A free, playful password puzzle that teaches real security — all in your browser, your password never leaves your device.
Try it Free →16 progressively ridiculous, conflicting rules unlock one by one — digit sums, Roman numerals, the current time, emoji, periodic-table symbols and more.
Every rule shows pass or fail the moment you type, with friendly hints that tell you exactly how far off you are.
Knowledge cards pop in as you progress, teaching genuine tips: length over complexity, no reuse, password managers, and more.
On winning, your final password gets a real entropy estimate plus weak-pattern detection and concrete improvement advice.
Everything runs locally in your browser. Your password is never uploaded, stored on a server, or shared.
Single-column responsive layout, touch-friendly collapsible rules, and full dark-mode support.
Type any password into the big monospace box to reveal the first rule.
Each time all current rules pass, a new, harder rule unlocks. Use the hints when you get stuck.
Clear all rules to trigger a confetti celebration, then read your real password strength report and tips.