A game system is provided in which a first game apparatus operated by a first player and a second game apparatus operated by a second player are configured to communicate with each other. The first game apparatus decides a content of a fighting event according to an operation of the first player, and transmits event information related to the content of the fighting event. The second game apparatus receives the event information, and generates the fighting event based on the event information. The event information includes: object information related to one or more objects that are selected from objects of the first player and that fight against an object of the second player in the fighting event; and mission information that is related to a mission assigned for the second player during the fighting event.