Players paint the big picture in real time, but each can only paint one pixel at a time. You can team up with other players to make the drawing bigger. Paint over the pixels of other teams and protect your part of the canvas.
With the left mouse button pressed, move around the canvas, zoom in and out using the mouse wheel. Select a color from the palette and color any pixel by double-clicking the LMB. A pixel can be painted every 3 seconds.