. . . . "The DualShock (trademarked as DUAL SHOCK) is a line of vibration-feedback gamepads by Sony for PlayStation consoles and devices. The DualShock was introduced in Japan in late 1997, and launched in the North American market in May 1998."@en . "DualShock 3"@en . "DualShock 2"@en . . . . "DualShock"@en . "DualShock 4"@en . . .