Imposterium: the impostor party game where words give you away
Imposterium is a free impostor party game for 3 to 12 players. Everyone gets the same secret word from a category you choose, except the impostor, who has no idea what it is. Give short clues, talk it out, and vote out the spy before they blend in and win. It runs right in your browser with no download and no account.
A who-is-the-spy game built for any group
Imposterium is the classic who-is-the-spy game in a friendly online form. The crew shares one secret word while the impostor tries to fake it convincingly. It's a fast social deduction game that works for game nights, parties, families, classrooms and long car rides.
Play online or pass one phone around
Play online by sharing an invite link, QR code or short join code so friends jump in from their own phones. Prefer the table? Use the in-person mode, where one phone is passed around and clues and voting happen out loud.
Hundreds of words and your own AI categories
Choose from built-in categories or type any topic and let the AI write a fresh word list for it. With words in 10 languages and easy, normal and hard difficulty, every round of this undercover word game feels new.
Free, instant and no sign-up
Imposterium is a free party game online with nothing to install and no account to create. Open the page, start a game and play. It's mobile-first, so any phone, tablet or computer works.
What is Imposterium?
Imposterium is a free impostor party game for 3 to 12 players. Everyone shares a secret word except the hidden impostor, and the group has to figure out who is bluffing.
How do you play in a nutshell?
Pick a category, deal the secret word to everyone but the impostor, take turns giving short clues, discuss, then vote on who you think the spy is.
Do I need to download or sign up?
No. Imposterium runs in your browser with no app to install and no account to create. Just open it and start a game.
How many players do I need?
You can play with 3 to 12 players. Bigger groups make the discussion and voting more chaotic and fun.
Can we play without being in the same room?
Yes. Create a game and share the invite link, QR code or join code, and friends can play online from anywhere on their own phones.