To improve interest in a game appropriately based on input of an instruction by a player.

A performance mode of a predetermined performance, such as a notice pattern, is determined at a determination ratio according to a variable display result. A predetermined performance of a different performance result is executed according to the variable display result and a detection result of input of an instruction by performance control according to such a notice pattern, a push operation count value, and the like. When a performance level updated based on a detection result of input of an instruction, for example, under execution of such a performance satisfies predetermined performance change conditions, a determinable notice pattern, or the like is changed by addition or substitution of a new notice pattern.