PocketPlay
中文

Random Decision Maker

Roll dice, flip a coin, spin a wheel, draw random numbers, shuffle a list or split people into teams — all with real cryptographic randomness.

🔒 Runs in your browser — files never leave your deviceFree · No sign-up

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Two to sixty options work best. Edit the list and the wheel redraws instantly.

How to let the page decide

  1. Pick a mode at the top: wheel, dice, coin, numbers, or lists and teams.
  2. Type your options — one per line for the wheel and the list modes — and the wheel redraws as you type.
  3. Press the big button. Use Remove the winner to run a draw where nobody wins twice.

FAQ

Is it really random?

Yes. Every draw comes from crypto.getRandomValues, the same cryptographic generator used for keys, and the range is reduced by rejection sampling so no value is slightly more likely than another — unlike the naive modulo trick.

How does the team split work?

The list is shuffled with a Fisher–Yates shuffle and then dealt out one at a time, so the teams come out as even as the numbers allow and nobody's position in the original list matters.

Can I use it for a giveaway?

It is fair enough for a classroom or an office draw, and you can show the wheel on screen so everyone sees the result. For anything with legal or money value, use a process that produces an auditable record.

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