Start with the task
How to play Estimania
- Press Play Today’s Puzzle. Read both the question and the unit beside the answer field.
- Enter a positive estimate at the scale the question requests. Use rough facts and comparisons; the optional calculator can help with arithmetic.
- Submit to see the reference, explanation and points. Continue through all five questions to see the daily total.
Controls: Type a number; an optional calculator is provided.
Sound: No sound needed.
Read the feedback
What your Estimania result means
The usual score depends on the ratio between your estimate and the reference: 100 × (1 − |log₁₀(estimate ÷ answer)|), with a floor of zero. An exact estimate earns 100; being off by a factor of ten earns zero. Five questions give a total out of 500. Percentage questions use an odds-based rule, and some narrow-range questions use a stricter scale.
What to look at after a guess
Check the factor you missed by, not just the absolute numerical difference. Guessing 200 for an answer of 100 and 50 for that same answer both miss by a factor of two and score about 70 under the usual rule. The explanation and source tell you what the reference represents, including estimates with no single perfectly precise answer.
Common mistakes and what to try
Entering the full amount when the field asks for millions
If the unit says million USD, enter the number of millions. Recheck the field label before submitting.
Using additive distance to judge the main score
A miss of 100 means something different around an answer of 200 than around an answer of a billion. The usual rule is proportional.
Applying the usual ratio rule to every question
Percentage and narrow-range questions can use different scoring. Read the result’s explanation rather than assuming one formula covers every case.
How is Estimania like Perceptle?
Choose it for back-of-the-envelope reasoning and deciding whether an answer is in the right order of magnitude.
It asks about facts and scale. The main score compares ratios, rather than measuring the visible position, angle or rhythm you judged.
Compare the tasks, daily formats and controls of all ten games →