A network game system includes a server apparatus and a plurality of video game apparatuses connected to the server apparatus. A party includes player characters of a plurality of players. When the party battles with an opponent character, the server apparatus simultaneously transmits movie playback information to each video game apparatus for starting playback of a movie. Each of the players can skip the movie at a desired timing. A screen is displayed on each video game apparatus that has skipped the movie until the battle starts. When information is received from each video game apparatus that indicates playback of the movie has ended, the server apparatus simultaneously transmits battle start information to each video game apparatus.