Twenty Questions Game

Think of anything and it will find it in twenty yes/no questions - or let it hold the secret and you do the asking. Every question is one turn of one server-side conversation, and the whole established-fact ledger is restated on every turn so a long game cannot drift. When the app holds the answer it commits to it first: a code derived from the secret is shown before question one and checked against the reveal, so the answer cannot quietly become whatever fits your questions. When you hold the answer, the browser flags any question that repeats an earlier one, inverts it, or is already settled by it. A free lane needs no account at all - the fact ledger, the repeat detector, an information meter that shows the candidate space falling, a question-quality score, an axis coach, a two-player mode and two complete recorded games.

Every public app is built from a security-scanned skill and must pass a clean scan — skill and frontend — before it can be listed. Have a skill of your own? Turn it into an app — or read the step-by-step walkthrough.