Every term on this page comes directly from the 87tk lobby, account area or sportsbook — so when you see a word on screen, you can check what it means here. We cover game mechanics, odds formats, wallet language and account conditions in plain English for Bangladesh.
Knowing what a word means changes how you read a game screen or a wallet notice. When you spot RTP on a slot page, or see rollover attached to a information condition, you will know exactly what action is required before funds move.
FOUR TERM FAMILIES
Where Each Term Family Appears in the Lobby
Terms cluster by where you encounter them. Knowing the family helps you find the right definition faster when a screen prompt appears during account use or gameplay.
Game Mechanics
Words like RTP, volatility, house edge and RNG appear on slot detail pages and live table information panels. Check the information icon next to any title in our lobby; where a provider exposes RTP, we display it there.
Odds and Markets
Asian handicap, over/under, decimal odds and match lines appear across Football Betblitz and Live Cricket Bet markets. The odds format selector in the sportsbook lets you switch between decimal and fractional display.
Wallet and Account
Deposit, withdrawal, e-wallet, KYC and rollover appear in your account wallet section and transaction history. When you move funds via bKash, Nagad or Rocket, the transaction record uses these labels directly.
Information Conditions
Turnover requirement, wagering contribution, qualifying bet and bonus balance are shown inside any active information detail. Read these before accepting; the conditions screen opens from the information notice in your account.
CORE GAME TERMS
Core Terms: Game Mechanics Defined
These six terms appear most often in slot and live dealer screens. Each definition is written in plain English without jargon so you can read it quickly on a mobile screen.
What is RTP?
RTP stands for Return to Player. It is the percentage of total wagers a game is designed to return over a very large number of rounds.
What is house edge?
House edge is the mathematical advantage the game holds over the player, expressed as a percentage. It is the inverse relationship to RTP.
What is volatility in a slot game?
Volatility describes how often a slot pays out and in what size. High volatility means fewer, larger wins. Low volatility means more frequent, smaller payouts. Medium sits between the two. A game's volatility level is shown in its lobby detail card where the provider includes that information.
What does wager or turnover mean?
Wager and turnover both refer to the total amount staked. In information terms, a turnover requirement tells you how many times a bonus balance must be staked before it converts to withdrawable funds. The number is stated in the information conditions screen inside your account.
What is a jackpot in slot terms?
A jackpot is the highest prize available within a slot's feature structure. Some slots carry a fixed jackpot amount; others carry a progressive amount that grows with play across many rounds. We do not publish jackpot amounts separately — check the individual game's paytable for its prize structure.
What is a live dealer?
A live dealer game streams a real human dealer running a physical table — cards, roulette wheel or dice — via video.
ODDS AND ACCOUNT TERMS
Odds, Payments and Account Language
These terms cover the sportsbook, wallet flow and account verification steps. Each one maps to a specific screen or prompt you encounter during normal account use.
What is Asian handicap?
Asian handicap is a betting market format that removes the draw outcome by giving one team a head start in goals or points. It splits the market into two possible results.
What does over/under mean in sports betting?
Over/under is a market where you predict whether a total — goals, runs, corners — will finish above or below a set line.
What is rollover in a information?
Rollover is the number of times you must stake a bonus or deposit amount before a withdrawal request is processed. A rollover of five means the qualifying amount must be wagered five times in total.
What is an e-wallet in the context of this account?
An e-wallet is a mobile-based payment service that holds funds digitally, separate from a bank account.
What is KYC?
KYC stands for Know Your Customer. It is an identity verification process where you submit documents confirming your name, address or payment ownership.
What are decimal odds?
Decimal odds show your total return per unit staked, including your original stake. Odds of 2.50 on a winning bet of 100 taka return 250 taka in total. You can switch odds display format in the sportsbook settings. Decimal is the default format across our sportsbook markets.
TERMS IN REAL DECISIONS
Seeing Multiple Terms Work Together on Screen
Reading isolated definitions is one thing; seeing how terms combine when you are actually browsing the lobby is more useful. Here is how several terms appear together in a single session flow without this being betting advice — it is purely a walkthrough of what you see on screen.
Asian Handicap + Decimal Odds
Inside Football Betblitz, these two appear side by side on any handicap market line. The handicap tells you the goal margin baked into the bet; the decimal odds tell you the return multiplier. Read both together before selecting a market.
RTP + Volatility on a Slot Card
Where a provider such as PG Soft exposes this data, both figures appear in the information panel of the game card. RTP sets the long-run return design; volatility tells you the payout rhythm. Neither figure predicts your next session result.
Rollover Counter in Account Wallet
After a qualifying deposit via bKash, the account wallet shows a bonus balance alongside a rollover progress bar if a information is active. The counter updates after each settled wager. The full information conditions are one tap away from that screen.
KYC Prompt Before Withdrawal
When you submit a withdrawal request above certain thresholds, the account screen surfaces a KYC prompt. This shows exactly which documents are needed. Completing it at that step unlocks the withdrawal flow; the fields and file upload are handled in the same screen.
GET TERM HELP
Ask About a Term You Are Not Sure About
If a definition here does not fully match what you see on screen — because lobby copy changes, or a provider uses slightly different wording — our support routes are open.
Live Chat
The live chat button appears in the bottom corner of the account screen once you are signed in. Use it to ask about a specific term, a wallet prompt or a information condition shown in your account. The conversation is linked to your session.
Email Support
For longer term queries — such as a detailed explanation of a rollover condition or a KYC document question — email support is listed in the Help section of your account. Include a screenshot of the prompt you are querying for a faster response.
Help Centre Articles
The Help section inside the account area contains published articles covering wallet terms, account verification steps and information conditions. These are updated when platform language changes, so they reflect the current wording you see on screen.
PLATFORM FEATURE QUESTIONS
Questions About Using These Features at 87tk
These questions go beyond definitions and cover how the features these terms describe actually work within the 87tk account — useful if you have already read the glossary and want to know what to do next.
Where do I check the RTP for a slot I want to play?
Open the game card in the lobby and tap the information icon. Where the provider has shared RTP data, we display it there. Not every studio publishes this figure, so some games will not show a number. We do not publish RTP separately from what the provider supplies.
How do I switch my sportsbook odds format from decimal to fractional?
Open the sportsbook section and find the odds format selector in the display settings, usually shown near the top of the market page. Select your preferred format and it applies across all markets in that session. The default format across 87tk sportsbook markets is decimal.
How does the rollover counter update after I place a bet?
The rollover counter in your account wallet updates once a wager is settled, not when it is placed. Only qualifying game types and markets contribute to rollover progress; the information conditions screen inside your account lists exactly which categories count toward the requirement.
Can I complete KYC verification before my first withdrawal?
Yes. You can submit your verification documents through account settings at any time after registration. Completing KYC early removes the prompt from the withdrawal flow so you are not waiting for document approval when you want to move funds out via Nagad, bKash or Rocket.
Does my bKash deposit count toward a turnover requirement?
Whether a deposit method affects turnover eligibility depends on the specific information conditions shown at the time you opt in.
What is the difference between my main balance and bonus balance in the wallet?
Your main balance holds funds from deposits and settled winnings that are available to stake or withdraw. Bonus balance holds any promotional credit, which is subject to the rollover and wagering conditions shown in the information detail. The two amounts are displayed separately in your account wallet screen.