To improve an interest by varying conversations in a toy simulatingly conversing with a player.

When a walk mode is selected, a controller 30 randomly determines a conversation genre. When the conversation genre is determined to "the number of steps", a toy body 10 obtains the number of steps counted by a vibration detector and selects a conversation pattern number. Alternatively, when the conversation genre is determined to "a time", this toy selects a conversation pattern number according to the lapse time from setting the walk mode. When the conversation genre is determined to "the number of steps and the time", this toy selects a conversation pattern number based on the number of steps obtained from the toy body 10 and the lapse time from setting the walk mode. The controller 30 progresses the simulated conversation according to the appropriate conversation pattern.