Crash

One number, one decision window

Crash strips blackjack-style decisions down to a single question: when do you take profit? The crash point is drawn before the animation runs. You cannot influence it. You can only choose a cash-out target and bet size. That makes Crash high variance by design: 2× targets hit often, 20× targets hit rarely, but the expected return per dollar wagered stays at 99 cents over a huge sample.

Instant 1.00× crashes happen about 1% of rounds. That is baked into RTP. Auto-cashout at 1.01× still loses on those rounds.

Instant crashes at 1.00× happen about 1% of rounds. That is not a bug. It is part of the published RTP. Auto-cashout at 1.01× still loses on those rounds.

How Crash works

Place a bet before the round starts. The multiplier rises from 1.00× and grows on a smooth curve. At a random point the round crashes, if you cashed out before the crash, your bet is multiplied by the value at cash-out time. Auto-cashout lets you lock a multiplier in advance (e.g. 2.00× = 2× return triggered automatically).

Multiple players can bet the same round. Everyone sees the same curve and the same crash multiplier. Two players with different cash-out targets can win and lose on identical crash points.

Everyone in the round shares one crash point. Two players with different cash-out targets win and lose on the same curve.

How to run a Crash session

Pick one cash-out target for the whole session. Switching targets mid-run changes variance, not EV.

• Bet 1-2% of bankroll per round max.
• Use auto-cashout if manual clicks miss windows.
• Hard stop-loss in dollars. Tail risk kills bankrolls before RTP converges.
• Lower swing alternative: Plinko low risk, 8 rows.

Crash rules at a glance

One round, one global crash point, individual cash-out timing.

Cash-out target vs. expected value

The expected value of any cash-out target is identical (99 cents on the dollar), what changes is variance. Cashing at 1.50× hits ~66% of the time and turns small profits into a flat curve. Cashing at 10× hits ~10% of the time but each win is a 10× multiplier of your stake. Fixed-fraction sizing (1-2% of bankroll per round) and a hard stop-loss are the only meaningful protection against tail-risk.

Every cash-out target has the same 99% EV. Pick the target that matches how much swing you want in an hour, not the one that "feels due." Fixed 1-2% of bankroll per round and a hard stop-loss beat any progression script.

How to verify a Crash round

The crash point is derived from HMAC-SHA-256 of the seed pair plus nonce, mapped through a public formula that gives a 99% RTP target distribution. The seed pair is published the moment the round resolves, recompute and confirm the crash multiplier independently.

1. Before the round, copy the server seed hash from the provably fair panel. That hash is the commitment. The raw seed is hidden until the round ends.
2. Set or accept a client seed. The nonce increments on every bet. Together they feed the HMAC-SHA256 function Duel publishes in the rules.
3. Play the round. When it settles, reveal the server seed and recompute the digest with your client seed and nonce.
4. Map the digest to the game outcome using the rules for that title. If your result does not match what Duel paid, open a ticket with the round ID.