To provide an operation input devide for a game device capable of attracting interest of a player by providing a new operation feel to the player.

This operation input device comprises a holding part 8 formed in the form of a bow, a string 9 stretched at both ends of the holding part 8, and a tension gauge 13 to detect tension of the string 9. A player P grasps the holding part 8, and pulls the string 9 toward himself, thereby a new input action simulating an action of shooting a target by a bow and arrow can be conducted.