Two Truths and a Lie Generator
Two truths and a lie is usually played with facts about yourself, which makes it a game about how well people know you and impossible to settle when they disagree. This plays it with recorded facts instead. Each round gives three statements about one country, element or unit of measurement; two are read straight off the record and one has had a value swapped for another subject's, so the falsehood is genuinely false rather than merely surprising, and the round can be settled by looking it up.
What this generator does
Picks a subject, writes three statements about three different things recorded about it, swaps one value for another subject's, and then reads the finished round back against the data to confirm that two statements are true and one is not.
How to use this tool
- Pick a topic and how many rounds you want.
- Read each round's three statements out; every round is about a different subject.
- Let the group argue, then take a vote on which statement is the lie.
- Show the lies to settle it.
- Keep the seed if you want to run the identical set past another group.
Understanding the controls
- Topic
- Countries and capitals, chemical elements, or units of measurement. Each draws on a curated list this site already publishes, with the same exclusions — countries with a disputed capital, for instance, are not in it.
- How many rounds
- One to ten. Every round in a sitting is about a different subject, because two rounds about the same country would give each other away.
- Seed (optional)
- Any word rebuilds the identical set of rounds, which is how you put the same questions to two teams. Deterministic, not cryptographic.
Common use cases
- A quiz round that needs no preparation and no answer sheet
- A warm-up for a class studying geography, chemistry or measurement
- An icebreaker for a group who do not yet know each other well enough for personal facts
- A pub-quiz style game where the answers can actually be checked
- Running the same set past two teams by sharing the seed
How this generator works
The lie is made by borrowing another subject's value — a real capital city, a real chemical symbol — so it reads as plausibly as the truths do. Borrowing alone is not enough: two countries share a continent often, and a swap that lands on the true value would leave a round with three truths. Measured, that happens on 22 per cent of continent swaps and 16 per cent of element-category swaps, against essentially none for capitals or symbols, because the trap is an attribute with few distinct values rather than a particular topic. So a swap is kept only when it genuinely differs, and the finished round is then judged again from the data rather than from the builder's note of which statement it altered.
Randomness and fairness
The subject, which statement is false and the value it borrows all come from your browser's cryptographic random source unless you type a seed. A seed is for reproducibility, not cryptographic strength — anyone with it can rebuild your rounds.
For how randomness is produced across the whole site, see how Generate Random works.
Limitations and good to know
- The facts are drawn from three curated lists, so the game is about geography, chemistry and measurement rather than anything the group brings to it.
- Statements are built from a template each, so their wording repeats from round to round even though the facts do not.
- Rounds are not graded for difficulty; a well-known capital and an obscure one are equally likely.
- It cannot check statements you write yourself — the check only works on facts the site holds.
- Nothing is scored or tracked between rounds; keeping score is up to you.
Privacy and your data
The rounds are built and checked in your browser. Nothing you choose or type, and no round built from it, leaves the device.