Live / Sports
From RTP on slot reels to rollover on wallet conditions, this glossary covers the language you see across ok15 — game mechanics, odds formats, account steps and payment labels. Know what each term means before you make a decision in the lobby.
Picking a game or reading a market line is easier when the labels make sense. Volatility tells you how a slot pays across a session.
Different screens use different vocabulary. Here is where each family of terms shows up so you know which section of the lobby each definition belongs to.
RTP, volatility, house edge, RNG and payline count appear on slot and table-game screens. Some providers show these inside the game info panel; others display them only on their own published documentation. Check the info icon inside each game room.
Asian handicap, over/under, decimal odds and spread are sportsbook terms. You will see them on the bet slip when browsing cricket markets — IPL and BPL matches are where these formats come up most often on ok15.
Deposit, withdrawal, e-wallet, Bank Transfer and KYC appear in the account section. When you add a bKash or Nagad number, the wallet screen labels each step using these terms. Your transaction history uses the same language.
Rollover, wager requirement, turnover and qualifying bet are the terms attached to any information. These show in the offer's own conditions panel. Read them before you opt in so you know what account activity counts toward completion.
These are the terms you will see most often when browsing slot rooms, live tables and the crash-game lobby on ok15.
RTP stands for Return to Player. It is a percentage that describes how much of total wagers a game returns to players over many rounds, calculated across millions of spins or hands.
House edge is the mathematical advantage a game holds over the player across all rounds.
Volatility describes how a slot distributes its payouts. High volatility means wins arrive less often but tend to be larger when they do. Low volatility means smaller, more frequent returns. Crash Rush and slot-style games often note their volatility in the provider's published game sheet.
A wager or turnover requirement is a multiplier applied to a wallet credit or offer amount.
A jackpot in slot terms is a prize-ceiling feature built into certain game titles, where a qualifying combination or in-game trigger awards the maximum prize pool. Not all slots carry a jackpot mechanic; the game info panel confirms whether the title includes one.
A live dealer is a real person dealing cards or spinning a wheel from a studio, streamed to your screen in real time. At ok15, live dealer tables — including Baccarat Live Table and Roulette FastLane — run through studio streams supplied by the site's game content partners.
These terms come up in the sportsbook, your wallet section and the account verification flow — all separate from the game mechanics covered above.
Asian handicap is a betting market format used widely in cricket and football. It eliminates the draw outcome by giving one side a virtual head start or deficit.
Over/under is a market where you bet on whether a measurable outcome — total runs in a cricket innings, for example — will be above or below a line set by the sportsbook. The line and both sides appear on the Football Quickstrike and Cricket Sportbook bet slips.
Rollover is another word for a wager or turnover requirement applied to a credited amount. You must place bets totalling the rollover value before the credited funds qualify for withdrawal. The conditions panel for each offer states the rollover multiplier and which game categories count.
An e-wallet is a mobile-linked payment account used to move funds without a physical bank card. At ok15, bKash and Nagad function as e-wallets — you connect your registered mobile number, and the deposit or withdrawal routes through that wallet account directly from your phone.
KYC stands for Know Your Customer. It refers to the identity verification steps a platform asks you to complete — typically submitting a valid ID document — before processing certain withdrawals or unlocking higher account limits. The account section shows which steps are outstanding on your profile.
Decimal odds express the total payout per unit staked, including the original stake. Odds of 2.50 return 2.50 units for every 1 unit bet. Most Bangladesh sportsbook markets on ok15 default to decimal format, though you can check the bet-slip settings for display preferences available on your account.
Glossary definitions are most useful when you can map them to a screen you actually open. Consider how this works across a typical session.
Open the info icon inside Crash Rush to see the RTP figure the provider has published. Not all crash-format games expose this; if the panel is absent, the figure is not available for that title at the time you are playing.
The Roulette FastLane table rules tab shows the house edge per bet type. European-format layouts carry a lower house edge than American-format ones; the table rules confirm which format is running on the specific version you have opened.
When you add funds through Nagad, the wallet history logs the transaction as a deposit with the amount, date and status. The label uses the same vocabulary as this glossary, so the status field reads exactly as defined here — pending, confirmed or failed.
On the Cricket Sportbook bet slip, decimal odds and Asian handicap values appear next to each selection. The combined payout estimate updates as you add legs, using the decimal format — total return equals odds multiplied by your stake amount.
If a term on the game screen, bet slip or wallet section does not match what you expected from this glossary, the quickest path is to ask directly. Our support routes are open and visible from the account menu on both mobile and desktop.
The live chat icon appears at the bottom of every lobby page on ok15. Tap it, type your question about a specific term or screen label, and a support agent responds in the chat thread. No need to leave the game lobby to get clarification.
For longer questions — such as a detailed explanation of how rollover applies to your current offer, or a KYC step you are unsure about — email support is available through the contact address listed in your account settings under the Help section.
The Help section inside your signed-in account covers wallet terminology, verification steps and offer conditions in plain language. It is the right place to check bKash or Nagad transaction labels, withdrawal status definitions and account-limit terminology before contacting support.
These questions cover how the platform actually uses the terms from this glossary — not the definitions themselves, but the features and flows they describe.
Tap the info or rules icon inside the game window. If the provider has published an RTP figure, it appears there. RTP is only shown where the game or provider exposes it — ok15 does not display figures that have not been supplied by the studio directly.
Open the offer details from your account's information section. The conditions panel lists the rollover multiplier, the qualifying game categories and the time window. For any term in that panel you are unsure of, this glossary or live chat can clarify it quickly.
Your wallet history labels each transaction as pending, confirmed or failed. Pending means the transfer is still being processed between your mobile wallet and your ok15 account.
The account settings page shows which verification steps are outstanding on your profile. Required document types and upload instructions appear there. Complete the steps shown before attempting a withdrawal that requires identity confirmation, as the system checks status before releasing funds.
The handicap value shown next to a selection adjusts the margin of the result you are betting on. A positive handicap gives the underdog a virtual advantage; a negative one removes runs or goals
Check the sportsbook settings or your account preferences panel for display options available on your profile. Decimal format is the standard across ok15 markets. If alternative formats are available, the toggle appears in the bet-slip or odds-display settings area of your signed-in account.