The albums below is my definition of extreme metal music, regardless of their genre. Entire list is based only on my personal preferences in metal.
Rules:
1. One album per band
2. 305 groups/305 albums…

1.In Flames - Clayman

2.Metallica - ...And Justice For All

3.Chimaira - Chimaira

4.Death - Symbolic

5.Testament - The New Order

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Not my genre so this is a pretty limpdicked list.

Inc. Avant Garde Metal because I'm a Philistine who can't tell the difference.

1.Tool - Lateralus

2.Celtic Frost - Monotheist

3.Arcturus - La Masquerade Infernale

4.Opeth - Ghost Reveries

5.Death - Symbolic

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1.At The Gates - Slaughter Of The Soul

2.Rammstein - Mutter

3.Primordial - To The Nameless Dead

4.The Gathering - Mandylion

5.Alice In Chains - Dirt

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1.Tool - 10,000 Days

2.Celtic Frost - Monotheist

3.Vader - Impressions In Blood

4.Katatonia - The Great Cold Distance

5.Enslaved - Ruun

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AtoZ (Album)…

1.Lost Horizon - A Flame To The Ground Beneath

2.Ihsahn - After

3.Anthrax - Among The Living

4.Faith No More - Angel Dust

5.Riverside - Anno Domini High Definition

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