Which is bigger: a Tyrannosaurus or a city bus? Mount Everest or the Great Pyramid? In this visual estimation game, you compare the real sizes of two objects. Move the bottom ruler to change the scale until the proportion looks right, then lock in your answer. The game reveals the real ratio and your accuracy. Discover a huge variety of comparisons featuring everyday objects, animals, vehicles, geography, landmarks and space. Accurate and unusual answers can trigger reactions and short facts. Improve your results and see how good your sense of scale really is.
Desktop: drag the bottom ruler left or right. You can also scroll over it or use the arrow keys while it is focused. Click the arrow button or press Enter to submit your answer. On the scene, objects can be dragged; the mouse wheel zooms the camera, and right- or middle-button drag pans it. Mobile: swipe the bottom ruler; one finger moves objects, while two fingers resize a selected object or zoom the scene. After the result is shown, tap “Next level”.