What is Estimania?
Estimania is a free daily estimation game. It asks five numerical questions across subjects such as science, geography, history and sport, rewarding a sensible order of magnitude rather than pure recall.
How to play Estimania
- Open the day's puzzle and read a numerical question.
- Enter your best estimate.
- Complete all five questions, then read the total out of 500 and the leaderboard position.
Why play Estimania
It is for curious players who enjoy making a defensible estimate and learning whether their intuition was off by a little or by an order of magnitude.
Reading the feedback
Each answer scores from 0 to 100 on a logarithmic scale. A perfect estimate scores 100; an answer that is ten times too high or too low scores zero. Proportional errors are treated symmetrically.
Modes
Daily puzzle: Five questions released at midnight UTC; a completed daily puzzle locks after one play.
Tips & strategy
- Aim for the right scale before worrying about exactness, because the score is logarithmic.
- When a question is a Fermi problem, break it into smaller quantities you can estimate instead of searching for a memorized fact.
Common questions
How many questions are in a daily game?
Five numerical trivia questions.
Can I play the day's puzzle again?
No. Once completed, each daily puzzle locks.
Can I use another device?
Yes. After a first puzzle, the site offers a recovery code to link a second device.