Liar's Dice: Rules & Strategy

Overview & Setup

Liar's Dice is a bluffing game for 2 to 6 players, each starting with five six-sided dice and a cup or hand to keep their dice hidden. All players roll their dice simultaneously at the start of each round, keeping their result secret from everyone else. The only information you have is your own dice and whatever you can infer from other players' bids.

The game is known by several names — Perudo (the commercial version), Dudo, or simply Bluff. Despite regional variations in the rules, the core bidding and bluffing mechanic remains the same. It's a game of probability, observation, and controlled deception.

The Bidding Mechanic

Bidding proceeds clockwise. Each bid consists of two parts: a quantity and a face value. For example, "three fives" means the bidder claims there are at least three dice showing a 5 across all players' hands combined.

Each subsequent bid must be higher than the previous one. A bid is higher if it increases the quantity (e.g. "four fives"), increases the face value at the same quantity (e.g. "three sixes"), or both. You can never lower both the quantity and the face value at the same time.

Calling Liar

Instead of raising the bid, any player may call "Liar!" (or "Dudo!" in the Perudo variant). All players reveal their dice and count how many of the bid's face value exist in total across the table.

• If the count is less than the bid, the bidder was lying — the bidder loses one die.
• If the count is equal to or greater than the bid, the bid was valid — the challenger loses one die.

The losing player removes one die permanently from their cup. Play continues with each new round starting a fresh set of hidden rolls.

Spot-On Calls

Some rule sets include a Spot-On call: if a player believes the current bid is exactly correct — not over, not under — they call "Spot On!" If correct, everyone else loses a die. If wrong, the Spot-On caller loses a die. This high-risk, high-reward call is rare but exciting when it lands.

Wilds — The 1s Rule

In the standard Perudo rule set, ones (1s) are wild. They count as any face value for the purpose of bid validation. So if you bid "three fours" and the reveal shows two 4s and one 1, the bid is valid. This significantly increases effective quantities and raises the baseline for what a reasonable bid looks like.

Some simpler variants omit wilds entirely, treating 1s as their literal face. Always clarify before play which rule set you're using.

Last Player Standing

The player who loses all their dice is eliminated. The last player with dice remaining wins the game. With each die lost, a player's information base shrinks — making bids harder to judge and bluffs more necessary.

Two-Player Variant

In a two-player game, players typically start with five dice each and the loser of each round passes a die to the winner rather than discarding it. The player who collects all ten dice wins. This keeps both players in the game longer and shifts the dynamic toward positional momentum rather than elimination.

Strategy Tips

Open conservatively. As the first bidder in a round you have the least information. Starting with a quantity equal to the number of your best face is a safe baseline. Don't over-commit before you've seen how others respond.

Use your own dice as an anchor. With five dice hidden, you already have private information. If you hold three 4s, bidding "three fours" is almost certainly safe. Use your own dice count as the floor, then estimate what probability adds from other players.

Watch bidding speed and hesitation. Players who pause before calling Liar may be uncertain — they may have dice that partially support the bid. Players who raise quickly after a high bid may be bluffing or holding supporting dice. Reading these patterns is as valuable as the math.

Bluff into weak players. Target your largest bluffs at players who are low on dice and likely to fold — they can't afford to challenge incorrectly and may let inflated bids slide.