Contact

The quickest way to reach us is by email: [email protected]. We read every message.

What to include

• A size looks wrong: tell us the object and, if you can, a source for the number you expected. Check the source linked in the reveal and on the sources page first – many animals vary a lot between individuals.
• Ideas for new objects: animals, planets, buildings, vehicles, anything with a size that surprises people.
• Bugs: what happened, the date of the puzzle, and the device and browser you were using.
• Press, schools and partnerships: we're happy to hear how you use the game.

Looking for quick answers? Try the FAQ or the how to play guide.