Steel Diver 3D Nintendo 3DS Steel Diver was originally a tech demo for Nintendo DS; it has since been redeveloped for Nintendo 3DS. Steel Diver is a 3D action game in which the player takes control of a submarine and guides it through three different types of stages: Missions, in which the player navigates an obstacle course and must get the submarine to complete certain objectives; Periscope Strike, in which the player uses the motion sensors of the Nintendo 3DS to locate enemy ships.