A display device according to an embodiment of the present disclosure may include a base, a stand bar extending upward from the base in a vertical direction, and a head having a display on a front side and having a pair of long sides and a pair of short sides on a peripheral portion, the head being pivotable between a landscape mode in which the long side is in a horizontal state and a portrait mode in which the long side is in a vertical state, wherein the head may include a processor configured to determine whether a rotation unlock condition of the head is satisfied, and when the rotation unlock condition of the head is satisfied, rotate the head about a rotation axis as external force is applied to the head.

An exterior panel for attachment to a surface of a housing includes: a curved profile that includes an inner surface and an outer surface; and a plurality of projecting portions extending out of the inner surface of the exterior panel, where each of the projecting portions is configured to fit in corresponding attachment holes that is formed on the surface of the housing of the game device, and the plurality of projecting portions, when fit into the corresponding holes, provide a separation between the surface of the housing of the game device and the inner surface.