21tk Betting App — Play and Win Anytime, Anywhere on Mobile
Start with just ৳500 deposited via bKash, Nagad, or Rocket. Live casino, cricket betting, and slots — all in one place.
Get Your Welcome 150% Bonus Today
- 150% bonus on your first deposit, up to ৳5,000
- Wagering requirement of just 25 times (25x)
- Deposit a minimum of ৳500 via bKash, Nagad, or Rocket
- Bonus can be used on slots, live casino, and sports
- Applicable to new accounts only
New Winners Every Day
Steps to Get Started
Joining 21tk is simple. Follow the steps below and start playing today.
Create an Account
Open a free account in minutes using your mobile number and password. No paperwork required.
Identity Verification (KYC)
Upload a photo of your national ID card or passport. Verification is usually completed quickly.
First Deposit
Easily deposit ৳500 or more from bKash, Nagad, or Rocket. This is the best opportunity to receive cashback and bonus offers.
Claim Your Welcome Bonus
After your deposit, a bonus of up to 150% — up to ৳5,000 — will be automatically added to your account. The bonus terms are simple and transparent.
First Game or Bet
Play slots, bet on live cricket, or enjoy casino games with a live dealer — the choice is yours.
Withdraw Your Winnings
Withdraw your winnings directly to bKash, Nagad, or Rocket within one hour. Minimum withdrawal is just ৳800.
Game Categories
From slots to live casino, cricket betting to fishing — all types of games in one place.
Fishing and Arcade Games
Fishing games are growing in popularity in Bangladesh. In these games, you hunt various types of fish underwater. Each fish has its own value — smaller fish give lower rewards, while big boss fish give higher rewards.
You can upgrade your cannon level to hunt more powerful fish, but the cost per shot also increases. So it is wise to set your cannon power according to your budget. Boss fish give big multipliers, but they are hard to defeat.
Fishing Game
Catch different fish and win rewards
Boss Fish
Target the boss fish for big rewards
Cannon Upgrade
Choose your cannon level according to your budget
Arcade Jackpot
Chance to win big in special arcade rounds
Built for Bangladeshis
21tk is not just an international platform — it is built with Bangladesh players in mind. A fully Bengali interface, support aligned with Bangladesh Standard Time (BST, UTC+6), and local payment methods — all available here.
- Platform and customer support fully in Bengali
- Instant transactions via bKash, Nagad, and Rocket
- All balances in Bangladeshi Taka (৳ BDT)
- BPL, IPL, and T20 cricket betting live
- Mobile-friendly — available on both Android and iOS
- Live chat support 24 hours a day, 7 days a week
Jackpots and Big Wins
Every day, 21tk players are winning big rewards. You could be next.
You can join these winners too. Play now and win the jackpot.
Play NowCricket Format Explained
Cricket fans in Bangladesh should understand the different formats before placing bets. The betting markets vary for each format.
T20 Cricket
20 overs per team, match duration around 3 hours. In-play betting, six markets, and super over — the fastest and most exciting format.
One-Day Cricket
50 overs per team, match duration around 8 hours. More variety in powerplay and mid-innings markets.
Test Cricket
5 days of play, 4 innings. Series betting, day-by-day markets, and series scores — plenty of room for in-depth analysis.
The Hundred
100 balls per team, a unique set system. Special betting markets available in this modern format.
Leagues: BPL (Bangladesh Premier League), IPL (Indian Premier League), BBL (Big Bash League), and PSL (Pakistan Super League) — all major leagues available to bet on here.
Trusted Game Providers
Our partnerships with the world's leading game developers give you a top-quality gaming experience.
Pragmatic Play
Hundreds of popular slot games including Gates of Olympus, Sweet Bonanza, and Sugar Rush. New releases every week.
Evolution Gaming
The world's number one provider for live dealer casino. Real dealers, real tables.
Spribe
Spribe, the creator of Aviator. A leading provider in the crash game category worldwide.
Why Choose 21tk
Built on speed, security, and transparency, 21tk delivers a quality experience for players in Bangladesh.
Fast Withdrawals
Your winnings will reach your bKash or Nagad directly within one hour.
Secure Platform
Your account and funds are protected with SSL encryption and two-layer security.
Mobile First
Play effortlessly on any smartphone — works smoothly in the browser without a special app.
24/7 Support
Live chat support in Bengali, around the clock. We are here for you whenever you need us.
Easy Payments
Deposit and withdraw in minutes via bKash, Nagad, and Rocket. No hidden charges.
Regular Bonuses
From welcome bonuses to weekly cashback — there is no shortage of bonuses.
Wide Betting Markets
Live and pre-match betting on cricket, football, kabaddi, and more.
Fair Play Guaranteed
All games run on verified RNG technology. Transparent and fair results, always.
Loyalty & Rewards Program
The more you play at 21tk, the more rewards you earn. Our three-tier VIP program makes every bet count. Your tier upgrades automatically as your play volume increases.
