PURPOSE: To enable the play range of a game or the like to be widened by arranging an ON/OFF-signal generating section with a sensor for sensing sound, light, heat, wave, and the like, and a motor for working controlled with signal generated from the ON/OFF-signal generating section.

CONSTITUTION: When a sensor switch 9 is turned ON according to a fixed or more sound volume, then the driving circuit of a motor 8 is worked, and only for a fixed short time, a monkey toy 4 ascends along an ascending bar body 1. However, the sensor switch 9 is not worked according to a fixed or lower sound volume, and so the monkey toy 4 is not moved under the volume. Accordingly, by calling the monkey toy 4 repeatedly with the loud voices of several persons one by one within each specified time, the monkey toy 4 ascends little by little, and they can compete with each other enjoying the game for the positions of the levels of the monkey within each specified time. When the sound volume is reduced on the way, then the monkey toy 4 descends. Besides, even if a following voice is generated on the toy within a fixed time after the monkey toy 4 starts ascending, the sensor switch 9 is not turned ON, and so the voice must be generated timely. In this manner, in relation to uncertain elements, the game is to be a very interesting one.