The rules
How it plays
- The app holds a secret rule that decides which card may legally follow the mainline.
- Play a card as a hypothesis; accepted cards extend the mainline and rejected cards form a sideline plus a penalty draw.
- Declare no play when you believe no card in hand fits, accepting a penalty if the claim is wrong.
- After a correct play, attempt the Prophet prediction test to solve the rule.
- The round also ends when a player empties their hand or the deck runs out.
