 | Orbeth - Mentalist Metal |  01.01.2016 |
 | Orbit Culture - Death Above Life Metal |  03.10.2025 |
 | Orbit Culture - Descent Metal | 18.08.2023 |
 | Orbit Culture - Nija Metal | 07.08.2020 |
 | Orbit Culture - Shaman [EP] Metal | 24.09.2021 |
 | Orbita Wiru - My maszyny Metal | 13.05.2013 |
 | Orbital Gate - Demonstration Of Post Apocalyptic Warfare Metal | 28.03.2025 |
 | Orchid - Sign Of The Witch [EP] Metal | 17.07.2015 |
 | Orchid - The Mouths Of Madness Metal | 26.04.2013 |
 | Orchid - The Zodiac Sessions Metal | 15.11.2013 |
 | Orchid's Curse - Cynics & Liars [EP] Metal | 04.03.2016 |
 | Orchid's Curse - Words Metal |  26.03.2013 |
 | Ordalia - Odes For Victory Metal | 20.09.2023 |
 | Orden Ogan - Final Days Metal | 26.02.2021 |
 | Orden Ogan - Final Days: Orden Ogan And Friends Metal | 21.10.2022 |