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Every random result comes from your browser's built-in crypto.getRandomValues (cryptographically secure random numbers) and is picked without bias. Nobody can preset or rig the outcome.
The rungs are random, and the final mapping is a uniform permutation from cryptographic random numbers, so every player has the same chance of every result.
2 to 12 per ladder.
No. The whole tool runs in your browser. Names, prizes and results are never sent to a server; the draw history is kept only in this tab and disappears when you close it.
Completely free, with no sign-up or login. Just open the page on your phone or computer.