- Weekly cashback credited directly to your account
- More benefits and priority support at higher tiers
- Invitations to special tournaments and events
- Cashback is paid every Monday
Bronze
Entry level for new members. Play regularly to move up to the next tier quickly.
Silver
Mid level. Get priority access to double cashback and special offers.
Gold
Top level. Dedicated account manager and invitations to exclusive events.
Bankroll Management Guide
To enjoy online casino and betting responsibly, the first step is to set a clear budget. Only use money you can afford to lose without financial hardship. Never use borrowed money or funds meant for bills.
Divide your total budget into smaller session amounts. For example, if your monthly budget is ৳3,000, split it across 6 to 10 sessions. This way, a bad session will not wipe out your entire budget.
Experienced players generally do not spend more than 1% to 5% of their total bankroll on any single bet. For example, for a ৳1,000 bankroll, keep each bet between ৳10 and ৳50. This rule extends your playing time over the long run.
After a win, do not place bigger bets out of greed. Set a clear win limit, and once you reach it, end the session and withdraw your profit. Similarly, stop playing once you have lost a set amount — chasing losses by placing more bets is dangerous.
Keep a record of every session — when you played, how much you deposited, and how much you won or lost. This information will help you understand your own playing patterns and make better decisions in the future.
Key rules to remember
- Set your budget in advance
- Keep each bet at 1–5%
- Set a win limit
- Walk away when you lose
- Always keep track of your records
Real Experiences
Thousands of Bangladeshi players enjoy their favourite games on 21tk every day.
"I made my first deposit on 21tk with bKash, and the balance showed up within just a few minutes. I placed a bet on BPL and won. Withdrawal took less than an hour. A truly great experience."
"I'm having a lot of fun playing Gates of Olympus. Customer service speaks Bengali, which has made things much easier for me. Since becoming VIP Silver, I've been receiving weekly cashback."
"21tk is the best for playing Aviator. The interface works perfectly smooth on mobile. Depositing with Nagad gets instant credit. The bonus terms are clear and easy to understand."
Betting Glossary / Terms
Plain explanations of some common terms used in betting and casino games.
RTP (Return to Player)
The percentage of total bets that a game returns to players over the long run. For example, 96% RTP means an average of ৳96 is returned for every ৳100 wagered.
House Edge
The mathematical advantage a casino holds in every game. The lower the house edge, the better it is for the player.
Wager / Stake
The amount of money placed on a single bet. Wager and Stake are used interchangeably.
Odds
A numerical representation of the probability of an event occurring. The higher the odds, the greater the potential payout — but the lower the chance of winning.
Parlay / Accumulator
Combining multiple bets onto a single slip. If all bets are correct, you win big — but if any one is wrong, you lose everything.
Live Bet
Placing a bet in real time while a match is in progress. Odds change continuously and quick decisions are required.
Cashout
The option to exit a bet before the match ends. Even without a full win, you can secure a partial return.
Bankroll
The total amount of money set aside for playing. Healthy bankroll management ensures long-term enjoyment of gaming.
Volatility
Describes whether a game pays out frequent small wins (low volatility) or occasional large wins (high volatility).
Free Spin
The chance to spin the reels in a slot game at no cost. Usually given as a bonus — an opportunity to win without risking your own money.
Wagering Requirement
The condition specifying how many times bonus funds must be wagered before they can be withdrawn. At 21tk, this is 25 times (25x).
Spread
A bet on the point difference between two teams or outcomes. The margin of a team's win or loss also matters here.
Refer a Friend
Bring a friend to 21tk and both of you win special rewards.
Share your referral link
Get your personal referral link from your account and share it with friends or contacts.
Friend registers and deposits
Your friend registers using your link and makes their first deposit (minimum ৳500).
Both of you get rewarded
After your friend's first deposit, you will receive a ৳300 bonus, and your friend will also get a special welcome offer.
Referral Terms & Conditions
- Self-referral using multiple accounts of your own is not accepted
- Only one account per person is allowed
- The referred friend must be a new member
- Bonus funds are withdrawable after meeting the 25x wagering requirement
Your privacy matters to us
21tk keeps your personal information secure with SSL encryption. We never sell your data to third parties. To view our full privacy policy, click here.
Responsible Play
21tk believes that entertainment should always stay within limits. We place the highest importance on the wellbeing and financial safety of our players.
For those aged 21 and above only. Access to gaming sites by minors is strictly prohibited.
Session Limits
Decide for yourself how long you will play. Automatic break when the set time is up.
Deposit Limits
Set your own daily, weekly, or monthly deposit limits.
Self-Exclusion
If needed, temporarily suspend your account for a set period.
Help & Advice
If you are struggling with a gaming addiction, contact our support team. We are always ready to help.
Frequently Asked Questions
Here you will find answers to the most common questions players ask about 21tk.
Join 21tk today and get a
150% welcome bonus
Start with just ৳500 via bKash, Nagad, or Rocket. From your mobile, anytime, anywhere.