About Guessit.io

Guessit.io is a collection of fun guessing games where you test your knowledge across different categories. Each game challenges you to estimate numbers, from Lego piece counts to distances between cities. The closer your guess, the more points you score :D

The site is designed, written and maintained by one independent developer, TheAtilaDev. Every question list is put together by hand, checked against public sources and expanded regularly with new items. There are no accounts, no paywalls and nothing to install. Ads help cover the cost of running the site.

The games

• Guess The Weight: hundreds of animals, objects, vehicles and landmarks. How heavy is each one, in grams?
• Guess The Pieces: more than 200 real LEGO® sets. How many pieces are in the box?
• Guess The Words: about 100 famous songs from around the world. How many words are in the lyrics?
• Guess The Distance: 100 pairs of world cities. How many kilometres apart are they?

How to Play

• Choose a game mode from the menu.
• Read the clue and enter your best guess!
• Points are awarded based on how close your guess is, the closer, the better :)
• A perfect guess earns the maximum 1000 points.

Scoring is based on how far off you are in percent, so small and large answers are judged fairly. The full formula and some strategy are explained in How to Get Better at Estimation Games.

Where the data comes from

• Weights: typical published values from encyclopedias, manufacturer specifications and natural history references.
• LEGO® sets: official piece counts, referenced on Brickset.
• Songs: word counts from the full published lyrics. Videos are embedded from YouTube.
• Distances: straight-line (great-circle) distances between city centres.
• Images: weight and city pictures come from Wikipedia / Wikimedia Commons and belong to their authors.

Mistakes happen. If an answer looks wrong to you, please get in touch. Corrections are always welcome.

Recent updates

• October 2026: new guides under every game, an articles section, and a privacy policy.
• March 2026: new main menu and better phone support.
• March 2026: Guess The Words (songs) and Guess The Weight added, plus many more LEGO sets and weight items.
• March 2026: Guess The Pieces (LEGO®) and Guess The Distance added.
• March 2026: Guessit.io launched.

Contact me

• Email: [email protected]
• Discord: theatila
• Support: paypal.me/theatiladev

Legal

LEGO® is a trademark of the LEGO Group, which does not sponsor, authorize, or endorse this site. All LEGO® set data is used for informational and entertainment purposes only :)

Read the privacy policy to learn how ads, cookies and embedded content work on this site.