BluffJudge 瞞天估局

Free Online Multiplayer Bluffing & Deduction Party Game

What is BluffJudge?

BluffJudge (瞞天估局) is a free, browser-based multiplayer party game that combines social deduction, bluffing, and psychological warfare. Designed for 3-9 players, it's the perfect icebreaker for game nights, parties, team building, or casual hangouts with friends.

Unlike traditional board games, BluffJudge requires no download, no account, and no installation. Simply open the website on any device—phone, tablet, or computer—and start playing instantly. The game uses a pass-and-play format where players take turns viewing the screen, making it ideal for in-person gatherings.

How the Game Works

Each round follows a simple but engaging structure:

  1. Topic Selection: The game randomly draws a topic (e.g., "Hillier Lake", "Antikythera Mechanism", "The Cardiff Giant") from a library of 40+ intriguing mysteries, historical oddities, and scientific phenomena.
  2. Secret Role Assignment: One player becomes the Judge (reads the topic aloud), one becomes the Knower (sees the true description), and one becomes the Bluffer (sees only 3 hint keywords). Remaining players observe.
  3. Preparation Phase: The Knower and Bluffer have limited time (default 30 seconds) to read their information and prepare.
  4. Questioning Round: The Judge asks questions. The Knower answers truthfully; the Bluffer must improvise using only the hint keywords.
  5. Voting: The Judge votes on who they believe is the Bluffer.
  6. Scoring: Points awarded based on voting outcomes—Knowers and Judge score for correct identification; Bluffer scores for successful deception.

After all rounds, the player with the highest score wins!

Key Features

🎮 3-9 Players

Flexible player count with balanced gameplay for any group size. Optimal at 5-7 players.

📚 40+ Built-in Topics

Curated library of mysteries, oddities, and phenomena across easy, medium, and hard difficulties.

✏️ Custom Topics (JSON)

Import your own topic libraries for themed parties, education, or inside jokes.

🌐 Bilingual: 中文/English

Full UI support for Traditional Chinese and English. Play in any language verbally.

⚙️ Adjustable Settings

Customize rounds (1-20), reading time (10-120s), and player names.

💾 Local Save

Scores and settings persist in browser localStorage—no account needed.

📱 Mobile Responsive

Works perfectly on phones, tablets, and desktops. Pass-and-play optimized.

🔗 Share Results

Native Web Share API support with clipboard fallback for score sharing.

Why Play BluffJudge?

BluffJudge stands out in the crowded party game space because it hits the sweet spot between accessibility and depth:

Getting Started in 30 Seconds

  1. Open bluffjudge.com on any device
  2. Enter player names (3-9 players)
  3. Choose rounds and reading time (or use defaults)
  4. Tap "Start Game" and pass the device around

That's it. No tutorial needed—the game guides you through each step.

Resources & Community

Ready to Play?

Gather your friends, open the game, and discover who's the ultimate bluffer.

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