To obtain favorable bodily sensation in operation in simple constitution by supporting grip parts near both ends of a case which is flat and elongated from side to side and which is operated with both ends held by both hands to be oscillated, and oscillating the case by a built-in driving means.

This controller 10 is the so-called joy pad, which includes a case 11 which is flat and elongated from side to side, a cross-type key switch 12 provided on one side of the upper surface of the case 11, plural operating switches provided on the other side, and an operating switch 14 provided in the center of the upper surface of the case 11. In this case, both end grip parts 15 of the case 11 are so constructed that the inside surface 15a is formed of deformable flexible material such as rubber, silicone or the like, and a driving means 20 and a grip force detecting part 30 are built in the interior thereof. By rotation of a motor 21 of the driving means 20, a guide rack 23 is moved right and left, and a support rod 25 is oscillated about a rotating shaft 15b to transmit the motion to a player.