Casino glossary
Twenty-six terms that decide whether a crypto casino is worth your deposit — defined in plain English, with the real numbers behind them. Every definition is consistent with the data in our casino rankings and reviews.
RTP (return to player)
The percentage of all wagers a game returns to players long-run — a 96% RTP slot pays back $96 per $100 wagered.
Read definition →House edge
The casino's built-in margin on every bet: 100% minus RTP. Stake's crash runs 1%; blackjack as low as 0.5%.
Read definition →Wagering requirement
The multiplier of bonus value you must bet before withdrawing — 40x on a $100 bonus means $4,000 in wagers.
Read definition →Rakeback
A rebate of the house edge paid on every bet, win or lose, with no wagering requirement attached.
Read definition →Server seed
The casino's secret random string in provably fair games, committed by SHA-256 hash before you bet.
Read definition →Nonce
The counter that rises by one each bet so every result under the same seed pair is unique and verifiable.
Read definition →Provably fair
The cryptographic system that lets you recalculate any game result yourself and prove it was never manipulated.
Read definition →Max bet rule
The bonus term capping single bets (usually $5) while wagering — exceed it and winnings can be voided.
Read definition →Sticky bonus
Bonus money you can play with but never withdraw; only winnings above it are cashable.
Read definition →Slot volatility
How a slot delivers its RTP: frequent small wins (low) or rare big hits (high) at the same long-run return.
Read definition →KYC
Identity verification with photo ID and proof of address — at crypto casinos usually triggered by withdrawals.
Read definition →Cashout
Withdrawing winnings to your own wallet — or the crash-game button that locks in your current multiplier.
Read definition →No-wagering bonus
Winnings paid as withdrawable cash with zero playthrough; small, but positive expected value.
Read definition →Game weighting
The % of each bet that counts toward wagering: slots 100%, blackjack 10%, originals often 0%.
Read definition →Max cashout
The ceiling on withdrawable bonus winnings; everything above the cap is forfeited.
Read definition →Withdrawal limit
Per-transaction, daily, weekly and monthly caps that schedule how fast a big win leaves.
Read definition →Instant withdrawal
Automatic approval with no human review; what pushes a payout into the manual queue instead.
Read definition →Same-day withdrawal
Approval within the day requested, usually under 24h; cutoffs, weekends and business days.
Read definition →Bonus expiry
The deadline to claim, activate and wager a bonus before it and its winnings are removed.
Read definition →Deposit match
The casino adds a % of your deposit as locked bonus funds, up to a cap; what the % really buys.
Read definition →Free spins wagering
Playthrough applied to what the spins win, not the spins; why 50 spins at 40x are worth little.
Read definition →Client seed
The player-side random string mixed with the server seed and nonce; change it, change every result.
Read definition →Hash verification
Recomputing a round's SHA-256 hash from revealed seeds and matching it to the pre-play hash.
Read definition →Max win multiplier
The largest payout a game can award per spin as a multiple of stake, e.g. 5,000x.
Read definition →Leaderboard race
A wager race ranks players by turnover and pays a prize pool; rank is bought at the house edge.
Read definition →Bonus abuse
The operator's term for forbidden promo use: multi-accounting, hedging, cycling, VPN claims.
Read definition →Put the terms to work
Check any bet's integrity with our provably fair verifier, calculate what a bonus is really worth with the bonus calculator, or see which sites score best overall in our best crypto casinos ranking.