[ 85 terms · 5 tracks · latest 2026-07-29 ]

Casino glossary, priced.

Every casino, slot, bonus, payment and compliance term you'll see on an operator T&C or a game screen — decoded into what it means, why the operator wrote it that way and which live ranking on this site prices it. No marketing gloss. Definitions cross-checked against operator T&C on every build.

85
terms
39
core (math + bonus)
5
tracks
2026-07-29
latest update

Mathematics & odds

[16] CLAIM → RTP guide

RTP, EV, volatility, house edge, Monte Carlo — the numbers every bonus and every ranking on the site is priced against. Read these first, everything else is context.

Bankroll
The total amount of money you have set aside for casino play.
math upd 2026-07-02
Basic strategy
The mathematically optimal play for every possible blackjack hand versus every dealer up-card. Reduces house edge from 2% to 0.5%.
math upd 2026-07-03
EV (Expected Value)
The average amount you win or lose per attempt over an infinite number of repetitions.
math upd 2026-07-02
EV-Positive
A wager or bonus where the mathematically expected outcome across all possible results is greater than the wager cost.
math upd 2026-07-04
Hit frequency
The percentage of spins that produce any payout, no matter how small.
math upd 2026-07-02
House edge
The percentage of each wager the casino expects to keep over the long run.
math upd 2026-07-02
Monte Carlo simulation
A statistical technique that estimates outcomes by running thousands of random trials of the same scenario.
math upd 2026-07-02
Provably fair
A cryptographic verification system used by crypto casinos to prove that game outcomes were not manipulated after your bet was placed.
math upd 2026-07-03
Return to Player
The theoretical long-run percentage of wagered money a slot returns to players. Displayed per game; audited by the provider.
math upd 2026-07-04
Risk of ruin
The probability that a bankroll drops to zero before hitting a target — the core survival metric for any staking plan.
math upd 2026-07-29
RNG (Random Number Generator)
The cryptographic algorithm that produces each slot spin's outcome.
math upd 2026-07-02
RTP (Return-to-Player)
The long-run average amount a slot pays back to players, as a percentage of total wagered.
math upd 2026-07-02
RTP Audit
Third-party verification that a slot or casino game's stated Return to Player matches the actual mathematical model.
math upd 2026-07-04
Stop-loss
A pre-set balance floor that ends a session before further losses accumulate — the discipline lever that keeps a bad session from becoming a broken bankroll.
math upd 2026-07-29
Turnover
The total amount you have wagered over a period, regardless of wins or losses.
math upd 2026-07-02
Volatility
The standard deviation of per-spin outcomes; how much bankroll swings during a session.
math upd 2026-07-02

Bonuses & offers

[23] CLAIM → Bonuses hub

Wagering multipliers, max-cashout caps, sticky vs non-sticky, wager-free — the vocabulary the T&C hide the actual EV behind. The clearing math lives here.

