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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1.Dimmu Borgir - Abrahadabra

2.Rotting Christ - Aealo

3.Allegaeon - Fragments Of Form And Function

4.Carach Angren - Death Came Through A Phantom Ship

5.Dark Fortress - Ylem

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I rated 1st Place 10/10; 2nd-6th Place 9/10 and 7th-24th Place 8/10. So it was kind of hard for me to create this list, because there are many albums with a same ranking. There is some arbitrariness in there especially around the 12th-20th place.

1.Opeth - In Live Concert At The Royal Albert Hall

2.Solution .45 - For Aeons Past

3.Asphyx - Live Death Doom

4.Misery Index - Heirs To Thievery

5.At The Gates - Purgatory Unleashed

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