Patent ID: 8827788

Claim:
A server device configured to be connected with a player terminal configured to display a game screen including a character arrangement area including a plurality of unit areas through a network, and to execute a battle game played by a player using a plurality of characters arranged corresponding to the unit areas in the character arrangement area, the server device configured to: store a player character group including the plurality of characters to be arranged in the character arrangement area; select a special area to be highlighted on a game screen displayed in the player terminal during the battle game from among the plurality of unit areas; arrange a character selected from the plurality of characters configuring the player character group in the special area according to an operation by the player; and during the battle game, calculate a difference value between a parameter value set to the player character group and a parameter value set to an enemy character value that is to be an opponent, and determine whether the calculated difference value is greater than or equal to a value, and configure a character arranged in the special area to receive a special chance during the battle game only when it is determined by the battle processing unit that the difference value is greater than or equal to the value, the special chance associated with an attack different from ones of the plurality of characters arranged in areas other than the special area, wherein attack processing of the character arranged in the special area causes the attack associated with the special chance to be invoked.