Size It Up is a free online puzzle game that challenges your spatial sense by asking you to guess the true size of real-world objects! It provides visual comparisons from the size of a blue whale to a bus to the surface area of geographical locations. Size It Up takes the dry idea of measuring and turns it into a visual estimating experience that is simple and full of surprises.
Each round of the game follows these steps:
Observe the black silhouette on the screen. This object is fixed at its standard size, with its actual dimensions serving as a reference point.
Resize the white silhouette next to it to match the scale of the reference object. You can drag the corners or zoom in and out to get a better perspective.
Press the confirm button to reveal the red overlay representing the actual size. The screen will immediately display your accuracy percentage and the score achieved.
Complete a series of 5 puzzles to receive a summary scorecard; you can also copy your results to share with friends without revealing the answers.
Daily Challenge: A shared set of 5 puzzles available daily to the entire global player community.
Unlimited Mode: A practice mode with no limits on attempts, designed for players who want to hone their visual estimation skills.
Geography Mode: A specialized mode for geography and landmasses, where you compare the surface areas of countries, states, or large lakes.
Runs directly in your desktop or mobile browser—no account creation or installation required.
Controls: On a computer, drag the corner with your mouse to resize, use the arrow keys for fine-tuning, and press Enter to lock in your answer; on a mobile device, use pinch-to-zoom gestures.
Mental Measurement Rule: Do not try to remember exact measures like the number of square meters, the exact lengths, etc. Instead, you should mentally estimate how many times the black reference object fits inside the white target object.
Beware of extreme scales: things that are very large or very little can readily fool the eye. Make sure the breadth and overall volume are right before you choose anything.
If you enjoy ragdoll-style games: Ragdoll Sandbox.
