Gunjin Shōgi

Although the pentagonal pieces are shaped like those of Shōgi, the objective is to capture the other player's flag, more similar in gameplay to Stratego (1942) and its antecedent L'Attaque (1908).

Gunjin Shōgi is well-suited for video game implementation since the computer can take the place of the third-party arbiter without revealing the identity of pieces.

[7] A Simple series title was released as Ultimate Mind Games for PlayStation 2 for western markets, which included a Gunjin Shōgi implementation.

[9] Since its release, publishers have created many versions of Gunjin Shōgi, which have differing rules, piece counts, and gameboard sizes.

All versions have several common features, including a hierarchy of strengths based on military officer ranks, mines and engineers to defuse them, a weak spy able to capture the most powerful general, a headquarters area, and a flag or other stationary object to be captured; despite these, there is a wide variety of mechanized and mounted units (planes, tanks, cavalry, infantry, missiles, atomic bombs) and gameboard layouts.