Who's bluffing?

Ten questions. Stake how sure you are. Being sure only pays when you're right.

Every answer comes with a source, so you learn as you play.

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Then the reveal

At reveal time the post shows the answer with its source, how the room split, the top five, and the bluff of the day.

Pick a pack

Thirteen packs, from geography to Congress, at three difficulties. The link remembers your pick, so you can dare a friend to the same pack.

Normal: famous things, some close calls.

19,000+ questions, each with a source

Both answers link to their source, and a question that looks wrong can be reported right under its answer.

  • Which is larger by area: the United States or India?
  • Which country has more people: the United Kingdom or Spain?
  • Which came out first: Wikipedia or Grand Theft Auto V?
  • Which came first: ChatGPT (released) or Anthropic (founded)?
  • Which company was founded first: OpenAI or Google?
  • Which came first: Anthropic or Nvidia?
  • Which is higher: Mount Everest or Mount Rushmore?
  • Which has the bigger diameter: the Moon or Earth?
  • Which came first: the Airbus A380 or the Concorde?
  • Which is taller: the Eiffel Tower or the One World Trade Center?
  • Which is farther from the Sun: Jupiter or Venus?
  • Which came first: Google Translate or Claude?
  • Which is older: Colosseum or Statue of Liberty?
  • Which is larger by area: Lake Ontario or Lake Baikal?
  • Which was founded first: Harvard University or Yale University?
  • Which language has more native speakers: Japanese or English?
  • Which is longer: the Nile or the Danube?
  • Which melts at a higher temperature: gold or tungsten?
  • Which is taller: Taj Mahal or Colossus of Rhodes?
  • Which was first climbed earlier: K2 or Mount Whitney?
  • Which is larger by area: Argentina or Australia?
  • Which country has more people: Germany or Cape Verde?
  • Which came out first: Facebook or TikTok?
  • Which came first: ChatGPT Atlas (launched) or OpenAI (founded)?

Get started

Play in the browser, or add one question a day to your Discord server or Slack workspace.

Or play with others in our Discord