Computer system and program

[0070]A first embodiment of the present invention is described next with reference to a simulation type baseball game in which baseball players are registered in a roster using trading cards serving as objects.

Configuration of Game System

[0071]FIG. 1 illustrates an exemplary configuration of a game system according to an embodiment of the present invention. According to the present embodiment, the game system includes a player terminal, such as a personal computer 1200, a smart phone 1300, or a mobile game machine 1400, and a server system 1100 formed from a computer system and connected to the player terminal via a communication line 1. The player terminal and the server system 1100 communicate data required for playing a game with each other.

[0072]The communication line 1 serves as a communication path through which data can be exchanged. That is, examples of the communication line 1 include a dedicated line (a dedicated cable) for pier-to-pier connection, a local area network (LAN)