another way to categorize variations is whether they are "direct" or "indirect". the direct games are those whose players are opposed face-to-face in different sides of the court, which is sometimes divided by a net; the indirect games are those with a wall where both teams throw the ball from a shared court. the traditional variations of "pilota valenciana" are direct, even though recently some indirect games ("frontó" and "frares") have been introduced based on the basque pelota.