Noctem

Oblivion	7
Exilium	7

Noctiferia

Per Aspera	7
Reforma	7
PAX	6
Transnatura	6

Nocturnus

The Key	8
Thresholds	8
Ethereal Tomb	7

Nocturnus AD

Paradox	7
Unicursal	7

Nomad

Transmorgrification (Partus)	7
Tetramorph [EP]	7
Transmigration Of Consciousness	7

Non Est Deus

Legacy

8

Norma Jean

Meridional	8
Redeemer	7
Polar Similar	7
All Hail	7
Deathrattle Sing For Me	7

Northland

Downfall And Rebirth

8

Northlane

Discoveries	8
Mesmer	8
Node	7
Singularity	7
Mirror's Edge [EP]	7
Alien	6
Obsidian	6

Nothgard

Malady X

8

Nothingface

Skeletons	9
Pacifier	7
An Audio Guide To Everyday Atrocity	7
Violence	7

Noumena

Absence	8
Anatomy Of Life	7
Death Walks With Me	7
Myrrys	7
Anima	6

Novembre

URSA

7

Nuclear Power Trio

A Clear And Present Rager [EP]	9
Wet Ass Plutonium	8

Nucleus

Sentient	7
Entity	6

Nyktophobia

What Lasts Forever	7
To The Stars	7

Nylithia

Hyperthrash

7

Obituary

Cause Of Death	10
The End Complete	9
Frozen In Time	8
Inked In Blood	8
Obituary	8
Dying Of Everything	8
Slowly We Rot	7
World Demise	7
Back From The Dead	7
Xecutioner's Return	7
Darkest Day	7

Obliteration

Cenotaph Obscure

8

Obliveon

From This Day Forward

8

Oblivion

The Path Towards...	8
Called To Rise	7
Oblivion	7

Obscenity

Summoning The Circle

7

Obscura

Cosmogenesis	10
Akróasis	9
Diluvium	9
A Valediction	8
Retribution	7
Omnivium	7

Obscure

Darkness Must Prevail	8
Back To Skull [Compilation]	7

Obsequiae

Aria Of Vernal Tombs	8
The Palms Of Sorrowed Kings	8

Obsidian Kingdom

Mantiis - An Agony In Fourteen Bites	8
A Year With No Summer	7
Meat Machine	6

Obsidious

Iconic

8

Obskkvlt

Blackarhats

8

Ocean Of Grief

Pale Existence

8

Oceano

Contagion	7
Incisions	7
Revelation	7
Living Chaos	7
Depths	6
Ascendants	6

Oceans Of Slumber

Oceans Of Slumber	8
Winter	7
The Banished Heart	7
Starlight And Ash	6

Odious

Skin Age

6

Odious Mortem

Cryptic Implosion	8
Synesthesia	8
Devouring The Prophecy	7

Odium

Burning The Bridges To Nowhere	8
Terraform	8
At The Bottom	7

Officium Triste

Hortus Venenum	8
Reason	6
Giving Yourself Away	6
The Death Of Gaia	6