To provide a portable game device and a game board for the same, which are convenient to carry about.

A portable game device 10 includes a game board 12, and a container bodies 16a and 16b. Folds 25a, 25b, 25c, 25d, and 25e are formed in the game board 12 and connections between the game board 12 and the container bodies 16a and 16b connected to the player sides. The game board 12 and the game device 10 are folded into bellows by being repetitively folded outward and inward about the folds 25a, 25b, 25c, 25d, and 25e, and the game device 10 is miniaturized to carry about. In the game device 10, the game board 12 is integrally provided with the container bodies 16a and 16b, Go game stones are carried about with the game board 12, and placing spaces for the Go game stones or pieces are secured, so that game components are prevented from being lost.