The game starts by placing 1 color each of the 4 colors in the middle, so that they form a square. The first player then starts by placing a ball of his color at the top of the field, next to the balls already there. If balls become "trapped" between this color, i.e. there is a ball of that color at the beginning and end of a line (possible in all directions), then all balls in between may be rolled over to the same color. Roll it! The game continues in a clockwise manner until the board is full. The person who now has the most balls of his color visible wins.