To optimize acquisition of items by a player in a game.

A list TI of recommended items is displayed together with the prices on a display screen to facilitate acquisition of an item. The list TI of recommended items shows weapons NI11, TI12, TI13, TI14, etc. which can be additionally acquired and the prices thereof. The display of the list of recommended items enables a player who is not used to the game to know the timing to acquire an item and the item which can be acquired, and also, the display of the list can maintain proper distribution of items and can keep many players interested in the game for a long period of time. Players can acquire items by the operation such as picking the displayed items.