Millimemory

How big is a golf ball? How long is a AA battery? How wide is a dollar bill? You've seen these things a thousand times, but could you size them up without a ruler? Millimemory / ミリメモリー is a quick, lively estimation game that tests how well you really know the everyday objects around you. Each round, a Question Card shows a familiar object and the dimension being measured: the diameter of a pool ball, the height of a soda can, the length of a crayon. All players secretly make their predictions at the same time by sliding a Prediction Card in or out of its sleeve until the exposed length matches their guess. No writing down numbers, no conversions; just what your eye and your memory tell you. Then flip the card to reveal the true measurement on the ruler printed on its back. Hold your Prediction Card against it and score based on how close you came.