Play Liar's Dice

How to play on this page

Everything you need to play a full game of Liar's Dice is built into the board above — there is nothing to install, no account to create, and no second player required. You begin by creating a character: type in a name, choose one of the pirate or naval portraits, and adjust the skin tone and hair colour until your captain looks the part. Your choice is remembered in your browser, so the next time you come back your character is already waiting for you.

When you press Set sail & deal the dice, the game secretly rolls five dice for you and five for each computer opponent you selected, and seats the whole crew around the table. Your dice are shown face-up in the tray so only you can see them; every opponent's dice stay hidden under their cup, exactly as they would around a real table. From there, play moves around the table one decision at a time, until only one player still has dice.

On your turn you have exactly two choices, and the controls mirror them directly. The first is to make a bid: use the plus and minus buttons to set a quantity, tap one of the six dice faces to choose a value, and press Place bid. A bid is a public claim about how many dice of that value are showing across the entire table — every cup combined, not just your own. The second choice is to call "Liar!", which challenges the bid made by the player immediately before you. You can only challenge once at least one bid exists, so the opening player of each round must always bid.

Because the game enforces the rules for you, you never have to remember whether a raise is legal. If you try to place a bid that isn't a valid increase over the standing bid, the board will tell you and let you adjust. Watch the little speech bubbles pop up over each opponent as they bid or call — that is the crew reacting in real time — and keep an eye on the running log beneath the table, which records every bid, challenge, and lost die so you can always retrace how the round unfolded.

The rules in brief

If you have never played before, here is the shortest version that still lets you win. A fuller treatment — history, math, and advanced tactics — lives on the dedicated Liar's Dice rules and strategy page.

• Every player rolls five hidden dice at the start of each round and looks only at their own.
• A bid names a quantity and a face — for example, "four fives" means the player claims there are at least four dice showing a five across all cups on the table.
• Each turn you must raise or challenge. A legal raise either increases the quantity, or keeps the quantity and increases the face value, or both. You can never bid something lower than or equal to the standing bid.
• Ones are wild. A die showing a one counts as any face value you like — so when someone bids on fives, every five and every one on the table counts toward that bid. The only exception is when the bid itself is on ones.
• Calling "Liar!" ends the round. All cups lift and the relevant dice are counted. If the real total meets or beats the bid, the bid was truthful and the challenger loses a die. If it falls short, the bidder was caught lying and they lose a die.
• Zero dice means elimination. The loser of each challenge shrinks to fewer dice; when a player hits zero they leave the table. The last player holding any dice wins the game.

One consequence worth internalizing early: because the total number of dice falls every time someone loses one, the odds shift constantly. A bid of "eight sixes" is nearly safe when thirty dice are in play and reckless when there are only twelve. Good players re-estimate the expected count at the start of every single round rather than relying on a feeling carried over from the last one.

Creating your character

The character creator is more than decoration — it gives you a captain to root for as the dice fall. Each portrait is hand-built pixel art rendered live in your browser, so there are no images to download and nothing to load from another server; the whole gallery is generated on the spot from a compact set of sprites. You can pick from a roster of pirates and officers — captains, first mates, deckhands, gunners, navigators, quartermasters, lookouts, and naval officers among them — and then recolour each one with three skin tones and five hair colours, giving a wide range of combinations to make your captain your own.

Your opponents are drawn as characters too, each with a pirate name and a distinct look, so the table feels populated rather than abstract. When a player is eliminated their card fades and greys out, and the last captain standing gets a victory portrait. It is a small touch, but it turns a spreadsheet of numbers into a game with faces at the table — which is exactly what makes bluffing feel personal.

Choosing a difficulty

This version ships with four distinct AI personalities, each built on a different model of how much the computer knows and how much risk it is willing to take. They are not cosmetic labels — they are genuinely different opponents, ported directly from the multiplayer engine that powers the full Fothergill Liar's Dice server.

Easy

The Easy opponent understands the basics but is happy to make mistakes. It leans heavily on its own dice, bids conservatively, and only challenges when a bid looks clearly inflated — and even then, not every time. It rarely bluffs with intent, so if an Easy bot is bidding aggressively on a face, there's a decent chance it actually holds those dice. This is the right choice for a first game or for teaching someone the flow of play.

