Library statistics and categories

There are 1,790 concepts in the current family, with the same concept set in all three supported locales. The public website publishes 24 complete samples; those samples are excluded from hosted-room draws because their answers are already readable, leaving 1,766 concepts eligible for ordinary draws.

The count refers to concepts, not translations. A Hong Kong, Taiwan, and English rendering of one concept counts once in this figure, so locale pages do not triple the library total.

The reviewed family contains 1,699 tagged opaque topics and 91 open topics. Opaque topics use three directions to create plausible branches; open topics name a shared subject and leave the uncommon property for discussion.

The two shapes are measured separately because a missing direction on an open topic is intentional. Treating every card as if it had the same structure would make the count look cleaner while misdescribing the actual game content.

Difficulty is scored from 1 to 3 in the active ruleset. The current distribution is 144 concepts at difficulty 1, 633 at difficulty 2, and 1,013 at difficulty 3.

Difficulty is a ruleset input used for scoring and is not a promise about how any particular group will find a card. Familiarity, language, and the quality of the discussion can change the experience.

The library spans 51 true-answer categories, including medicine, architecture, folklore, cuisine, military history, craft, psychology, biology, engineering, physics, and many others. These categories help editors balance new batches and find repeated subjects.

A direction label can appear as a correct category on one card and as a plausible alternative on another. Category totals therefore describe editorial coverage, not a player-facing answer key.

For the 1,699 tagged topics, each direction label is kept within an aggregate true-rate band of about 0.25 to 0.45, with the three true positions close to one third each. The purpose is to prevent a label or position from becoming a shortcut.

The rate is computed from a private editorial record and reported here only as a collection measurement. No page publishes which label is true for any specific concept.

The statistics are a snapshot of the authored pack, not a claim that all players know the same facts or that every topic appears equally often in rooms. Draws also depend on room history and the cards already used in that room.

When a card is corrected, retired, or newly reviewed, the figures can change. The dated updates page records those structural changes so this page can be read with the right time context.