Takayuki MASUO / 増尾隆, AKA Ryukow MASUO

Games (in alphabetical order)

Bomber King / ボンバーキング, AKA RoboWarrior (Famicom – 1987)
Cover art for the Japanese version (Source: mentioned by the artist on Twitter)
.Note: also used for the cover of the US version of Bomberman for NES

Dungeon Master Nexus / ダンジョン・マスターネクサス (Saturn – 1998)
Cover art, monster design (Sources: in-game credits, mentioned by the artist on Twitter: 1, 2)

Fighting Street / ファイティングストリート (PC Engine CD – 1988)
Cover art (Source: mentioned by the artist on Twitter)

Final Soldier / ファイナルソルジャー (PC Engine – 1991)
Cover art (Sources: mentioned by the package designer on Twitter: 1, 2, 3, 4)

Gotha: Ismailia Seneki / ゴータ～イスマイリア戦役～ (Saturn – 1995)
Mecha design, character design (Source: mentioned by the artist on Twitter)

Hector ’87 / ヘクター’87, AKA Starship Hector (Famicom – 1987)
Cover art, logo design (Sources: mentioned by the artist on Twitter 1, 2)

Jackie Chan / ジャッキーチェン成龍, AKA Jackie Chan Action Kung Fu (PC Engine – 1991)
Cover art (Source: mentioned by the package designer on Twitter)

Neutopia II / ニュートピアII (PC Engine – 1991)
Logo design (Source: mentioned by the package designer on Twitter)

Power League III / パワーリーグIII (PC Engine – 1990)
Cover art (Source: mentioned by the package designer on Twitter)

R-Type Part I (PC Engine – 1988)
Hu-Card label illustration (Source: mentioned by the artist on Twitter 1, 2, 3)

R-Type Part II (PC Engine – 1988)
Hu-Card label illustration
(Source: mentioned by the artist on Twitter 1, 2, 3)
.Note: It was originally meant to be used for the cover of R Type Part I (Source: mentioned by the artist on Twitter)

Tenbō-dai – Murder on the Top / 展望台 (PC-88, PC-98 – 1989)
Cover art (Source: signature found on the artwork)

Vampire Hunter D / バンパイアハンターD (PS1 – 1999)
Setting, Opening movie (Source: mentioned by the artist on Twitter)