Bonus Code
An alphanumeric string a player enters at deposit or registration to activate a specific bonus offer.
bonus upd 2026-07-04
Bonus expiry
The time window in which you must complete a bonus's wagering requirement.
bonus upd 2026-07-02
Cashback
A refund of a percentage of net losses over a period, credited to the account.
bonus upd 2026-07-02
Free spins
Complimentary slot spins with a fixed bet size, awarded as a bonus.
bonus upd 2026-07-02
Freeroll
A tournament with no entry fee that pays real-money prizes. Common at poker rooms, occasional at slot casinos.
bonus upd 2026-07-04
Game contribution
The percentage of each wager on a given game category that counts toward a wagering requirement.
bonus upd 2026-07-02
Match bonus
A bonus that matches a percentage of your deposit — the most common welcome offer structure.
bonus upd 2026-07-03
Max bet
The largest bet you're allowed to place per spin while wagering a bonus.
bonus upd 2026-07-02
Max cashout
The maximum amount you can withdraw from bonus winnings.
bonus upd 2026-07-02
No Wagering
A bonus where winnings are immediately withdrawable — no wagering multiplier must be cleared first. The rarest and most valuable bonus format.
bonus upd 2026-07-04
No-deposit bonus
A bonus granted on registration or verification without requiring a deposit.
bonus upd 2026-07-02
Rakeback
A rebate of a portion of the rake (or house margin) you generated over a period, credited back to your account.
bonus upd 2026-07-03
Reload bonus
A deposit-match bonus offered to existing customers on subsequent deposits.
bonus upd 2026-07-02
Slot tournament
A time-limited leaderboard competition where players compete on wagering volume, biggest single win, or best win multiplier.
bonus upd 2026-07-03
Sticky bonus
A bonus that cannot be withdrawn under any circumstances, only its winnings can.
bonus upd 2026-07-02
Sticky vs non-sticky bonus
The single biggest T&C distinction for bonus EV — whether the bonus amount itself can be withdrawn or not.
bonus upd 2026-07-03
VIP Host
A dedicated account contact at high-tier VIP casino programs who handles bespoke bonuses, faster withdrawals, and higher limits.
bonus upd 2026-07-04
VIP program
A tiered rewards system that gives back a percentage of your wagering as free money, cashback, or perks.
bonus upd 2026-07-03
Wager-free bonus
A bonus with no wagering requirement attached. Immediately withdrawable. Rare on welcome offers; common on cashback and free spins.
bonus upd 2026-07-03
Wagering requirement
The total amount you must bet before a bonus (and its winnings) become withdrawable.
bonus upd 2026-07-02
Wagering Scope
Whether a bonus wagering multiplier applies to the bonus amount only (B) or to the deposit plus bonus (D+B) — the difference doubles the required turnover.
bonus upd 2026-07-04
Welcome bonus
The bonus offered on a new player's first deposit or first few deposits.
bonus upd 2026-07-02
Welcome Package
A welcome offer spread across a player's first 2-5 deposits, each with its own match ratio, cap, and often wagering multiplier.
bonus upd 2026-07-04

Gameplay & mechanics

[27] NEUTRAL → Mechanics hub

Megaways, hold-and-spin, cluster pays, buy-features — the on-screen mechanics that produce the RTP the math lives in. Useful when a slot page or bonus wagering-scope T&C references them.

