Reference desk · 40 terms

Duel Casino Glossary

Forty terms a working Duel player runs into before the first cashout: rakeback math, RTP versus volatility, KYC thresholds, hash chains, parlay variance, network fees on the wrong chain. Bookmark this page; the wallet receipts make a lot more sense once you have read it.

# Affiliate

Partner who earns a commission on the GGR generated by players they refer. Duel’s public affiliate program pays competitive RevShare with no negative carry-over.

# AML (Anti-Money Laundering)

Compliance framework that obliges operators to flag suspicious transaction patterns. AML is the reason structured deposits with no wagering get held, and why a $20k+ payout triggers manual review even on a clean account.

# Bonus Lock

State where balance is restricted to bonus funds only and cannot be withdrawn until wagering is cleared. The opposite of cash. Duel does not use bonus-locked balances; rakeback and rebates always credit as cash.

# Crash

Multiplier rises until a randomly chosen point and then crashes. Cash out before that moment, you keep the multiplier; one tick too late, you lose the stake. RTP at Duel is 99%, with a verifiable hash chain.

# Crypto Address

Public string used to receive funds on a given chain. Always match the chain on the sender to the chain on the recipient: USDT-ERC20 sent to a USDT-TRC20 address is permanently lost.

# Deposit

Funding the account. 13 chains including BTC mainnet, Lightning, ETH, USDT (5 networks), USDC (5 networks), TRX, SOL, BNB, TON, DOGE, BCH, XRP. Credit lands after the first confirmation on the relevant chain.

Related guide: Deposit guide

# Deposit Limit

Daily / weekly / monthly cap that the player sets on their own account. New limits apply instantly; loosening a limit is delayed by 24 hours by design.

# Dice

Over-under prediction game with adjustable win chance. RTP is 99% across all targets; the casino edge is symmetric whether you pick 2.00× or 9,900×.

# Duel Originals

Ten in-house games (Dice, Mines, Plinko, Crash, Limbo, Keno, Hi-Lo, Wheel, Groomer’s Van, Beef) tuned to 99–100% RTP and provably fair end to end.

Related guide: All originals

# Freebet (Sports)

Single-use sports wager funded by the casino. Wins return the net profit only; loss returns nothing. At Duel, freebets are issued through promo drops, not as on-deposit bonuses.

# GGR (Gross Gaming Revenue)

The casino’s revenue before paying out winnings. Formula: wagered − returned over a window. Rakeback is calculated as a percentage of this, never of total wagered, which is why a tighter session can produce a larger rebate than a much bigger losing session.

# Hash (Seed)

Result of running a one-way function (SHA-256) over the server seed before the round. The hash is published, the seed is revealed only after the round so the player can verify it has not been swapped.

# House Edge

Math complement of RTP: 100% − RTP. A 99% RTP game has a 1% house edge. On Duel originals at 100% RTP, the edge is 0%, so the casino’s revenue comes entirely from rake on player-versus-player formats and from the volume on third-party slots.

# hreflang

HTML attribute that tells search engines which language a URL targets. Duel publishes hreflang for 13 locales so users see the page in their language without redirect drift.

# KYC (Know Your Customer)

Identity-verification process. Duel runs a $2,000 daily threshold: cumulative withdrawals under that line require nothing, above it you submit a passport plus a 30-second selfie video. Median approval is sub-24h.

Related guide: Withdrawal guide

# License

Regulatory approval that allows the operator to legally process bets. Duel operates under Anjouan ALSI-202411026-FI1, audited annually for game fairness and AML controls.

# Magic Link

Single-use email link that signs you in without a numeric code. The link expires in 30 minutes and works only in the same browser session that requested it.

# Memo / Tag

Mandatory secondary identifier for chains like XRP and TON. Without the memo, the deposit reaches the exchange wallet but cannot be attributed to your account; a manual reconciliation is required.

# Mines

Sweeper-style grid where you reveal tiles to multiply stake until you hit a mine. Multipliers scale with the count of remaining safe tiles divided by total tiles, minus a 1% house edge.

# Network Fee (Gas)

On-chain transaction fee paid to miners or validators. Duel covers the fee on withdrawals; on deposits the player pays the sending wallet’s fee. TRC-20, Lightning and L2s are typically the cheapest.

