A server includes a content storage medium configured to store content data of content usable in different types of games up to a first upper number, and a management information storage medium configured to store valid period information of a right to use an extended function concerning the content data The server, in case that a right to use an extended function is valid, sends the content data to an information-processing device or receives the content data from the information-processing device, and stores the content data in the content storage medium up to a second upper number larger than the first upper number. The server, in case that the right is invalid, performs at least one of transmission of the content data to the information-processing device and reception of the content data from the information-processing device, in a restricted manner as compared with a case where the right is valid.