Autoplay
A feature that runs many slot spins automatically at a fixed bet, with optional stop-loss and stop-win controls.
gameplay upd 2026-07-03
Baccarat
A high-stakes card game where you bet on Player, Banker or Tie. Simplest strategy in the casino — always bet Banker.
gameplay upd 2026-07-03
Blackjack
A card game where you aim to beat the dealer's hand without exceeding 21. Highest table-game RTP in the casino at basic strategy.
gameplay upd 2026-07-03
Bonus Buy
A slot mechanic that lets you pay a fixed multiple of stake to trigger the bonus round immediately, skipping the base game.
gameplay upd 2026-07-04
Bonus round
An in-slot mini-game that pays out separately from the base game, typically triggered by scatters.
gameplay upd 2026-07-02
Buy feature
A paid shortcut to trigger a slot's bonus round without waiting for the natural trigger.
gameplay upd 2026-07-02
Cascading Reels
A slot mechanic where winning symbols disappear and new symbols drop into the empty positions from above, potentially triggering chain wins.
gameplay upd 2026-07-04
Cluster Pays
A payline-free slot mechanic where wins are triggered by clusters of 5+ adjacent matching symbols on a grid.
gameplay upd 2026-07-04
Craps
A dice game with the widest range of bets in the casino. Some bets are excellent (Pass Line, Come); most are terrible.
gameplay upd 2026-07-03
Crash game
A game where a multiplier starts at 1× and grows until it "crashes" randomly. Cash out before the crash to win your bet × the multiplier.
gameplay upd 2026-07-03
High roller
A player who consistently wagers at levels far above the typical player — usually with dedicated bonuses, higher max bets, and a personal casino host.
gameplay upd 2026-07-03
Hold-and-Spin
A bonus feature where landing 6+ special cash-value symbols triggers a respin round that continues until the counter runs out.
gameplay upd 2026-07-04
Jackpot
A top-prize payout, either fixed at a set amount or growing progressively across a network of games.
gameplay upd 2026-07-02
Keno
A lottery-style casino game where you pick numbers and win based on how many match a randomly drawn set. High house edge, best treated as recreation.
gameplay upd 2026-07-03
Live dealer
Real croupiers dealing cards or spinning wheels, streamed to your device. Studio-based tables run 24/7 across most operators.
gameplay upd 2026-07-03
Megaways
A slot mechanic patented by Big Time Gaming where each spin produces a random number of symbols per reel, generating up to 117,649 ways to win.
gameplay upd 2026-07-02
Online bingo
A social lottery-style casino game where you cross off numbers on a card as they're called. Community aspect drives retention; RTP varies wildly by variant.
gameplay upd 2026-07-03
Pay Table
The list of symbol combinations a slot pays out on, with each combination's payout value expressed as a multiple of the base bet.
gameplay upd 2026-07-04
Paylines
The pre-defined patterns of positions across reels that trigger a payout when matched symbols land on them.
gameplay upd 2026-07-02
Progressive slot
A slot where a portion of every bet across a network of games feeds a jackpot pool that grows until someone wins it.
gameplay upd 2026-07-03
Reels
The vertical strips of symbols that spin on a slot machine.
gameplay upd 2026-07-02
Roulette
A wheel-and-ball game with the second-lowest house edge at the casino — provided you play the European or French variant, not American.
gameplay upd 2026-07-03
Scatter symbol
A special slot symbol that pays regardless of paylines and typically triggers bonus features.
gameplay upd 2026-07-02
Slot features
The mechanics beyond base-game spins — buy features, sticky wilds, cascading reels, mystery symbols. Concentrated where a slot's RTP lives.
gameplay upd 2026-07-03
Video poker
A machine-based poker game with published RTPs above 99% when played optimally. One of the best-EV games in the casino.
gameplay upd 2026-07-03
Ways-to-Win
A payline-free 5-reel slot format where any three matching symbols left-to-right pay, regardless of vertical position — typically 243 to 4,096 ways.
gameplay upd 2026-07-04
Wild symbol
A slot symbol that substitutes for other symbols to complete winning combinations.
gameplay upd 2026-07-02
[ apply the terms ]

Glossary · FAQ

How is a glossary different from a guide?

A glossary entry is a one-page definition of a single term — what it means, why it appears in T&C or on a slot page, and which live ranking on CasiMath uses it. Guides walk end-to-end through a topic (RTP, wagering, bankroll) and use several glossary terms per page. Read a term when you hit unfamiliar vocabulary; read a guide when you want the whole operating model.

Which terms should I read first?

If bonuses are your entry point, start with wagering requirement, max cashout, game contribution, and sticky bonus — those four decide the EV of every offer. For slots, start with RTP, volatility and hit frequency. For payouts, start with withdrawal cap and KYC.

Are these definitions industry-standard or house-defined?

We use the industry-standard definition wherever one exists (RTP, EV, KYC, AML — all consistent across regulators). Where operators use the same word for different things — "welcome bonus" sometimes means match, sometimes package, sometimes cashback — we say so and split into separate entries. Every definition is checked against at least three live operator T&C during the September 2026 rebuild.

How often does the glossary update?

Every build. New terms are added when they appear in enough operator T&C to be worth naming — recent additions include stablecoin (crypto rail switch), affordability check (UK regulatory push) and wager-free bonus (Nordic norm going global). Existing terms get re-checked whenever a guide that uses them ships. Latest update tracked here is 2026-07-29.

Can I link a term into my own site or article?

Yes — every term has a stable URL (/glossary/<slug>) and is safe to hotlink. Editorial-attribution links are welcomed; we do not ask for reciprocal follow tags. If you find a definition that has drifted from current operator practice, use the footer contact link.

Where do the cross-linked rankings come from?

Each glossary term links out to the /bonuses, /casinos, /slots, /payments or /country ranking where the concept it defines is priced against live operator data. The link target is the ranking that answers "so how does this look in the current market?" once you understand the definition.

18+. Definitions are editorial content, not legal or financial advice. If a term appears in an operator T&C in a way that differs from the definition here, the operator's wording governs the bonus — read the T&C.