The concept is simple; three lines rotate individually at user defined speeds, drawing geometrical patterns.
See what you can create, and feel free to share!
To change the speed of rotation, click on a number and change it.
Press Space to clear the screen.
Click anywhere and hold to draw.
Hold the mouse mouse down, alt+tab to an overlapping window, switch back to the site window and open a new tab (without moving the cursor over the game).
This allows you to draw long shapes while doing something else.