Medium

The Medium opponent adds real statistics. It estimates the expected number of matching dice across the table using the one-in-three rule of thumb, blends that with what it holds, and challenges when a bid drifts meaningfully above expectation. It will occasionally pick the second-best of its available bids to stay unpredictable, which makes it a fair, honest test for a player who knows the rules but is still developing a feel for the odds.

Hard

The Hard opponent plays close to the mathematics of the game. It models each face as a binomial distribution, computes an expected value and a standard deviation for the unseen dice, and uses those to decide both when to call and how far to push a raise. A bid that sits more than one and a half standard deviations above what the numbers support will almost always get challenged; a bid inside that band usually won't. It takes small, calculated risks and mixes in just enough randomness to avoid being predictable. Beating Hard consistently means your own estimates are genuinely good.

Impossible

The Impossible opponent is exactly what it sounds like: it can see every die on the table, including yours, and it plays perfectly on that information. It will never make a bid that isn't literally true, and it will challenge the instant your bid exceeds the real count. You cannot out-calculate it — the only way to survive is to force it into positions where any legal bid it could make is still a losing one, or to get lucky with the dice. It exists as a benchmark and a puzzle rather than a fair fight, and clawing a win out of it feels appropriately triumphant.

Reading the odds while you play

The single most useful number in Liar's Dice is one-third. Because ones are wild, any unseen die has two ways to match a given face — it can show that face (a one-in-six chance) or show a one (another one-in-six chance) — for a combined probability of roughly one in three. That means that, on average, about a third of all the dice you cannot see will count toward any face you name.

Put that to work. Suppose there are fifteen dice on the table and you are holding two fours. Of the ten dice hidden from you, you can expect around three to be fours or wild ones, giving an expected total near five. So a bid of "five fours" sits right at the expectation, "four fours" is comfortably safe, and "seven fours" is a genuine gamble that needs an above-average roll to be true. When an opponent pushes a bid well past that expected line, the same arithmetic tells you it is probably time to call. The Hard and Impossible bots are effectively running this calculation every turn — playing against them is the fastest way to sharpen your own version of it.

Strategy tips for winning

Anchor bids to dice you actually hold

The safest raises lean on faces already sitting in your own cup. If you hold three sixes, bidding on sixes means you only need a little help from the rest of the table to be telling the truth. Bluffing on a face you own none of is high-variance — sometimes necessary, never your default.

Bluff just above the expected value

The most effective bluffs are the believable ones. A bid that sits a hair above the statistical expectation puts your opponent in an awkward spot: calling risks their die if the roll was even slightly generous, but letting it stand forces them to raise into thinner air. Wild, obvious overbids only work as a rare psychological weapon, not a strategy.

Don't call "Liar!" too early

This is the most common beginner mistake, and the wild ones are why. Honest bids are more likely than the raw numbers suggest, so a low bid early in a round is usually true. When in doubt on a small bid, raise instead of challenging — save your challenges for bids that have clearly outrun the math.

Recount the table every round

Eliminated dice change everything. Beginners keep bidding as if the table were still full; strong players recalculate the expected count each round and pounce the moment an opponent overbids a thinned-out table. Watch the dice counts on each opponent's card above — they shrink as the game goes on, and so should the bids.

The whole game turns on a single tension: every bid is a small, public commitment, and every commitment is a piece of information your opponents can use against you. Say just enough to stay ahead, and no more.

How the AI actually decides

The opponents on this page are not scripted and they are not choosing raises at random. Each turn, an AI player builds a picture of the table: it counts its own dice as certain information, estimates the unseen dice using the probability described above, and compares the standing bid against that estimate. If the bid still looks plausible, it searches the space of legal raises and scores each one by how safe it is — favouring bids that its own dice and the expected value comfortably support. If the bid has climbed past what the math can defend, it calls "Liar!" instead.

The difference between difficulties is how sharp that picture is and how much risk the player accepts. Easy uses rough thresholds and forgives itself for mistakes; Medium tightens the statistics; Hard adds a full binomial model with standard deviations and takes deliberate, measured risks; Impossible discards the guessing entirely because it can see the whole table. A touch of controlled randomness in the lower difficulties keeps the bots from feeling robotic, so you still get the occasional human-feeling bluff or fearless call that keeps you honest.

Frequently asked questions

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