Nagasaki Birth Defect is a genre-defying extreme metal trio from Leicester, UK, self-described as fast/sludge/ambient/noise/prog/grind weirdos. Their 2024 album Friendship, Yay! delivers sixteen tracks of chaotic, provocatively titled grindcore and progressive metal.

Nahrayan is a sludge/death/doom metal band from Elche in southeastern Spain, active since 2002. Over two decades of crushing doom from the city of palm groves make them one of the longest-running extreme acts in the Valencia region.

Naisian is an atmospheric sludge metal band from Sheffield, UK, active since 2011, creating heavy music that spans post-metal, doom, sludge, and progressive rock. Known for multiple hiatuses and comebacks, their 2012 album Monocle was remixed and remastered for a 2024 re-release.

Kraków atmospheric sludge metal act formed in 2021, layering immersive textures over crushing heaviness from Poland's second city. Their contemplative approach adds depth to sludge metal's raw power.

Tarnowskie Góry sludge metal outfit formed in 2014, delivering crushing sonic weight from the Silesian voivodeship. Their oppressive approach channels the genre's most suffocating impulses.

Narusnijce is a post-metal/sludge metal band from Perugia, Italy, formed in 2023. They deliver heavy, atmospheric compositions from the capital of Umbria.

Nathan Watson is an atmospheric sludge metal project from Coventry, UK, active since 2008. The project delivers heavy, atmospheric sludge metal from the industrial heart of the English Midlands.

Nausea or Questra is an experimental sludge metal band from Prato, Italy, active since 2010. Their unusual name matches their unconventional approach to heavy, textured music.

Amsterdam atmospheric sludge/post-metal/rock act formed in 2014, crafting immersive sonic landscapes through the fusion of crushing heaviness and expansive dynamics. Their atmospheric approach bridges multiple genres into contemplative heaviness.