Patent ID: 7950991

Claim:
A game performing method for executing a sports game on a game machine having a controller and a display, in which teams formed of a plurality of characters play against each other while alternating an opponent team during a virtual competition period for a ranking of the teams during the competition period, the teams consisting of a team operated by a player and a team automatically controlled by computer control, the method comprising: changing an ability parameter value which is set to each of the characters according to a proceeding of the game; selecting automatically by computer control a plurality of trade-intended teams which trade characters, out of the plurality of teams, the trade-intended teams which are computer controlled teams; automatically selecting by computer control a trade-intended character among the characters belonging to the trade-intended team and trading the trade-intended character between the trade-intended teams by performing a negotiation between the computer controlled trade-intended teams based on each trade-intended team's requirement of a category of an ability parameter of the character, the trade-intended character does not satisfy a demanded ability value condition of the trade-intended team, the demanded ability value condition being a condition demanded for each team's requirement of the category of the ability parameter of the character among a plurality of ability parameters; and outputting the game on the display.