[Bocce - Wikipedia](http://en.wikipedia.org/wiki/Bocce) Bocce is traditionally played on natural soil or asphalt courts approximately 20 to 27 metres in length and 2.5 to 4 metres wide, sometimes with wooden boards of approximately 15 centimetres in height surrounding the court. Bocce balls can be made of [metal](/wiki/Metal "Metal") or various kinds of [plastic](/wiki/Plastic "Plastic"). Unlike [lawn bowls](/wiki/Lawn_bowls "Lawn bowls"), bocce balls are spherical and have no inbuilt bias.