BorderDetect

BorderDetect asks you to separate thick outlines from thin ones. Multiple black shapes appear with either thick or thin borders, and you score by tapping only the thick-border targets. Thin-border taps or timeouts count as mistakes, and three mistakes end the game. As scores rise, thick and thin strokes grow closer, more shapes crowd the field, and round timers shrink. Scan stroke weight first, ignore fill and silhouette alone, and clear every thick target before time runs out. The game becomes a careful outline-weight drill as border contrast keeps narrowing.