# Nonce

Counter that increments each bet inside the same seed pair. Verification scripts use (server_seed, client_seed, nonce) to reproduce a result, so you can audit any bet from your history.

# Originals Rebate

Weekly 5% rebate on stake on Duel originals, paid out at the end of the week if you ended down. Separate from slot rakeback because originals run at zero edge to begin with.

# Orphan Bet

Wager whose outcome was confirmed but whose payout failed to credit. Detected by reconciling the seed/nonce log against the wallet ledger, auto-recovered within five minutes.

# Parlay (Accumulator)

Sports bet that combines two or more selections; all must hit for the ticket to win. Multiplies odds, multiplies variance.

# Plinko

Pin-and-ball game. A token drops through rows of pegs and lands in a slot with a payout multiplier. Payout distribution is selectable from low to extreme volatility.

# Provably Fair

Cryptographic proof that a game outcome was determined before any bet was placed. The casino commits a hashed server seed, the player submits a client seed, the result is computed deterministically from both. Anyone can verify it after the round by re-running the same hash.

Related guide: Fairness page

# Rakeback

A rebate paid back to a player as a percentage of the casino’s gross gaming revenue (GGR). At Duel, slot rakeback is 50% of GGR, paid in real time, with no wagering and no maximum cashout. The slot row in your wallet ledger lists each one-minute window separately.

Related guide: How rakeback works

# RevShare

Affiliate commission model paying a percentage of player GGR for the lifetime of the account. The opposite of CPA, which pays a fixed amount per qualifying registration.

# RNG (Random Number Generator)

Algorithm that produces sequence of pseudo-random numbers. Regulated casinos use audited HMAC-SHA256 or chacha20 RNGs. “Provably fair” adds the cryptographic guarantee that the casino did not pick the seed after seeing your bet.

# RTP (Return to Player)

Theoretical long-run percentage that a game returns to players. Duel originals are tuned to 99–100% RTP versus the 96% slot industry baseline. RTP is a long-run statistic; over 100 spins it tells you almost nothing, over 100,000 it converges.

Related guide: Originals catalog

# Seed

Input string that drives the random number generator. Provably-fair games use three: a hashed server seed committed before the round, a client seed the player can rotate at will, and a nonce that increments per bet.

# Self-Exclusion

Player tool to lock the account for a fixed period (24h, 7d, 30d, permanent). Duel honors cool-off requests immediately and does not run reactivation marketing on excluded accounts.

Related guide: Responsible gaming

# Sportsbook

The bookmaking arm of the casino. Duel covers 50+ sports and around 15,000 daily markets, with most lines refreshed every 1–2 seconds via WebSocket.

Related guide: Sports

# TOTP / 2FA

Time-based one-time password used as a second factor. Duel supports TOTP via any standard authenticator (Aegis, 2FAS, Authy). 2FA gates withdrawals and password resets.

Related guide: Register guide

# Variance

Statistical sibling of volatility. In gambling math, variance is the standard deviation of round outcomes squared. It tells you how much your bankroll can swing inside a session, and is the reason “theoretical” RTP rarely matches “tonight’s” RTP.

# VIP Cashback

Weekly rebate paid as a percentage of net loss across a player’s entire account. At Duel it ranges from 5% (Bronze) to 20% (Diamond). Stacks with slot rakeback and originals rebate.

Related guide: VIP tier table

# Volatility

How widely a game’s outcomes deviate from its average. High-volatility games pay infrequently but pay big; low-volatility games drip out small wins. RTP and volatility are independent: two 96% RTP slots can have wildly different cashout rhythms.

# Wagering Requirement

Multiplier you must bet before bonus funds become withdrawable. Duel rakeback has 0× wagering: it lands as cash. Most other operators charge 25–40× the bonus, which on a 100 USD bonus equals 2,500–4,000 USD of turnover before you can cash out.

# Wallet Ledger

Live, per-event log of every credit and debit on the account: bets, payouts, rakeback, rebates, deposits, withdrawals, with timestamps and tx-hashes when relevant. Exportable as CSV.

# Withdrawal

On-chain payout of account balance. Duel auto-approves under 20,000 USD, median time from confirm to broadcast is around three minutes. Network fee is paid by the casino.

Related guide: Withdrawal guide