A gaming device includes a self-stabilizing module including a first portion and a second portion, a controller assembly disposed at the second portion, a motion sensor, an operation processing module, and a display screen disposed at the first portion. The operation processing module generates a frame signal to the display screen according to a program. The controller assembly and the second portion rotate about at least one self-stabilizing axis relative to the first portion when the self-stabilizing module is activated. The motion sensor generates a control signal due to the relative rotation of the first and second portions. The operation processing module generates another frame signal corresponding to a movement posture of the controller assembly relative to the display screen according to the control signal and the program. The display screen is not located on a movement track of the controller assembly. A gaming controller is also provided.