparison Reference
| Format | Example | Meaning |
|---|---|---|
| Decimal | 1.80 | ৳180 return on a ৳100 bet |
| Fractional | 4/5 | ৳4 profit for every ৳5 staked |
| American (Minus) | -125 | Stake ৳125 to profit ৳100 |
| American (Plus) | +150 | Stake ৳100 to profit ৳150 |
RTP and House Edge Explained
RTP (Return to Player) is a theoretical percentage indicating how much of the total amount wagered will be paid back as winnings over a long period. For example, if a game has an RTP of 96%, it theoretically returns an average of ৳96 for every ৳100 staked.
RTP varies by game type. Generally, slot games have an RTP of 92–98%, blackjack around 99%, and roulette 94–97%. However, these figures are averages over millions of rounds — results in a single session can vary significantly.
House edge is the flip side of RTP. If RTP is 96%, the house edge is 4%. This means the casino retains an average of 4% of every bet over the long term.
Why does this matter? Because choosing games with a higher RTP means your money lasts longer and the experience is more enjoyable. Keep in mind though — RTP is a long-term average only, and the outcome of every round is completely random.
Typical RTP Ranges
* These are theoretical averages — results may vary in each session.
Bankroll Management Guide
1. Set a budget: Before you start playing, set aside a fixed amount of money that you can afford to lose without affecting your daily life. This amount should never exceed your monthly entertainment budget.
2. Split into sessions: Divide your total bankroll into smaller sessions. If your monthly budget is ৳5,000, splitting it into 5 sessions of ৳1,000 each is a sensible approach.
3. The 1–5% rule: Each bet should not exceed 1% to 5% of your total bankroll. Smaller bets give you more playing time and reduce risk.
4. When to stop after winning: If you win 50% or more of your starting bankroll, set a "win limit." Placing large bets impulsively after a win and losing it all back is a common mistake.
5. When to stop after losing: Set a "loss limit" before each session — for example, 50% of the session bankroll. Once you hit that limit, stop playing for the day. Chasing losses by placing more bets is the most dangerous habit.
6. Track your history: Record your deposits, bets, and winnings for each session in a notebook or app. This will help you understand your actual situation and maintain healthy habits.
Key Principles
- Only use money set aside for entertainment
- Maximum 5% of bankroll per bet
- Respect your loss limit
- Respect your limits even after winning
- Keep a record of your play history
- Do not chase losses
ck31 Android App
Players in Bangladesh prefer the mobile app because it uses less data, bKash and Nagad deposits are instant, and you can bet on live cricket on the go.
Installation Steps
- Download the APK file only from the official site ck31.cam
- Go to Android Settings → Security → enable "Install from unknown sources"
- Tap the downloaded APK file to install it
- Log in to your account and start playing
- For security, turn off the "unknown sources" setting again after installation
Warning: Never install the app from Telegram, Facebook, or any other unofficial source — these may be fake and harmful.
Minimum requirements: Android 7.0 or later; approximately 100 MB of free space.
Log In
Payment Methods & Processing Times
Minimum deposit and withdrawal ৳500. Secure transactions guaranteed across all methods.
| Method | Minimum Deposit | Deposit Time | Withdrawal Time | Fee |
|---|---|---|---|---|
| bKash | ৳500 | Instant | 5–30 minutes | Free |
| Nagad | ৳500 | Instant | 5–30 minutes | Free |
| Rocket | ৳500 | Instant | 5–30 minutes | Free |
| Upay | ৳500 | Instant | 5–30 minutes | Free |
| Dutch-Bangla Bank | ৳500 | 15 minutes – 1 hour | 1–24 hours | Bank charges apply |
| City Bank | ৳500 | 15 minutes – 1 hour | 1–24 hours | Bank charges apply |
| BRAC Bank | ৳500 | 15 minutes – 1 hour | 1–24 hours | Bank charges apply |
* Withdrawal times may vary depending on network conditions.
Get started with ck31 now
Experience Bangladesh's best mobile casino — starting from ৳500, bonuses up to ৳8,000.
Create AccountResponsible Gaming Tools
ck31 believes that gaming is a form of entertainment — not a financial solution. That's why we provide every player with the following tools to play safely and responsibly.
Deposit Limit
Set a maximum deposit amount on a daily, weekly, or monthly basis.
Loss Limit
Your account is automatically restricted once you have lost a set amount.
Session Time Limit
Decide in advance how long you want to play in a single session.
Reality Check
Pop-up reminders at set intervals keep you aware of how much you have spent.
Self-Exclusion
You can exclude yourself for anywhere from 7 days up to permanently.
Self-Assessment Quiz
A simple questionnaire to check whether your gaming habits are healthy.
Get help if you need it: If you feel gaming is getting out of control, contact our 24/7 live chat support. For more information, visit our Responsible Gaming page.
For ages 21 and above only
ck31 strictly prohibits gaming by minors. Age verification is mandatory at the time of registration.
ck31 About
ck31 is a trusted online gaming platform built with Bangladeshi players in mind. Our goal is to give every Bangladeshi user a safe, transparent, and exciting gaming experience — in their language and through methods they are familiar with.
We rely entirely on Bangladesh's mobile payment ecosystem — instant transactions are possible with bKash, Nagad, Rocket, and Upay. Every account is secured with SSL encryption and two-factor authentication.
24/7 live chat support in Bengali, hundreds of internationally standard games, and a rewarding VIP program — ck31 is not just a casino, it is a trusted part of Bangladesh's growing online gaming community.
Privacy Policy Notice
ck31 gives the highest priority to protecting your personal information. Data collected during registration and transactions is used solely for providing services and securing your account — it is never sold or shared with any third party.
We use SSL encryption and store your data on secure servers. To learn more, visit our Privacy Policy page.
Legal Notice
(a) Nature of the Platform: ck31 is an online gaming platform. It does not claim approval from any specific license or regulatory authority.
(b) Legal Ambiguity: Bangladesh's Public Gambling Act was enacted in 1867 — before online betting existed. This law does not clearly define online gaming, which means this area remains legally ambiguous.
(c) User Responsibility: Each user is solely responsible for complying with their local laws. Before using ck31, make sure you are aware of the laws applicable in your area.
(d) Age Restriction: This platform is for users aged 21 and above only. Minors are strictly prohibited from creating accounts or playing games.
(e) Responsible Gaming: Visit our Responsible Gaming page for tools and guidelines to help prevent gaming addiction.