GutGuesser

How many years would it take to fly to the Sun? How many panels did the classic football have? Nobody knows the exact number. You don't either. Get close.

GutGuesser is the daily estimation challenge. Every day there are four new questions, the same for everyone. Drag the ruler to wherever your gut says, lock in your guess and see where everyone else landed.

• Four new questions every day, one minute to play
• The closer you get, the more you score: nail it for 1,000 points
• See the cloud of everyone's answers
• Keep your streak going day after day
• Challenge your friends and start leagues
• Optional reminders so you never miss the challenge or your streak
• No sign-up needed: play from the first second, make an account only if you want

Trivia from science, history, animals, the human body, space, sport and more. Every answer comes with the fact behind it.