Name a place. The more obscure your answer, the deeper your worm digs.
Estimania
A fun, 2-minute daily estimation game. Guess the numbers behind five interesting real-world facts and see how good your intuition really is over your morning coffee.
What is Estimania?
Estimania is a free daily estimation game that challenges players with five numerical trivia questions spanning science, geography, history, and sport. Each puzzle appears once per day, and players guess the answer as closely as possible. A new puzzle is released every day at midnight UTC.
How to play Estimania
Read each question and enter your best numerical guess. Scoring ranges from 0 to 100 per question, based on how close you are on a logarithmic scale — being off by a factor of 10 scores zero, while a perfect guess scores 100. After five questions, your total out of 500 is revealed along with your leaderboard rank.
Tips & strategy
- Think in orders of magnitude rather than exact figures, because log-scale scoring rewards the right ballpark.
- Break down Fermi-style questions into smaller, reasoned estimates rather than trying to recall a precise number.
- Use known reference points (like populations or typical measurements) to anchor your guess.
- Remember that being off by 10× scores zero, so avoid wild guesses and aim for a reasonable range.
- Take advantage of the fact that the game doesn't require exact answers; it's about developing a sense of scale.
Frequently asked questions
Is Estimania free to play?
Yes, it's free and doesn't require any sign-up.
How often does a new puzzle come out?
A new puzzle is released every day at midnight UTC.
Can I play on multiple devices?
Yes, after completing your first puzzle you can generate a recovery code to link a second device, keeping your scores and leaderboard rank in sync.
How is my score calculated?
Each answer is scored on a logarithmic scale: a perfect guess scores 100, and being off by a factor of 10 scores 0. Proportional errors are treated symmetrically.
Can I submit question suggestions?
Yes, you can submit a question suggestion through the site's feedback option.
Where to play
Play Estimaniaestimania.app · free, new puzzle daily
Keep your curiosity going
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