To provide an information processing device capable of enhancing convenience of a user using the information processing device by considering a dominant hand, habit, or the like, of the user without imposing on the user a task of inputting information of the user's dominant hand, habit, the like. In a case where it is determined that a user's designated position is included in a determination area corresponding to an object, the object is moved in accordance with movement of the designated position. In a case where at least one of one object and another object moves, processing relevant to the objects is executed based on a result of collision determination executed with respect to the objects. A second processing executing unit (64) executes predetermined processing based on a positional relationship between one object or one designated position and another object or another designated position in a case in the past in which it is determined that the one designated position is included in the determination area corresponding to the one object and the other designated position is included in the determination area corresponding to the other object.