Download the official b3999 app and play Live Casino, slots, and fish games from any device. Fast, secure, and fully in Bangla.
Choose Your Platform
The b3999 app is available on Android, iOS, and Windows. Download links for your preferred device are listed below.
Why the b3999 app?
Smartphone usage in Bangladesh is growing every day, and b3999 has built a lightweight, fast mobile app to match that reality. Once downloaded, you won't need to open a browser and log in every time — just one tap and you're straight into your favorite games.
The app is designed to run smoothly on 4G or even 3G networks. From Live Casino streaming to slots and fish games, everything is neatly laid out on a mobile screen. The buttons are large and clear, so tapping them is never a hassle.
When you log in to the b3999 app, your wallet balance, active bonuses, and transaction history are all in one place. You can also deposit and withdraw via bKash, Nagad, or Rocket directly within the app — no need to open a separate browser.
Security is another area where the b3999 app truly excels. Every connection is protected with SSL encryption, and two-factor authentication keeps your account safe from unauthorized access.
Technical Specifications
Your device just needs to meet the following requirements to run the b3999 app.
| OS Version | Android 6.0 or above |
| RAM | Minimum 2 GB |
| Storage | 50 MB Free Space |
| Internet | 3G / 4G / Wi-Fi |
| Processor | Quad-core 1.4GHz+ |
| OS Version | IOS 12.0 or above |
| Device | IPhone 7+ / iPad Air 2+ |
| Storage | 45 MB Free Space |
| Internet | 4G / LTE / Wi-Fi |
| Chipset | Apple A9 or above |
| OS | Windows 8 / 10 / 11 |
| RAM | Minimum 4 GB |
| Storage | 100 MB Free Space |
| Internet | Broadband / Wi-Fi |
| Browser | Chrome / Firefox / Edge |
Installation Guide
Go to Settings → Security → Unknown Sources and enable it. You only need to do this once.
Tap the Android download button above. The file will be saved to your Downloads folder.
Once the download is complete, tap the notification or open your file manager and launch b3999.apk.
Tap "Install" in the popup window. Installation completes in just 30–60 seconds.
Open the app and log in with your b3999 ID and password. If you're new, register first.
App Features
Enjoy Live Casino games in HD-quality video. Adaptive bitrate technology keeps buffering to a minimum even on a weak network connection.
Updates on new bonuses, tournaments, and special offers will be sent straight to your phone. Never miss an opportunity.
Log in with your fingerprint or Face ID in just one second — no need to remember any passwords.
BKash, Nagad, and Rocket are all accessible directly within the app. Both deposits and withdrawals are completed within minutes.
The entire app is built in dark theme for late-night sessions. Easier on your eyes and gentler on your battery.
Live chat support in Bangla is available right inside the app — 24/7, 7 days a week.
Compatibility
The b3999 app runs smoothly on almost all popular smartphones. It has been tested and optimized specifically for Samsung, Walton, Symphony, Xiaomi, Oppo, and Realme devices.
Good news for users on older phones — enabling the app's lightweight mode lets it run smoothly on devices with as little as 1.5 GB RAM. Just make sure you're on Android 6.0 or above.
Learn More
Many users ask — if everything works in the browser, why bother downloading a separate app? The answer is speed. Browser pages take time to load each visit, but the app opens everything instantly thanks to cached memory.
Using the app also gives you access to exclusive app-only bonuses that are not available to browser users. b3999 regularly offers special cashback and loyalty points for mobile users.
Never miss a tournament or bonus offer with push notifications keeping you in the loop. You can also filter the game list directly from the app, save your favorites, and track your game history.
Update Info
The b3999 app is for users aged 18 and above only. Use it for gaming entertainment and always play within your budget.
Read the Responsible Gaming PolicyFrequently Asked Questions
Get started now — don't wait
Download the b3999 app today and get a 100% Welcome Bonus on your first deposit. Welcome to the platform trusted by millions of players across Bangladesh.