Crash Point

The crash point is the most important number in any crash game round — yet it is the one number that players cannot know in advance. It is determined by the RNG before the round starts, committed to cryptographically, and revealed only when the round ends.

How crash points are distributed

Crash points follow an exponential distribution. Most rounds end at low multipliers:

P(crash at or before 1.05x) ≈ 5%  (at 3% house edge — instant or near-instant busts)
P(crash at or before 2x)    ≈ 51%
P(crash at or before 5x)    ≈ 80%
P(crash at or before 10x)   ≈ 90%
P(crash above 10x)          ≈ 10%
P(crash above 100x)         ≈ 1%

This means the “typical” round ends below 2x. Rounds extending to 10x+ are notable but expected to occur roughly once every 10 rounds. Rounds extending to 100x+ occur roughly once per 100 rounds.

How crash points are generated (provably fair)

In provably fair implementations, the crash point is generated before the round using a formula like:

H = HMAC_SHA256(server_seed, client_seed + round_number)
crash_point = max(1.00, (100 × e) / (H mod 100 + 1) × 0.97)

The 0.97 factor is the 3% house edge. The formula produces the exponential distribution described above.

What you cannot do with the crash point

• Predict it from the hash — the pre-round hash is a one-way commitment; you cannot reverse it
• Predict it from previous rounds — rounds are independent; past crash points provide no information
• Detect patterns — the distribution is genuinely random; apparent patterns are cognitive bias

What you can do

Verify after the round that the revealed seed hashes to the pre-round hash — confirming the crash point was not changed mid-round.

Related terms

• Provably Fair — the system that commits the crash point pre-round
• Hash — the cryptographic commitment to the crash point
• Bust — what happens when the crash point is reached before cash-out