JOKR Crash: cash out before the crash

JOKR Crash is our own crash game. A multiplier starts at 1.00× and rises until the round crashes; everyone who cashed out before that moment wins their stake times the multiplier at which they left. The crash point is derived from a seed committed by its hash before betting opens, so every round can be recomputed afterwards.

How a round plays

1. Betting opens; place your stake and, if you like, an auto cash-out target.
2. The round starts and the multiplier climbs from 1.00×.
3. Tap cash out at any moment, or let the auto cash-out trigger at your target.
4. When the round crashes, stakes still in play are lost; cash-outs already taken are paid.

An auto cash-out pays exactly its target when the target is below the crash point. The maximum bet is $120 and the maximum win per round is $2,500; the multiplier is capped at 1,000×.

The formula, in plain words

The crash point is computed from the first 52 bits of an HMAC-SHA256 of the round's seed and salt, with a 0.964 factor applied, floored to two decimals and never below 1.00×. The exact expression is in the rules below.

Verifying a round

Before betting opens, the SHA-256 hash of seed + salt is published. After the crash, both values are revealed. Paste them into the verifier on the Fairness & RNG page: it recomputes the hash (which must match what you saw before the round) and the crash point. Rounds played under the current rules have a salt beginning with "v2-".

Rules

• The multiplier rises from 1.00× until the round crashes. Cash out before the crash to win your stake × the multiplier at that moment; an auto cash-out pays exactly its target when the target is below the crash point.
• Crash point = floor(100 × 0.964 × 2^52 ÷ (2^52 − h)) ÷ 100, where h is the first 52 bits of HMAC-SHA256(seed, salt). It is never below 1.00× and is capped at 1,000×; the maximum win per round is $2,500 (max bet $120).
• The SHA-256 hash of seed + salt is published before betting opens; both values are revealed after the crash.
• The salt of every round played under these rules starts with “v2-”; rounds whose salt has no such prefix were played with 0.9 instead of 0.964 in the formula above.

Rakeback is paid on top of the game's payouts: 5 % to 15 % of the rake (3 % of each bet) depending on your JOKR tier and VIP level, plus temporary boosts added on top of that rate (see the Promotions page); the boosts are paused while a deposit bonus is active.

Rakeback and bonuses

Crash bets earn rakeback as every Original except Ballz: 5% to 15% of the rake depending on your JOKR tier and VIP level, paid on top of the game return. Crash counts towards bonus wagering at the provably-fair rate on the Bonus Terms page. The Promotions page explains rakeback and chests; JOKR Mines uses the same commit-reveal approach on a grid, and the Originals page compares all six games.