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Size comparison game

How big is a blue whale next to a bus? Resize the red shape until it looks right, then see the real answer.

Try five perspectivesA short journey from everyday life to other worlds.

How to play

  1. The blue shape is drawn at a known size. Its real measurement is printed next to it.
  2. Drag the red shape or the empty board left or right until its size looks right beside the blue reference. Release to bring an oversized shape into view.
  3. Lock it in. Your red guess stays visible over the actual-size silhouette, so you can compare them directly.
  4. Each round is worth up to 100 points. Five rounds make a daily puzzle, with a new one at midnight.

Scoring

Get within about 3% of the reference scale to earn 100 points. The score falls as the error grows, reaching 0 at three times the reference scale or one third of it. Double and half earn the same score. Maps are scored by linear scale, while the displayed percentage compares areas.

For maps, the percentage compares areas. Scores use linear scale: doubling the width and height makes four times the area.

  1. 100+3%
  2. 91+10%
  3. 79+20%
  4. 52+50%
  5. 23×2
  6. 0×3

What you will compare

Animals27Dinosaurs and prehistoric life11Planets and moons18Countries and states41Everyday objects18Sports11Vehicles and craft10Landmarks and towers17

Comparisons worth a look

The Moonvs AustraliaCeresvs TexasBlue whalevs City busTyrannosaurus rexvs Mid-size sedanGiraffevs Adult humanRMS Titanicvs Boeing 747-8Hindenburg airshipvs Boeing 747-8Burj Khalifavs Eiffel TowerGreat Pyramid of Gizavs Statue of Liberty

Questions

Is it free?

Yes. There is no account and nothing to install. Your streak and history are stored in this browser only.

When does the daily puzzle change?

At midnight in your own time zone. Everyone gets the same five comparisons on the same calendar day.

Where do the sizes come from?

We distinguish published dimensions, estimates and selected examples. Animal sizes vary; selected examples are not species-wide averages. The sources page lists every object, and Five perspectives includes measurement notes and direct primary references.

Why do country shapes look different from a world map?

Each country is drawn with its own equal-area projection, so its size on screen matches its real area. Common world maps stretch places far from the equator.

Can I play more than five rounds?

Yes. Unlimited mode has no daily cap and lets you choose a category. Past daily puzzles are open too.