Extreme metal 1980`lerin başlarından itibaren konuşulmaya başlanan bir tür. Extreme metalin altında, zaman içinde black metal, death metal, doom metal ve thrash metal akımları doğdu. Loudwire`ın hazırladığı listede extreme metalin en iyileri sıralandı:

25. Pig Destroyer – Terrifyer
24. Cannibal Corpse – Tomb of the Mutilated
23. Terrorizer – World Downfall
22. Eyehategod – Take As Needed for Pain
21. Converge – Jane Doe
20. Emperor – In the Nightside Eclipse
19. Thergothon – Stream From the Heavens
18. The Dillinger Escape Plan – Calculating Infinity
17. Immolation – Close To A World Below
16. Autpsy – Mental Funeral
15. Death – Leprosy
14. Suffocation – Pierced From Within
13. Darkthrone – Transilvanian Hunger
12. Immortal – Pure Holocaust
11. Bathory – Under the Sign of the Black Mark
10. At The Gates – Slaughter of the Soul
9. Carcass – Necroticism Descanting the Insalubrious
8. Mayhem – De Mysteriis Dom Sathanas
7. Napalm Death – Scum
6. Venom – Black Metal
5. Emperor – Anthems to the Welkin ar Dusk
4. Dissection – Storm of the Light`s Bane
3. Death – Human
2. Morbid Angel – Altars of Madness
1. Slayer – Reign in Blood