Spectator team sports are now being studied more frequently by those who have, or wish to have, responsibility of the smooth functioning of club sports. Technical directors, managers, trainers, and individuals in other similar roles look for “formulas” that can help them to obtain good qualifying results and present in-person spectators and the television and general audience with an interesting and visually stimulating show. Recently, the “game system” concept has become popular, providing a small set of formulas of attack and containment capable of giving unique quality or a distinct identity to a team. Because terms like “game system” are often repeated and circulated by word of mouth without precise knowledge of what they really mean, we attempt to establish a definition for this term. This definition, in turn, will provide the basis for a methodology for neutralizing the problems that impede or hinder the achievement of the objectives sought through the development of the game.