Ghost data used for reproducing a game process executed by user operations are transmitted from game apparatuses to a data management apparatus. The data management apparatus stores the received ghost data, according to a definition of a database in which score sections are defined based on a value represented by score data, and a maximum registration allowable number of users for which the ghost data are registered is defined for each of the score sections, or is defined so as to be the same among the score sections. The data management apparatus transmits, when a ghost data distribution request is received, the ghost data for at least one user for which the ghost data is registered so as to be associated with one of the score sections, the scores section being associated with the score data included in the ghost data distribution request, to the one of the game apparatuses.