Only one color per line is a unique puzzle game where players are presented with a canvas containing multiple colored squares, arranged in a seemingly random pattern.
The objective of the game is to go through the lines of colored squares, one line at a time, and select a single color to highlight. Once each line has been highlighted, the player's goal is to isolate the lines where choosing that single color has led to consecutive lines being colored.
The player must manage their selection carefully, as wrong choices can make it increasingly difficult to find consecutive lines of the same color. The game does not require any downloads or registration, allowing players to engage in its challenging puzzles directly in their web browser.