I Know...You Don't Card Game

★ 4.6 · 221 ratings

$9.97

What the listing showed when we last looked. The live page has the final word.

3-7 playersage 10+about 10 minutesspeed matching

One player knows the secret rule, and the rest of the table tries to crack it by watching which cards work and which ones fail. On your turn, you can test a single card, try a combo, or trade in your hand to find the pattern. Each round runs about ten minutes as players race to spot the hidden logic.

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How to play, step by step

Secret Rule DeductionThe round revolves around figuring out the hidden rule governing which cards can be played. You watch what hits the table, test your own cards, and deduce the pattern before anyone else at the table.

Three Turn ChoicesYou can play one card to test a hunch, commit multiple cards at once, or swap out your entire hand for fresh options. The table grows quiet as players study each play, then gets loud when someone thinks they have solved the code.

Table Size and AgeThe deck is tuned for three to seven players, with age ten and up printed on the box. The quick ten minute run time lets you shuffle and reset as soon as a secret rule is revealed.

Five Difficulty LevelsWe included five distinct difficulty tiers for the secret rules. You can start with basic pattern matching for quick rounds, then step up to complex rule sets as players become sharper at spotting the code.