Orakle

Uni Aux Cimes

6

Orange Goblin

The Wolf Bites Back	8
Science, Not Fiction	7

Oranssi Pazuzu

Muuntautuja	8
Muukalainen Puhuu	7
Mestarin Kynsi	7

Orbit Culture

Nija	9
Descent	9
Rasen	8
Shaman [EP]	8
The Forgotten [EP]	8

Orbstruct

Phobos Rising	9
Deimos Falling	8

Orbyssmal

Abyssom [EP]

4

Ordalia

Odes For Victory

6

Order

The Gospel

8

Order Of Orias

Ablaze

7

Ordinul Negru

Nebuisa [EP]

7

Ordo Inferus

Invictus Et Aeternus	9
Damnati [EP]	7

Orecus

Dreadnought

9

Oreyeon

Equations For The Useless

6

Organ Dealer

The Weight Of Being

6

Organectomy

Existential Disconnect	8
Nail Below Nail	8

Orgone

Pleroma

7

Origin

Chaosmos	9
Unparalleled Universe	8
Abiogenesis - A Coming Into Existence [Compilation]	7

Origin Of Escape

Shapes

8

Orkan

Element

6

Orkrist

Luea

7

Orm

Intet • Altet

7

Ornamentos Del Miedo

El Cosmos Me Observa En Silencio

6

Oro

Vid V​ä​gs Ände

7

Ôros Kaù

Thanatos

5

Orphalis

As The Ashes Settle

8

Orphaned Land

The Never Ending Way Of ORwarriOR	8
All Is One	8
Unsung Prophets & Dead Messiahs	8

Orphans Of Dusk

Spleen

7

Orphean Passage

Apart

6

Orpheus Omega

Wear Your Sins	8
Emberglow	7

Orplid

Deus Vult

7

Orthodox (USA)

Learning To Dissolve

7

Orthodoxy

Ater Ignis

6

Orthostat

The Heat Death

6

Oryx

Lamenting A Dead World

5

Oshiego

The Book Of Wonders	7
Jaljalut	6

OSI

Blood	10
Office Of Strategic Influence	9
Free	9
Fire Make Thunder	8

Osiah

Loss	9
Chronos [EP]	9
Kairos	8

Ossaert

Offerdier

6

Ósserp

Els Nous Cants De La Sibil·la

7

Ossilegium

The Gods Below

7

Ossuary Anex

Obscurantism Apogee

8

Otargos

Fleshborer Soulflayer

8

Otep

Smash The Control Machine	9
Atavist	8
Generation Doom	8
The God Slayer	8
Sevas Tra	7
Kult 45	7
Hydra	6

Other World

Tenebrous

6

Otherwise

Peace At All Costs	7
Defy	6

Ottone Pesante

Scrolls Of War

7

Ou

II: Frailty

6

Oubliette

Apparitions	8
The Passage	8

Our Common Sense

Harbinger Of Calamity

8

Our Earth Is A Tomb

Hardcovers, Vol. 1 [EP]

7

Our Hollow, Our Home

Hope & Hell

7

Our Place Of Worship Is Silence

Disavowed, And Left Hopeless

6

Our Survival Depends On Us

Melting The Ice In The Hearts Of Men

7

Ouroboros

Glorification Of A Myth

9

Out Of This World

Out Of This World

6

Outcast

First Call / Last Warning	9
Self-Injected Reality	9
Awaken The Reason	8

Outer Heaven

Realms Of Eternal Decay	7
Infinite Psychic Depths	7

Outergods

A Kingdom Built Upon The Wreckage Of Heaven

6

Outlaw

The Fire In My Tomb	8
Death Miasma [EP]	8
Reaching Beyond Assiah	8

Outre

Hollow Earth

8

Outre-Tombe

Répurgation

6

Ov Hell

The Underworld Regime

8

Ov Shadows

Heresiarch

7

Ov Sulfur

Oblivion [EP]	8
The Burden Ov Faith	8

Over The Voids

Hadal

7