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Every Key Term in the 99db Lobby, Explained

Whether you're reading a slot paytable, checking a sportsbook line, or verifying your account, the right vocabulary makes every step faster.

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99db Every Key Term in the 99db Lobby, Explained
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Ask Us When a Term Is Unclear

If a term in the lobby, paytable, or account page isn't covered here, our support team can clarify it. Reach out through any of the channels below.

Live Chat Open the chat widget from any page in the lobby. Our team responds in English and can walk you through any term or account step you're unsure about.
Email Support Send a message to our support address for detailed questions about game rules, withdrawal verification, or your bKash, Nagad, or Rocket transaction history.
Account Help Centre The Easy Support Center inside your account lists common term queries, deposit steps, and KYC document requirements in one place — check there first for quick answers.
99db Know the Language, Play with Confidence

Know the Language, Play with Confidence

Knowing what RTP, volatility, and rollover actually mean changes how you pick games and manage your wallet. A slot with high volatility pays less often but in larger amounts — that's a different experience from a low-volatility title that pays small amounts frequently. On the sportsbook side, understanding Asian handicap or over/under lines helps you read a cricket or football market clearly

before you place anything. When you top up via bKash, Nagad, or Rocket, terms like e-wallet, turnover, and KYC come up in your account flow. We've written every definition here in plain language so you can move through the lobby and your account settings without stopping to search.

Explore the Basics: Game Mechanics Defined

These are the terms that appear most often in slot descriptions, live table rules, and game paytables across the lobby.

RTP stands for Return to Player — the percentage of total bets a game returns to players over many rounds. It is shown only where the game provider publishes it.

House edge is the mathematical advantage the platform holds on each game. A 2% house edge means the platform retains roughly 2 units for every 100 wagered over time.

Volatility describes how often and how much a slot pays. High volatility means fewer wins but larger amounts; low volatility means more frequent wins at smaller values.

A wager or turnover requirement is the total amount you must bet before a bonus balance becomes withdrawable. For example, a 10x turnover on 500 means betting 5,000 total.

A jackpot is the highest prize available in a slot game. Progressive jackpots grow with each bet placed; fixed jackpots pay a set amount defined in the paytable.

A live dealer is a real person dealing cards or spinning a wheel in a studio, streamed to your screen in real time. Evolution and Pragmatic Play run most live dealer tables.

Switch to Odds, Payments and Account Terms

These terms come up in the sportsbook, your wallet, and the account verification flow — worth knowing before you place a bet or request a withdrawal.

Asian handicap removes the draw outcome by giving one team a head start in goals or runs. It is common in cricket and football markets and reduces the bet to two possible results.

Over/under is a bet on whether a combined score or stat — runs in a cricket match, for example — will finish above or below a number set by the sportsbook.

Rollover is another word for turnover requirement. It specifies how many times a deposit or bonus amount must be wagered before a withdrawal request can be processed.

An e-wallet is a mobile money account used to deposit and withdraw funds. On 99db, supported e-wallets for Bangladesh include bKash, Nagad, and Rocket.

KYC stands for Know Your Customer — the identity verification process. You submit a valid ID document so the platform can confirm your account before processing withdrawals.

Account limits are controls you set in your account settings to manage how much you deposit or wager within a chosen period. They apply to your account wallet directly.

Browse Common Questions About the Lobby and Account

These questions go beyond definitions — they cover how these terms show up when you actually use the platform.

RTP is shown inside the game info panel when the provider publishes it. Open the slot, tap the info icon, and look for the RTP or payout percentage field in the paytable section.

Go to your account settings, upload a clear photo of your national ID, and submit. Once verified, your bKash withdrawal request moves to the processing queue without further document checks.

Open the promotions section in your account wallet. Your active turnover requirement and progress are displayed there so you can see exactly how much wagering remains before withdrawal.

Yes. Open the sportsbook, select cricket, and find the BPL fixture. Asian handicap lines appear alongside standard match-winner markets when the provider makes them available for that match.

If your Nagad transfer doesn't reflect in your account wallet within the expected window, contact live chat with your transaction reference number and we'll trace it from our end.

It can. High-volatility games like Crash Fast Lift or Gates of Olympus can go many rounds without a significant payout, so a larger session balance helps you stay in the game longer.
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99Db Glossary

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