Software collaborated with: Sony

Software developed by KOEI that is published by Sony


Title	Product code	Developed by	Year
Nobunaga's Ambition 2 - Nationwide Edition (信長の野望・全国版) PSG 2×	HBJ-G064D	KOEI	1987
Romance of the Three Kingdoms (三國志) PSG	HBJ-G065D	KOEI	1987
The Blue Wolf and The White Doe - Genghis Khan (蒼き狼と白き牝鹿・ジンギスカン) PSG 2×	HBJ-G080D	KOEI	1988