Ola Englund

The Chug Project, Vol.1	8
Starzinger	7

Omega Diatribe

Iapetus	8
Metanoia	8
Deviant	8

Ominous Ruin

Amidst Voices That Echo In Stone

8

Ominous Scriptures

Rituals Of Mass Self​-​Ignition

6

Omission

Worship What You Fear	8
Breathless Existence	8
Pioneers Of The Storm	8

Omnihility

Biogenesis	8
Deathscapes Of The Subconscious	8
Dominion Of Misery	8

Omnium Gatherum

The Redshift	8
New World Shadows	8
Beyond	8
Grey Heavens	8
The Burning Cold	8
Origin	7

Omnivortex

Diagrams Of Consciousness	8
Circulate	8

Once Human

Evolution	7
Scar Weaver	7

Onheil

In Black Ashes

7

Oni

Ironshore	8
Loathing Light	7
The Silver Line	7

Onslaught

The Force	7
Sounds Of Violence	7
VI	7
Generation Antichrist	7

Opeth

Blackwater Park	8
Deliverance	8
Damnation	8
Orchid	7
Morningrise	7
My Arms, Your Hearse	7
Still Life	7
Watershed	7

Ophidian I

Desolate	9
Solvet Saeclum	8

Oracles

Miserycorde

7

Oranssi Pazuzu

Valonielu	7
Värähtelijä	7
Mestarin Kynsi	7

Orbit Culture

Redfog [EP]	8
Nija	8
Shaman [EP]	8
Descent	8
The Forgotten [EP]	8
Rasen	7

Order Of Ennead

An Examination Of Being	7
Order Of Ennead	7

Ordo Inferus

Invictus Et Aeternus

8

Organectomy

Nail Below Nail	8
Domain Of The Wretched	7
Existential Disconnect	7

Orgone

The Joyless Parson	7
The Goliath	7

Origin

Antithesis	9
Entity	9
Echoes Of Decimation	8
Omnipresent	8
Unparalleled Universe	8
Chaosmos	8

Orphalis

The Birth Of Infinity	8
The Approaching Darkness	8
As The Ashes Settle	8

Orphanage

By Time Alone	7
Inside	7
Driven	7

Orphaned Land

Mabool: The Story Of The Three Sons Of Seven	9
The Never Ending Way Of ORwarriOR	8
El Norra Alila	7
All Is One	7
Unsung Prophets & Dead Messiahs	7

Orthodox

Amanecer En Puerta Oscura	8
Sentencia	7
Baal	7

Orthodoxy

Novus Lux Dominus

7

Osiah

Kingdom Of Lies	8
Kairos	8
Loss	7
Chronos [EP]	7

Ósserp

Sang I Sutge	8
Al Meu Pas S'alça La Mort	8
Els Nous Cants De La Sibil·la	8

Ossilegium

The Gods Below

7

Otep

Sevas Tra	8
Jihad [EP]	8
Generation Doom	7
House Of Secrets	6
Atavist	6
The Ascension	5
Hydra	4
Kult 45	4

Oubliette

Eternity Whispers	8
The Passage	7

Ouroboros

Glorification Of A Myth	8
Emanations	8