PolygonSides challenges you to recognize shapes by their edge count. A target number of sides appears at the top, such as three, five, or eight. Several polygons then appear below, and you must tap the one that matches the target. Tap the wrong shape and you earn a mistake. Three mistakes end the game. Early rounds use clearly different polygons, but higher scores add similar-looking shapes that are easy to confuse at a glance. Count the sides carefully, compare every option, and answer quickly. It is a sharp test of geometry recognition and visual judgment that gets tougher as the screen fills with near matches.