Alone in the Dark 2 / アローン・イン・ザ・ダーク2 (DOS - 1993, PC-98, FM Towns - 1994, 3DO, Saturn, PS1 - 1996)
Cover art (Source: signature found on the artwork)
Total Annihilation: Kingdoms (Windows - 1999)
Cover art (with Clayton Kauzlaric) (Source: in-game credits)
Total Annihilation: Kingdoms - The Iron Plague (Windows - 2000)
Illustrations (Source: in-game credits)
Twin Cobra, AKA Kyūkyoku Tiger / 究極タイガー (Mega Drive - 1991)
Cover art for the US and European versions (Source: signature found on the artwork)
Ultima Online: Samurai Empire (Windows - 2004)
Cover art (Source: in-game credits)
Alone in the Dark 2
Total Annihilation: Kingdoms
Twin Cobra
Ultima Online: Samurai Empire