After pressing the Green Flag, enter how many lines you want to create (limit is 300). After that, the up arrow increases the speed, and the down arrow decreases it. Space randomizes the colours of the lines being drawn. MOBILE: Tap the top of the screen to increase speed. Tap the bottom of the screen to decrease speed. Tap the center of the screen to randomize colours.
1/19/2025 Update - Added mobile support.