THE SIZE IT UP LIBRARY
Choose a world to measure.
Browse the full Size It Up game library by category. Every collection opens a playable daily challenge and an unlimited mode for open-ended practice.
All categories
9 collectionsMixed
A rotating mix of animals, geography, vehicles, landmarks, space, and everyday objects for a fresh scale challenge every day.
Examples Tyrannosaurus rex · Triceratops · Spinosaurus
Daily challenge · Unlimited mode →Animals
Compare the scale of animals in this size guessing game, from dinosaurs and familiar wildlife to creatures that are much smaller than you expect. Use a known reference to picture their real length.
Examples Tyrannosaurus rex · Triceratops · Spinosaurus
Daily challenge · Unlimited mode →Geography
Turn geography into a size comparison game. Estimate the span of countries, US states, and lakes from different parts of the world on one visual scale.
Examples Zimbabwe · Zambia · Yemen
Daily challenge · Unlimited mode →Vehicles
Put cars, buses, aircraft, ships, and other vehicles on the same visual ruler. Familiar machines become surprising when they share one real-world scale.
Examples Bus · London Double-Decker Bus · Family Car
Daily challenge · Unlimited mode →Dinosaurs
Estimate the length of prehistoric animals against a known reference and make fossil-era scale feel tangible.
Examples Tyrannosaurus rex · Triceratops · Spinosaurus
Daily challenge · Unlimited mode →Space
Stretch the scale from moons and planets to objects at the edge of imagination. Space comparisons make every unit feel enormous.
Examples Sun · Jupiter · Saturn
Daily challenge · Unlimited mode →Everyday Objects
Start with things you see every day: doors, beds, tools, and household objects. Familiar items give your eye a useful baseline for every other round.
Examples Basketball · Tennis Ball · Football Goal
Daily challenge · Unlimited mode →Insects
Compare body length and wingspan across the tiny world of insects, where a few millimetres can change the whole visual impression.
Examples Tyrannosaurus rex · Triceratops · Spinosaurus
Daily challenge · Unlimited mode →Landmarks
Estimate the height or length of landmarks you may recognize instantly. Towers, bridges, monuments, and natural wonders become a measurement challenge.
Examples Eiffel Tower · Statue of Liberty · Big Ben
Daily challenge · Unlimited mode →