399b started with a straightforward idea: Bangladeshi players deserve an online gaming platform that actually works for them — fast deposits, instant withdrawals in BDT, games that run smoothly on mobile, and support that responds when you need it. That idea became 399b, and everything we've built since has stayed true to it.
399b is an online gaming platform built specifically for players in Bangladesh. We launched because we saw a real gap in the market — there were plenty of international gaming sites available, but almost none of them were designed with Bangladeshi players in mind. Currency conversion was a hassle, payment methods didn't match what people actually use here, mobile performance was inconsistent, and customer support was often unavailable during hours when Bangladeshi players were most active.
399b was built to fix all of that. From day one, we focused on making the platform work the way Bangladeshi players need it to work. Deposits and withdrawals run through bKash, Nagad, and Rocket — the payment methods that are already part of daily life here. All balances and transactions are handled in BDT with no hidden conversion fees. The mobile interface was designed first, not adapted from a desktop version as an afterthought.
Over the years, 399b has grown into one of the most recognised gaming platforms in Bangladesh. We've expanded our game library, improved our payout speeds, and built a support team that genuinely understands the needs of our players. But the core of what 399b is hasn't changed — a platform that puts Bangladeshi players first, every single day.
399b goes live with a focused game library and bKash integration — the first online gaming platform in Bangladesh built around local payment infrastructure from the ground up.
The 399b mobile app launches for Android and iOS, bringing the full platform experience to players' phones. Within six months, over 70% of 399b sessions are happening on mobile.
399b expands its game library with live dealer casino tables and card games including Tongits Go — bringing real-time multiplayer competition to Bangladeshi players for the first time on the platform.
399b adds Nagad and Rocket as deposit and withdrawal options, completing the coverage of Bangladesh's three major mobile financial services and making the platform accessible to even more players.
399b reaches the milestone of 500,000 registered players — a reflection of the trust Bangladeshi players have placed in the platform and the team behind it.
399b continues expanding its game catalogue, improving payout speeds, and investing in platform security — staying focused on the same mission that started everything: the best online gaming experience for Bangladesh.
Six things that set 399b apart from every other online gaming platform available in Bangladesh.
399b was designed for mobile from the very beginning. Every game, every menu, every transaction flow was built to work perfectly on a phone screen. You don't need a laptop or desktop to get the full 399b experience — your phone is all you need, whether you're at home or on the go.
Withdrawals on 399b go directly to your bKash, Nagad, or Rocket account in Bangladeshi Taka. There are no currency conversions, no third-party processors, and no unexplained delays. Most withdrawals on 399b clear within five minutes during normal operating hours — because waiting days for your own money makes no sense.
Every game on 399b runs on a certified random number generation system. No outcome is predetermined, no result is influenced by the platform, and no player has an advantage over another based on anything other than skill and luck. 399b's fairness certification covers all game formats — slots, card games, fishing games, and live casino tables.
399b's support team is available around the clock via live chat. The team understands the specific needs of Bangladeshi players — payment questions, account issues, game queries — and responds in plain, clear language without making you feel like you're reading a script. Support is one of the things 399b players consistently mention as a reason they stay on the platform.
399b uses 256-bit SSL encryption across the entire platform — the same standard used by major banks. Your personal information, payment details, and account data are protected at every point. Two-factor authentication is available for all accounts, and 399b's security team monitors the platform continuously for any unusual activity.
399b runs a continuous programme of bonuses and promotions — not just a welcome offer that disappears after your first deposit. Weekly reload bonuses, daily cashback, tournament prize pools, and seasonal promotions give active 399b players consistent extra value. All bonus terms are clearly stated with no hidden conditions buried in fine print.
The mission at 399b has always been simple: give Bangladeshi players the best online gaming experience available anywhere. Not the best experience available in Bangladesh — the best experience available, full stop. That means holding ourselves to the same standards as the top international platforms while staying rooted in what actually works for players here.
We believe that trust is earned through consistency. Every time a 399b player makes a deposit and it lands instantly, every time a withdrawal clears in minutes, every time a support query gets a real answer — that's 399b delivering on its promise. We don't think of these things as features. We think of them as the minimum standard we owe to every player who chooses 399b.
Responsible gaming is also a core part of how 399b operates. We provide tools that let players set their own deposit limits, session time reminders, and self-exclusion options. Gaming should be enjoyable — and 399b is committed to making sure it stays that way for everyone on the platform.
Responsible Gaming PolicyEvery fee, every bonus term, every payout rule on 399b is stated clearly. We don't hide conditions in fine print or change terms without notice. What you see is what you get.
Certified RNG systems, independent audits, and a zero-tolerance policy on any form of manipulation. Every player on 399b competes on a level playing field, every single round.
Instant deposits, fast withdrawals, and a platform that loads quickly even on slower mobile connections. 399b respects your time — we don't make you wait for things that should be immediate.
Every decision at 399b is evaluated against one question: is this good for our players? If the answer is no, we don't do it. That principle has guided every feature, policy, and update since day one.
399b is run by a team of gaming, technology, and finance professionals who understand what Bangladeshi players need.
Over 12 years in online gaming and fintech across South and Southeast Asia. Rafiq founded 399b with the conviction that Bangladesh deserved a platform built specifically for its players.
Nadia leads the 399b product team, overseeing the mobile app, game lobby, and player experience. Her background is in UX design for mobile-first financial products across emerging markets.
Tanvir manages 399b's security infrastructure, including SSL implementation, fraud detection, and account protection systems. He previously worked in cybersecurity for a major Bangladeshi bank.
Sumaiya built and leads the 399b support team from the ground up. Her focus is on response quality and resolution speed — the two things that matter most when a player needs help.
399b takes the safety and wellbeing of every player seriously — here's how we back that up.
399b provides a full set of responsible gaming tools that every player can access from their account settings at any time. These include deposit limits, session time reminders, cooling-off periods, and self-exclusion options. We also have a dedicated responsible gaming page with resources for players who feel their gaming habits may be becoming a concern.
Gaming on 399b should always be entertainment. If it stops feeling that way, our tools and support team are here to help you take control.
View Responsible Gaming Page399b operates under a clear set of terms and policies that govern how the platform works, how player data is handled, and what players can expect from us. All policies are written in plain language — not legal jargon designed to confuse — and are available in full on the site.