CRYPTO LAB / ARCADE

Tiny bots. One secret. Big getaway.

KEY RUSH

Dodge. Deliver. Keep it secret.
You’ll learn why sharing a secret helps it survive—and how too many stolen shares expose it.

SHARES HOME0 / 2
STOLEN COPIES0 / 2
RUN TIME0:00
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FIRST RUN

Get 2 bots home.

Each bot carries a different share of one secret key. Enough deliveries unlock it. Enough stolen copies expose it.

Move with arrows / WASD or tap a direction below. Space = boost.

Every bot carries one distinct share. Get enough to the exit.

Hold arrows / WASD or the direction buttons. Boost moves up to three squares in your last direction; it does not make you invincible. P / Esc pauses.

Show the actual cryptography

Every run generates real Shamir shares over the tiny field of 17 values. A delivery or disclosure is checked by recombining the actual share values.

Generated shares for this run
BotShare (x, y)DeliveredCopiedOffline

The scanners and traps are arcade rules. This page contains every share and the secret in one browser; it is not secure storage. Basic sharing does not authenticate shares or erase stolen copies. Use only the generated examples.

Why do fewer shares reveal nothing? Explore the mathematics →