Keiichi Sugiyama

• Doukyuusei Sound Memorial (CD) (1993)
• The Typing of the Dead (PC Version) (2000) — Sound Designer
• Skies of Arcadia (2000) — Sound Effects (Original Development Staff) [NOTE: MA]
• Napple Tale: Arsia in Daydream (2000) [NOTE: voice/sound file work]
• Planet Ring (2000) [NOTE: BGM and Jingles]
• Daytona USA 2001 (2000) — Composer
• The Typing of the Dead (Dreamcast Version) (Overseas) (2001) [NOTE: Uncredited; voice/sound file work]
• Sega Musics Network (i-Mode) (2001) — Ringtones [NOTE: Arrangement]
• Super Galdelic Hour (2001) — Composer [NOTE: BGM and songs]
• Magic: The Gathering (2001) [NOTE: voice/sound file work]
• Rez (2001) — Sound Design
• Space Channel 5 Part 2 Soundtrack Vol. Hey!! (CD) (2002)
• Space Channel 5 Part 2 Moji Moji ★ Can't Stop Remix (CD) (2002)
• Blinx the Time Sweeper (2002) — Sound Director, Sound Creator [NOTE: sound director, BGM, jingles, sound effects, MA]
• Skies of Arcadia: Legends (2002) — Sound Effects (Original Development Staff)
• New Roommania: Porori Seishun (2003)
• Billy Hatcher and the Giant Egg (2003) — Special Thanks
• Nightshade (2003) — BGM (Wave Master Inc.) (Sound)
• Sonic Heroes (2003) — Music Composer
• Ryoko Sensei no Shinryoshitsu - Nayameru Kohitsuji niwa Ai no Muchi yo (2004)
• Complete Trinity: Sonic Heroes - Original Soundtrax (CD) (2004) (as Keiichi Sugiyama!)
• Blinx 2: Masters of Time and Space (2004) — Sound Producer, Sound Director, Sound Creator
• Beck: The Game (2005) — Sound Director, Sound Creator
• Shadow the Hedgehog (2005) — Musician
• Rule of Rose (2006) — Sound Design
• Odama (2006) — Sound Editing
• Lumines Live! (2006)
• Rez HD (2008) — Sound Creator, Performed by ("Buggie Running Beeps")
• Miburi & Teburi (2008)
• KSL LIVE WORLD 2008 Pamphlet and Memorial Disc (CD) (2008) (as fiberjelly)
• Hatsune Miku: Project DIVA (2009)
• No More Heroes 2: Desperate Struggle (2010) — Music
• PRISM Generations! Prism☆Magical Character Song Ibuki Mikanagi (CD) (2010)
• Hatsune Miku: Project DIVA 2nd (2010)
• Super Monkey Ball 3D (2011) — Composer
• Child of Eden (2011)
• Mario & Sonic at the London 2012 Olympic Games (Wii Version) (2011) — Composer (Studiio Qareeb) (Sound Section)

Daytona USA 2001

• Be Close to Victory! — Music & Arrangement
• Racer Unknown — Music & Arrangement
• A Bit of Rest — Music & Arrangement
• Desert Grit-Race — Music & Arrangement
• Desert Grit-Mirror — Music & Arrangement
• Desert Grit-Goal — Music & Arrangement
• Desert Grit-Clear — Music & Arrangement
• Holiday in the Park-Race — Music & Arrangement
• Holiday in the Park-Mirror — Music & Arrangement
• Holiday in the Park-Goal — Music & Arrangement
• Holiday in the Park-Clear — Music & Arrangement

Rez

• Buggie Running Beeps 01 <area01> — Music & Arrangement

Space Channel 5 Part 2 Soundtrack Vol. Hey!!

• Galaxy Remix [More Strobe Action] — Remixed by

Space Channel 5 Part 2 Moji Moji ★ Can't Stop Remix

• Who Is the Real One ★ Again! — Remixed by

Sonic Heroes

• Stage 06 : Bingo Highway — Music & Arrangement, Programming
• Battle : Casino Area — Music & Arrangement, Programming

Complete Trinity: Sonic Heroes - Original Soundtrax

• Bingo Highway / Remix ver. — Music, Arrangement & Remix, Programming

Shadow the Hedgehog

• Digital Circuit — Arrangement, Programming
• Mad Matrix — Programming
• Cosmic Fall — Arrangement, Programming

Mario & Sonic at the London 2012 Olympic Games (Wii Version)

• Dream Sprint (Bingo Highway) — Music & Re-Arrangement, Programming