Tomasz Hanusiak, creator of Blefuj
Published: 2026-07-01 · Updated: 2026-07-12
This guide describes rules and mechanics actually available in the Blefuj game.
We've gathered the most common questions about Blefuj: rules, modes, privacy and Premium. Don't see your question? Write to kontakt@blefuj.pl.
What is Blefuj?
It's a party bluffing-and-deduction game you play on one phone in the browser. It has a group mode (Impostor) and two-player modes (Duo and Mind Leak).
How many people can play?
In the classic mode, 3 to 10 people on one device. The Duo and Mind Leak modes are for exactly 2 people.
Is the game free?
Yes. The basic game is free and needs no account or login. We're also planning an optional Premium that will add categories and packs and remove ads.
Do I need to install anything?
No. The game runs instantly in your phone's browser. You can optionally add it to your home screen as an app (PWA), but that's optional.
Do you play on one phone?
Yes. The phone travels around the group or sits in the middle of the table. You don't need separate devices or a shared online room.
What does the impostor see?
The impostor doesn't know the secret word, they only see that they're the impostor. In hint mode they may get a gentle clue that evens the odds.
What is Mind Leak about?
It's a two-player mode: one person knows a secret and acts out scenarios as if it were true, without saying it outright. The other asks questions and finally picks the real secret from 3 options.
Can I play in Polish and English?
Yes. The interface and content are available in Polish and English, switch the language with one tap.
Is my data safe?
Free play needs no account and collects no personal data. Names, words, secrets and votes stay on your device. Analytics and ads run only with your consent.
Is Premium a subscription?
No. When Premium becomes available it's planned as a one-time payment, no subscription, no renewals. The free game always remains available.