Disclosed herein is a smartphone cover module with an embedded game controller. The smartphone cover module includes a smartphone cover provided to protect a surface of a smartphone, with a through hole formed to expose the surface of the smartphone. A direction button is formed on the through hole of the smartphone cover and made of a conductive material. A direction-change support is formed into a shape of a pole that extends downwards from a central portion of a lower surface of the direction button, and spaces the direction button apart from the surface of the smartphone. A button restoring pad connects the direction button or the direction-change support to the smartphone cover, and is formed into a shape of a pad made of an elastic material, thus restoring the direction button from an inclined state to an original state.