Download the official 3999db app and enjoy bingo, slots, casino, fish games, and Sports Betting – all in one place. As long as you have internet, you can play anytime, anywhere.
Works on any smartphone running Android 6.0 or higher. Install the APK file directly.
Runs great on iPhone and iPad. Installs easily on any device running iOS 13.0 or higher.
Many users have questions about downloading the 3999db app – how to install it, whether it's safe, and how it compares to the browser version. This page covers all of that in detail. In short, tens of thousands of users in Bangladesh use the 3999db app safely every day.
There's a big difference between playing through a mobile browser and playing through an app. The app gives you notifications, faster loading, and push alerts so you never miss a bonus offer. The 3999db app is specially optimized for mobile screens — larger buttons, smooth scrolling, and no lag during gameplay.
Click the "Android Download" button on this page. The APK file will be saved to your phone's Downloads folder.
Enable Settings → Security → Unknown Sources to allow installation of third-party APKs.
Tap the 3999db.apk file in your Downloads folder. When prompted for permission, tap "Install".
Once installation is complete, the 3999db icon will appear on your home screen. Tap it to open the app and access your account.
Once logged in, you'll land straight on the dashboard. Pick Bingo, slots, or any game you like and start playing.
Click the "iOS Download" button on this page. An installation page will open in Safari.
Go to Settings → General → VPN & Device Management and trust the 3999db profile.
The 3999db icon will be added to your device's home screen. Tap it to open the app.
Log in with your 3999db account username and password and start playing.
Open Chrome, Firefox, or Safari and go to 3999db.win.
If you're new, register for an account. If you already have one, go ahead and log in.
Select "Add to Home Screen" from your browser menu and the web app will work just like a native app.
The 3999db app is lightweight and fully optimized. Games run smoothly even on weak networks, with virtually no loading spinners.
Bonus offers, cashback, special events, or deposit confirmations — all updates will be delivered straight to your phone.
Your account and funds are protected with SSL encryption and two-factor verification. Mobile Banking and Nagad payments are fully secure.
Use Dark Mode while playing at night for a more comfortable experience. Switch modes with just one tap from within the app.
The entire app interface is in Bangla — menus, buttons, and the help section, all in your native language so you can read and navigate with ease.
Deposits and withdrawals via Mobile Banking, Nagad, or Rocket are completed in just a few seconds – no lengthy process.
| Subject | Android | IOS |
|---|---|---|
| Minimum OS | Android 6.0+ | IOS 13.0+ |
| File Size | 45 MB | 52 MB |
| Latest Version | 3.8.2 | 3.8.1 |
| Updated on | June 2026 | June 2026 |
| Language | Bangla, English | Bangla, English |
| Payment Support | Mobile Banking, Nagad, Rocket | Mobile Banking, Nagad, Rocket |
| Minimum RAM | 2 GB | 2 GB |
| Rating | 4.7 / 5 | 4.6 / 5 |
Online gaming platforms in Bangladesh are growing in number, but not all of them are equal. Many apps aren't available in Bangla, some take too long to load, and others run into issues during payments. 3999db has solved all three of these problems.
First, the entire app is built in Bangla — from the game lobby to the payment page and Help Center, everything is in your native language. This makes it easy to use even for those who aren't very tech-savvy.
Second, because 3999db's servers are located close to Bangladesh, load times are significantly reduced. Slot games and Live Casino run reasonably well even on a 3G connection. With high-speed Wi-Fi, the experience is even smoother.
Third, the payment system is completely reliable. After sending money via Mobile Banking or Nagad, funds are typically added to your wallet within 1–2 minutes. Withdrawals are just as fast – usually taking 5–15 minutes.
Seeing an "Install Blocked" message? This happens when Unknown Sources or Install Unknown Apps is not enabled in your Android Settings → Security. Allow your browser app to install from unknown sources to fix this.
Download stopping halfway? Check your internet connection. If Data Saver mode is on, turn it off and try again. Switch to Wi-Fi if available.
App not opening or crashing? Restart your phone, then uninstall and reinstall the app. If your phone is low on storage, free up some space by deleting unnecessary files.
Seeing "Untrusted Developer" on iOS? Go to Settings → General → VPN & Device Management, find the 3999db profile, and tap Trust. The app will then run normally.
Having trouble logging in? If you've forgotten your password, use the "Forgot Password" option on the login page. If you don't have an account yet, go to the registration page to create one.
Millions of players use the 3999db app every day to play games and win rewards. Come join them.
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