Perudo

Private dice, public nerve. Raise the table's bid or call a bluff. Ones are wild, and the last player with dice wins.

1. Everyone starts with five hidden dice. A random player opens the first round; every surviving player's dice are rolled fresh each round.
2. Bid at least a quantity of one face across the whole table. Ones are wild for faces 2–6; a bid of ones counts only ones. You cannot open with ones.
3. From 2–6, raise the quantity with any face 2–6, or keep the quantity and raise the face. To switch to ones, halve the old quantity and round up.
4. From ones, raise the quantity of ones, or switch to 2–6 with at least twice the old quantity plus one. You may bid more dice than exist.
5. On your turn, raise or challenge the previous bid. Reveal all dice: if at least that many match, the challenger loses a die; otherwise the bidder does. An exact count defeats the challenge.
6. The loser opens the next round. If they are out of dice, the next surviving player clockwise opens. The last survivor wins. Last die / Palifico and Exact / Calza are off.