Abstract: A non-transitory computer readable medium stores a program causing a computer to execute: a process for tying possession information to a game medium that satisfies a possession condition, among at least one game medium for use in a predetermined game; a process for executing a target game in which any of the at least one game medium is set as a specific game medium; a process for extracting, as at least one target game medium, a game medium that is set as the specific game medium in the target game and to which the possession information is tied; a process for deciding an applicable effect value on the basis of the at least one extracted target game medium; and a process for granting a reward to a player on the basis of the applicable effect value when the target game is executed.