Well, actually if you do that you’ll be infringing a patent. I love reading patents, but I rarely understand them. This one I do, since it uses words I understand, like ‘roofing nails’ and ‘elastic bands’:
A board game for at least two individuals to play. The board game is a modified form of soccer that uses roofing nails pounded into a flat surface as “players,” a marble as a soccer ball, and a pair of Popsicle sticks as shooters. In addition, an elastic band is wrapped around into a rectangular fashion to have a rectangular-shaped playing field.