
100 of Us
Of 100 people in the world, how many? One guess a day.
134 daily estimation games in your browser, each with a page on how it plays, when it resets and where to play it.

Of 100 people in the world, how many? One guess a day.

Hear the gap between two beeps and tap it back, ten steps a day.

Guess what a named flight or hotel stay costs, in three tries.

Resize a plane or airport against a known object until the scale looks right.

Watch objects pour into a jar and guess how many, five times a day.

Guess the day's angle in degrees in four tries or fewer.

See an angle for three seconds, then rebuild it from memory on a dial.

Find the day's mystery angle, from 1 to 359 degrees, in six tries.

Name the day's angle to the exact degree in four guesses.

Guess what real auction lots sold for, round by round.

Slide the support under an uneven shape to where it will hold level, five shapes a day.

Rotate and drop the day's odd shape so it balances on a point, in as few attempts as possible.

Look around a US neighbourhood and guess how it voted in 2024.

Guess a famous company's founding year, revenue and valuation.

Five sports number questions a day, each an at-bat: the closer your estimate, the bigger the hit.

Five number questions a day: answer with a range, and tighter scores more.

Watch a short walk, then say where it started, which way home lies and where you ended up.

Five real-world numbers a day: bet a range, not a guess, and keep it tight.

Cut each shape exactly in half with a single line.

Cut a fading shape in half with one straight line, five times a day.

Match each target artist with one who is just as popular.

Guess how a real total splits into slices, then see the true shares.

Guess how many pieces are in the day's LEGO set.

Aim from one capital to another and guess how far it is.

Aim from one U.S. state capital to another, by bearing and distance.

Chain five bearings between capitals, each starting where the last one landed.

Click the centre of mass of the day's shapes, one guess per round.

Five historical events a day: slide to the year each one happened and score by how close you land.

Five real-world numbers a day: type your best estimate and see how close you got.

Five real-world numbers a day, 25 seconds each: pick a guess and a range, and tighter ranges score more.

Guess what a Costco food product costs, within five percent, in six tries.

See a shelf, a tray or a crowd for a moment, then say how many there were.

Guess what a luxury piece or auction lot cost, in three tries.

One shape, one straight cut, and the closest to 50:50 you can manage.

Guess the starting sticker price of the day's vehicle, in three tries.

See five shapes, then put each back at its size, angle and place from memory: the same five for everyone each…

Experience five durations, then recreate each one from memory: how good is your internal clock?

Guess one country's published average penis length in five tries.

Draw an outline on the US map that holds exactly today's number of people.

Watch the start of a throw, then call where the ball comes down.

Five numbers to estimate each day; the closer you get, the more of 500 points you score.

How many pieces of popcorn in the mug? Three guesses to get close.

Four daily questions: estimate a quantity and a world record, place a date, and solve a cryptic clue.

Five numerical questions a day: slide to your best estimate.

Three estimation questions; every unit you are off comes out of your 100 points.

Three Fermi questions a day: napkin math, one guess each.

Guess the right power of ten for one hard-to-know number a day, in five tries.

Five one-shot tests of your eye each day: count dots, pour a percentage, set an angle, hold for seconds…