Summary:
U.S. Patent No. 7,887,403 (the '403 Patent) describes an RPG battle system where player characters and enemies share magic points (MP). Traditionally, in an RPG every character is given their own MP. MP can be used for magic attacks that may have different effects than a standard attack. When a character no longer has any MP, that character may not cast any magic attacks. The '403 Patent describes a battle system where both sides share MP. Sharing MP could change a player's strategy in battle. Typically, players try to maintain their MP so their characters can keep performing magic attacks. With shared MP, a player may find it more beneficial in some situations to entirely drain the MP so an enemy character cannot cast any magic attacks of their own.


Abstract:
In a game system, a PC control unit controls an attack on an enemy character by a player's character. An enemy character control unit controls an attack on the player's character by the enemy character. An MP management unit stores, in an MP storage, a current value of a magic point indicative of the power required for a magic attack and manages an increase and decrease in the current value of the magic point. The magic point stored in the MP storage is used commonly by the player's character and the enemy character. When the player's character attacks the enemy character and the enemy character attacks the player's character, the MP management unit subtracts a value required for the attack, from the current value of the magic point.

Illustrative Claim:
6. A game system comprising: a player's character control unit which controls an action of a player's character in a battle between the player's character and an enemy character; an enemy character control unit which controls an action of the enemy character in the battle; and a first point management unit which stores, in a first point storage, a current value of a first point indicative of a power required for achieving a specific ability in the battle and which manages an increase and decrease in the current value of the first point; and a second point management unit which stores, in a second point storage, a current value of a second point indicative of a vitality of the player's character and the enemy character and manages an increase and decrease in the current value of the second point, wherein when one character attacks on the other character, said second point management unit subtracts a predetermined value, as a damage caused by the attack, from the current value of the second point, said first point management unit adds a value calculated according to the damage caused by the attack, to the current value of the first point, the first point stored in the first point storage is shared by the player's character and the enemy character, and wherein when the player's character exercises the specific ability or the enemy character exercises the specific ability, said first point management unit subtracts a value required for the exercise of the specific ability, from the current value of the first point; and wherein when an action has been executed by a first character and thereafter the first character is attacked by a second character during a time duration until the action by the first character is completed, said first program code module which controls the action of the player's character and said second program code module which controls the action of the enemy character cancel the action by the first character and when the first point in the first point storage has been reduced by the action by the first character, said first program code module which controls the action of the player's character and said second program code module which controls the action of the enemy character restore the value by adding an value equivalent to the amount subtracted.


Researched By: Andrew F. Thomas