Ultra Street Fighter IV (2014) - Special Thanks (Sound section Staff).
Resident Evil: Operation Raccoon City (2012) - Audio Support (Sound) (Capcom).
Okugawa), Song Written by (Third Strike (Opening Theme Song) / Let's Get It On (Event Theme Song) / Moving On (Ending Song)) (Staff) (Street Fighter: 3rd Strike - Fight for the Future) (as Hideki), Arranged by (Third Strike (Opening Theme Song) / Let's Get It On (Event Theme Song) / Moving On (Ending Song)) (Staff) (Street Fighter: 3rd Strike - Fight for the Future) (as Hideki)
Street Fighter III 3rd Strike Online Edition (2011) - Music Compose (Staff) (Street Fighter: 3rd Strike - Fight for the Future) (as H.
Resident Evil 5 (2009) - Composer (Sound).
Dead Rising: Chop Till You Drop (2009) - Special Thanks.
Apollo Justice: Ace Attorney (2007) - Music.
Okugawa), Song Written by (Third Strike (Opening Theme Song) / Let's Get It On (Event Theme Song) / Moving On (Ending Song)) (Arcade Original Staff) (as hideki), Arranged by (Third Strike (Opening Theme Song) / Let's Get It On (Event Theme Song) / Moving On (Ending Song)) (Arcade Original Staff) (as hideki), Music (Consumer Original Staff) (as Dead Rising (2006) - Music (Capcom Game Development Staff)
Street Fighter III 3rd Strike: Fight for the Future (PS2 Version) (2004) - Music Compose (Arcade Original Staff) (as H.
Onimusha 3: Demon Siege (2004/2005) - Music Composer (Staff).
Onimusha 2: Samurai's Destiny (2002) - Music Composed by.
Street Fighter Alpha 3↑ (Arcade Version) (2001) - Sub Music Compose.
Okugawa), Song Written by (Third Strike (Opening Theme Song) / Let's Get It On (Event Theme Song) / Moving On (Ending Song)) (Arcade Original Staff) (as hideki), Arranged by (Third Strike (Opening Theme Song) / Let's Get It On (Event Theme Song) / Moving On (Ending Song)) (Arcade Original Staff) (as hideki), Music (Consumer Staff) (as Mega Man Legends 2 (2000/2003) - Special Thanks
Street Fighter III 3rd Strike: Fight for the Future (Dreamcast Version) (2000) - Music Compose (Arcade Original Staff) (as H.
Street Fighter Alpha 3: Saikyo Dojo (1999) - Sub Music Compose (Arcade Staff).
Okugawa), Song Written by (Third Strike (Opening Theme Song) / Let's Get It On (Event Theme Song) / Moving On (Ending Song)) (as hideki), Arranged by (Third Strike (Opening Theme Song) / Let's Get It On (Event Theme Song) / Moving On (Ending Song)) (as hideki)
Street Fighter III 3rd Strike: Fight for the Future (Arcade Version) (1999) - Music Compose (as H.
Street Fighter Alpha 3 (PSX and Saturn Versions) (1998/1999) - Sub Music Compose (Arcade Staff).
Street Fighter Alpha 3 (Arcade Version) (1998) - Sub Music Compose.
Street Fighter III 2nd Impact: Giant Attack (1997) - Music Compose, Music Arrangement.
Capcom Sports Club (1997) - Sound Staff.
Street Fighter III: New Generation (1997) - Music Compose.
Mega Man 2: The Power Fighters (1996) - Music (as Hideki OK).
Mega Man: The Power Battle (1995) - Music Arrange (as Hideki O.K).
Night Warriors: Darkstalkers' Revenge (1995/1996) - Music Composer (as Hideki O.K).
Darkstalkers: The Night Warriors (1994/1996) - Music Compose (as Hideki.OK).
Predator (Arcade Version) (1994) - Music Composer (as Hideki OK)
Dungeons & Dragons: Tower of Doom (1994) - Music Composer (as OK Production).