How to play Speedroo, the daily speed guessing game

Each day Speedroo gives you 5 real things, from a garden snail to a spacecraft. Slide along the scale (or use ÷2, −, + and ×2) to the speed you think each one goes, then lock it in to see the real speed, a short fact and how it compares with a red kangaroo at full tilt.

Scoring is by ratio, not by difference. Within 10% of the real answer scores 100 points, twice too high or too low scores about 70, and 10 times off scores 0. The best possible daily score is 500.

FAQ

What kinds of questions are there?

How fast is a cheetah? How fast does the ISS orbit? How fast is a Formula 1 car? How fast does a snail move? Every day mixes animals, sport, cars, trains, planes, weather and space, so it works as a speed quiz and an estimation game. The answers to every question are in all speeds.

When does a new Speedroo puzzle come out?

A new set of 5 arrives every day at midnight in your local time.

Is Speedroo free?

Yes. Speedroo is free to play in your browser, with no account or download. Your streak and best score are saved on your own device.

Why is it called Speedroo?

Guessroo's mascot is a kangaroo, and every answer is also compared with a red kangaroo, so you can feel the speed.

I think an answer is wrong.

Tell us at [email protected] and we will check it.