Methodology

The model

We use the standard crash-game model: with return to player r, the chance that a round reaches a multiplier x is r ÷ x for any x ≥ 1. It is implemented as crash point = ⌊100 × r ÷ (1 − U)⌋ ÷ 100, with U a uniform random number and a minimum of 1.00x. Real games may differ in details such as rounding, a maximum multiplier or the RTP version the operator selects; where that matters we say so on the page.

Two instruments must agree

Every number printed on the site comes from one script and is computed twice, independently:

Exactly, from closed-form formulas, exact binomial tails and an exact dynamic program for losing streaks.
By simulation, from millions of crash points drawn from uniform random numbers, counting what happens without using the formulas.

If the two disagree by more than the statistical tolerance, the site does not build. The current check set includes the chance of reaching 1.5x, 2x and 10x, the average payout at each, the share of rounds ending below 1.01x, the chance of a ten-loss streak within 1,000 rounds, the expected longest losing streak, the chance of being ahead after 100 bets, and a literal Martingale simulation. Numbers in the text are inserted by the build from that verified set; none are typed by hand.

Sources

For rules and legal status we link to primary sources: regulators, official registers and government pages. Help lines and self-exclusion schemes are checked against the organisations’ own websites, and a phone number is only published if we found it there. Links are re-checked before each release.

Updates and corrections

Each page shows when it was last updated. The legal map is reviewed at least quarterly and whenever a major change is announced. Corrections are listed on the corrections page. You can report an error through the contact form.

How operators are listed

An operator is listed only in a market where its domain appears in the official register we download every day: the UK Gambling Commission register or Brazil’s SPA/MF list. If it drops out of the register, it stops being shown automatically. We show no bonus offers. Commercial terms never influence order or wording, and we never list the 1xBet group or brands we believe are linked to it.

Use of AI

Texts are drafted with the help of AI tools and edited under the 2xCrash name. AI is never used to produce figures: every number is computed by code and verified as described above.