Estimate the real-world size of objects, animals, structures and astronomical bodies, then see how close you were. A quick browser game about scale, estimation and orders of magnitude.
Just How Big? — Scale It was submitted to SlowDen by Alex / Just How Big?. SlowDen did not make this game - it is published here from the developer's own submission, added on 2026-09-24. It runs in the browser with no download, no install and no sign-up.