PROGRAM, COMPUTER SYSTEM, AND SERVER SYSTEM

To make it possible to provide an appropriate advice for a player when a rigidity time is caused by occurrence of an action exchange in which actions are mutually exchanged between its own character and an opponent character.SOLUTION: A computer system detects occurrence of an action exchange of a mutual exchange of actions including a first action performed by one of a player's character and an opponent character and a second action performed by the other. When a rigidity time related to an action performed by the player's character (hereinafter referred to as "a self rigidity time") is shorter than a rigidity time related to an action performed by the opponent character on the basis of a first rigidity time based on the first action, a second rigidity time based on the second action, and a time difference between the first rigidity time and the second rigidity time, the computer system shows the player a recommendation candidate action recommended to be performed after a lapse of the self rigidity time.SELECTED DRAWING: Figure 5 【課題】自キャラクタと相手キャラクタとが互いにアクションを交わすアクション応酬が発生して硬直時間が生じた場合に適切なアドバイスをプレーヤに提供できるようにすること。【解決手段】コンピュータシステムは、プレーヤキャラクタ及び相手キャラクタのうちの一方が第１のアクションを行い、他方が第２のアクションを行うことによる互いがアクションを交わすアクション応酬が発生したことを検出する。第１のアクションに基づく第１の硬直時間と、第２のアクションに基づく第２の硬直時間と、当該第１の硬直時間と当該第２の硬直時間との時間差と、に基づいて、相手キャラクタが行ったアクションに係る硬直時間よりもプレーヤキャラクタが行ったアクションに係る硬直時間（以下「自硬直時間」という）の方が短い場合に、当該自硬直時間の経過後に行うことを推奨する推奨候補アクションを、プレーヤに提示する。【選択図】図５