Game system utilizing network

This game system (1) includes multiple game machines (2A, 2B) connected to a network (5), allows a player of a game machine to select one of multiple selection items in a game prepared in advance, and allows the player to play a game having content reflecting the selected item. This game system is provided with a means (32) for storing relation data for determining whether or not a prescribed connection exists between players, a means (11) for determining the selection state pertaining to the item selected by the players on the various game machines, a means (11, 12) for determining, on the basis of the relation data, other players that have the prescribed connection with the player, and a means (21) which, when the player is selecting between the selection items, presents the player making the selection with the selection state of other players having the prescribed connection with that player.