Two or more players draw a small base of circles in their corner of a paper. Each player stands their pencil on its end and slides it across the paper. A new circle is drawn where the line ended, but the previous circle stays in place. If another player's circle is hit, then that circle is scribbled out. Then, the "shooting" player takes another turn. A player wins when all circles of other colors have been scribbled out. Many variants allow for wall-like obstacles where circles stop or pits where if a line crosses it, that circle does not count.