| CMY-526 | | Best 6 Songs Series 5: Beast King GoLion / Space Emperor God Sigma / Galaxy Express 999 / ベスト6曲シリーズ 5 百獣王ゴライオン/宇宙大帝ゴッドシグマ/銀河鉄道999 / Best 6 Kyoku Series 5 Hyakujuuou GoLion / Uchuu Taitei God Sigma / Ginga Tetsudou 999 | Jun 1981 | Cassette |
| N/A | | Croixleur Sigma Original Soundtrack / Croixleur Sigma Original Soundtrack / Croixleur Sigma Original Soundtrack | Jun 06, 2014 | Digital |
| N/A |  | Croixleur Σ ORIGINAL SOUND TRACK / Croixleur Σ ORIGINAL SOUND TRACK / Croixleur Σ ORIGINAL SOUND TRACK | Dec 19, 2019 | Digital |
| N/A | | Croixleur Σ ORIGINAL SOUND TRACK / Croixleur Σ ORIGINAL SOUND TRACK / Croixleur Sigma ORIGINAL SOUND TRACK | Dec 30, 2014 | CD |
| N/A | | Croixleur Σ ORIGINAL SOUND TRACK / Croixleur Σ ORIGINAL SOUND TRACK / Croixleur Sigma ORIGINAL SOUND TRACK | Mar 2018 | CD |
| N/A | | Kayoushoku no Sigma / 花葉色のシグマ / Kayoushoku no Sigma | Oct 21, 2018 | CD |
| N/A | | Mega Man X: Generation Sigma Unofficial Soundtrack / Mega Man X: Generation Sigma Unofficial Soundtrack / Mega Man X: Generation Sigma Unofficial Soundtrack | Jun 12, 2017 | Digital |
| (386514) TCM1065 03 | | NINJA GAIDEN Σ2 Official Soundtrack / NINJA GAIDEN Σ2 Official Soundtrack / NINJA GAIDEN Σ2 Official Soundtrack | Sep 29, 2009 | CD |
| 5060073306800-CD | | NINJA GAIDEN Σ2 Original Soundtrack / NINJA GAIDEN Σ2 Original Soundtrack / NINJA GAIDEN Σ2 Original Soundtrack | Oct 02, 2009 | CD |
| TECMO-002 | | NINJA GAIDEN Σ2 Original Soundtrack / ニンジャガイデン シグマ2 オリジナルサウンドトラック / NINJA GAIDEN Σ2 Original Soundtrack | Oct 01, 2009 | CD |
| CB-7093~4 | | Robot Animation Super Action 24 Uchuu Taitei God Sigma / Mirai Robo Daltanious / ロボットアニメスーパーアクション24 宇宙大帝ゴットシグマ/未来ロボダルタニアス / Robot Animation Super Action 24 Uchuu Taitei God Sigma / Mirai Robo Daltanious | Oct 1980 | 2 Vinyl |
| EFLA-0003 | | Sigma / eufonius / Σ / eufonius / Sigma / eufonius | Jan 31, 2007 | CD |
| TFCC-86570 | | Sigma / REOL / Σ / REOL / Sigma / REOL | Oct 19, 2016 | CD |
| TFCC-86569 | | Sigma / REOL [Limited Edition] / Σ / REOL / Sigma / REOL [Limited Edition] | Oct 19, 2016 | CD + DVD |
| TKM-0003 | | SIGMA Because / リトルバスターズ！アレンジミニアルバム[シグマビコーズ] / SIGMA Because | Apr 29, 2013 | CD |
| KUMA-0001 | | SIGMA HARMONICS Original DVD / シグマ ハーモニクス オリジナル DVD / SIGMA HARMONICS Original DVD | Aug 21, 2008 | DVD |
| SQEX-10120 | | SIGMA HARMONICS Original Soundtrack / シグマ ハーモニクス オリジナル・サウンドトラック / SIGMA HARMONICS Original Soundtrack | Sep 24, 2008 | CD |
| N/A | | Sigma Star Saga DX Soundtrack / Sigma Star Saga DX Soundtrack / Sigma Star Saga DX Soundtrack | Nov 2025 | CD |
| N/A | | Sigma Theory: Global Cold War / Sigma Theory: Global Cold War / Sigma Theory: Global Cold War | Apr 18, 2019 | Digital |
| N/A | | The Sigma Fortress Remix Gauntlet 2015 / The Sigma Fortress Remix Gauntlet 2015 / The Sigma Fortress Remix Gauntlet 2015 | 2015 | 9 Digital |
| CH-3003 | | TV Manga Action Series Moero Arthur Hakuba no Ouji / Uchuu Taitei God Sigma Uta to Action Sound! / テレビまんがアクションシリーズ 燃えろアーサー白馬の王子/宇宙大帝ゴッドシグマ うたとアクションスサウンド! / TV Manga Action Series Moero Arthur Hakuba no Ouji / Uchuu Taitei God Sigma Uta to Action Sound! | Jul 1980 | Vinyl |
| SCS-542 | | Uchuu Taitei God Sigma / 宇宙大帝ゴッドシグマ / Uchuu Taitei God Sigma | Apr 01, 1980 | Vinyl |
| N/A | | Warhammer Age of Sigmar: Realms of Ruin (Original Soundtrack) / Warhammer Age of Sigmar: Realms of Ruin (Original Soundtrack) / Warhammer Age of Sigmar: Realms of Ruin (Original Soundtrack) | Nov 17, 2023 | Digital |
