Enemy Zero gun, and a strategy guide. The music is performed by the Michael Nyman Orchestra and Sarah Leonard. "Confusion" is a modification of material from Nyman's previous score, "The Ogre", while the Enemy Zero/Invisible Enemy/Battle theme were modified into portions of Nyman's score for "Man with a Movie Camera". "Laura's Theme," "Digital Tragedy," and "Love Theme" are solo piano works and are included on the EP, "Enemy Zero Piano Sketches", which was released eight months before the complete soundtrack, and two months before the game. "Enemy Zero" received favorable reviews from several publications. "Edge" highly praised the first of the game's
Zero-sum game Zero-sum game In game theory and economic theory, a zero-sum game is a mathematical representation of a situation in which each participant's gain or loss of utility is exactly balanced by the losses or gains of the utility of the other participants. If the total gains of the participants are added up and the total losses are subtracted, they will sum to zero. Thus, cutting a cake, where taking a larger piece reduces the amount of cake available for others, is a zero-sum game if all participants value each unit of cake equally (see marginal utility). In contrast, non-zero-sum describes