Inspect two 3D parts and pick the heavier one—five rounds, one guess each.
Mass uses nominal material densities. Dimensions are rounded to the nearest millimetre. A new game starts at midnight UTC. Progress stays in this browser; clearing browser data removes it.
Same five matchups as the original day. Your first score is saved; archive play doesn't count toward your daily streak.
The first puzzle is today. Come back tomorrow for the archive.
Same five rounds. Who has the better eye?
LinkedIn & Facebook: paste your copied score into the post.