Crimson Sea 2 (2004), KOEI Co., Ltd.
Crimson Sea (2002), KOEI Co., Ltd.
Kessen II (2001), KOEI Co., Ltd.
Kessen (2000), KOEI Co., Ltd.
Romance of the Three Kingdoms IV: Wall of Fire (1996), KOEI Co., Ltd.
Aerobiz Supersonic (1993), KOEI Co., Ltd.
Aerobiz (1992), KOEI Co., Ltd.
Operation Europe: Path to Victory 1939-45 (1992), KOEI Co., Ltd.
Gemfire (1992), KOEI Corporation
L'Empereur (1990), KOEI Co., Ltd.
Romance of the Three Kingdoms II (1990), KOEI Corporation
Bandit Kings of Ancient China (1989), KOEI Corporation
Nobunaga's Ambition II (1989), KOEI Co., Ltd.
Nobunaga's Ambition (1988), KOEI Corporation
Romance of the Three Kingdoms (1989), KOEI Co., Ltd.

Genghis Khan II: Clan of the Grey Wolf (1993), KOEI Corporation
Romance of the Three Kingdoms III: Dragon of Destiny (1993), KOEI Corporation
Gemfire (1992), KOEI Corporation
L'Empereur (1990), KOEI Co., Ltd.

P.T.O.: Pacific Theater of Operations (1991), KOEI Co., Ltd.