A network game system in which a plurality of players participates, each of the players who respectively use a plurality of terminal apparatuses manipulating player characters to participate in a game, the game being a two-dimensional game which displays a part of the two-dimensional game, the network game system comprising:
- a first receiver that receives movement information transmitted from each of the plurality of terminal apparatuses;
- a central processor that progresses with the game on the basis of the movement information received by the first receiver;
- a first transmitter that transmits game information according to a progress state of the game progressed by the central processor to at least one of the plurality of terminal apparatuses;
- a display;
- an input;
- a second receiver that receives the game information;
- a graphics processor that causes the display to display an image based on the game information, and
- a second transmitter that transmits movement information on movement of a player character according to a player input by a player from the input,
- wherein the central processor:
- determines whether the player input by the player from the input includes a predetermined input instruction for the player character;
- and
- makes the player character a special player character showing a predetermined special movement state when the player input includes the predetermined input instruction, and
- the graphics processor:
- causes the display to display a normal image based on the player character of the player who uses the terminal apparatus and a progress state of the game in a case where the special player character showing the special movement state does not exist;
- and
- causes the display to display a special image based on the special player character showing the special movement state and the progress state of the game in a case where the special player character showing the special movement state exists, the special image showing a region with a given area of the two-dimensional space specified based on a position of the special player character.