An O/X party game for 3–12. Answer yes or no in secret, then guess the yes-count—including yourself. Create a room and invite friends; no sign-up.
Create a room and share its invite link. Take turns asking yes/no questions. Everyone answers O (yes) or X (no), then predicts how many chose O, including their own answer. Only the total is revealed. Solo practice uses bots to teach the steps; it is not a multiplayer session. I am hiddenO’s developer/operator. This listing text was prepared with AI assistance and reviewed by me.
hiddenO was submitted to SlowDen by hiddenO developer. SlowDen did not make this game - it is published here from the developer's own submission, added on 2026-10-29. It runs in the browser with no download, no install and no sign-up.