Nightmare Slaughter deliver old-school death metal with a deeply occult bent, drawing on Thelema, Kabbalah, and Mesopotamian mythology across their lyrics. Their 2017 EP "The Quintessence of the Incomprehensible" introduced the project, and the 2021 full-length "Worm Kabbalah" solidified their sound — dense, deliberate, and reminiscent of early Vader and Gorguts.

Nightwölf wear their Judas Priest and Accept influences proudly, forging a traditional heavy metal sound built on twin-guitar riffs and powerful melodic vocals from Jack Znake. Their 2023 debut album "The Cult of the Wolf", released through Kill Again Records, is a ten-track statement of purpose that even dips into Afro-Brazilian mythology with the track "God of Iron".

Nigrae Lunam is a doom/death duo composed of vocalist Paulo Brasil and multi-instrumentalist Kastiphas, whose music explores occult feminine mythology — particularly the figure of Lilith — through slow, suffocating riffs and bleak atmospherics. Their 2020 debut album "Lilith Regnator Est" was recognized by metal press as one of the standout Brazilian extreme metal releases of that year.

Nigredo is a black metal band from Santiago, Chile, whose lyrical and aesthetic themes center on the alchemical concept of putrefaction and a cult of death — nigredo being the Latin term for blackness and the first stage of alchemical transformation. The band released a demo in 2018 before issuing the full-length "Grimoire Timeless Death" in April 2021 through German label Schattenkult Produktionen as a limited run of 300 CDs.

Nigromancia is a death/thrash metal band from Paine, south of Santiago, formed in 2019 by members performing under names including Black Caracalla, Yllaw Vomit, Rotten Serpent, and Dismember. Drawing from occultism and old-school death metal traditions, the band released the EP Hidden Rituals through Burning Coffin Records in 2021, followed by the full-length Vortex of Existence in 2023, both rooted in a sound likened to Pestilence, Entombed, and Excoriate.

Nigrum Anima is a black metal band from Bogotá, Colombia, formed in August 2012 by Camilo Torres, Camilo Rueda, and James Molina. The band's name translates to "black soul" in Latin, a fitting reflection of their lyrical focus on darkness, anti-religion, and existentialism. Their 2021 debut full-length, Esencia Oscura Prevalece, is available independently.

Lignum Mortis is a one-man black and doom metal project from Valdivia, in southern Chile, that merges sounds drawn from death metal, black metal, and dark ambient to create densely layered sonic landscapes. The project's self-titled debut was released in 2015 as a limited CD-R run of 30 copies before being made available digitally, followed by Vacuum Inferno in 2022 and Lignum Mortis II in December 2025. All music, recording, mixing, mastering, and artwork are handled entirely by the sole member.

Nigrum Vortex is a black metal band from Lima, Peru, formed in 2022 and released through Oratorivm Records. Their debut EP "Across the Nigrum Vortex" (2023) introduced a sound rooted in South American black and death metal traditions, with four tracks exploring themes of perpetual darkness and void.

Nigurah blend the groove-heavy stomp of mid-era Sepultura with thrash and death metal aggression, arriving from the same Rio Grande do Sul scene that has long punched above its weight in Brazilian extreme metal. The quartet — Rafael Prado on vocals, Fernando Cezar Jr on guitar, Felipe Ribeiro on bass, and Luke Santos on drums — released their debut EP "Incendiar" in October 2020.