Host rule cards · keep secret
Rule: a positive whole number is even. Accept 2, 8; reject 3, 7.
Rule: the word starts with B. Accept balloon, bridge; reject kite, apple.
Rule: the object is normally worn. Accept hat, coat; reject spoon, chair.
Hidden rule game: rules and printable kit
A host accepts or rejects examples according to a secret rule. Players test examples until they can explain the rule.
- Suggested group
- 3–12
- Plan for
- A short round; see the steps
- Bring
- Rule and example cards optional
Set up and play
- The host secretly chooses one printed rule. Read two accepted examples and two rejected examples.
- Players suggest new examples; the host answers only whether each passes the rule.
- A player who thinks they know explains privately to the host or tests two further examples.
Finish the game
Reveal after the group solves it or after five minutes. Explain the rule clearly and move to a different rule for another round.
Your printable materials
Original starter materials below. Print at 100% scale; turn off browser headers and footers. Select Letter or A4. Review the preview before making a batch.
Try another game
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Make room for everyone
Invite guests to take a turn or pass. Explain the rules before starting, choose materials that suit your group, and offer a seated or read-aloud option when helpful.