Objective: Your goal is to fill every square on the game board by drawing a line through each one. A level is complete once all squares are colored in. You can backtrack to adjust your moves, but the ultimate aim is to fully fill the board.
Controls:
Gestures or Mouse: To draw a line, simply swipe across the screen (on mobile devices) or click and drag the mouse (on a PC) over the squares. The line will follow your movement, coloring each square it passes through.