Nightmare Constellation is an Innsbruck-based progressive death metal and deathcore band featuring vocalist Tom Stover, guitarist Patrick Schatz, bassist Dominik Schatz, and drummer Clemens Recheis. Citing influences from Gojira to Cult of Luna, their release 'Palingenesis' fuses sludge-metal heaviness with progressive deathcore technicality.

Nightmare Corporation is a melodic death/groove metal band from Toulon, France, formed in 2016. Their releases Rage Mind and Dead Rider deliver a potent combination of melodic death metal precision and groove-driven heaviness from the French Riviera.

Nightmare Visions is a death/doom metal band from Wigan, UK, formed in 2018. Their sound merges death metal aggression with the crushing pace and melancholy of doom metal from Greater Manchester.

Nightmare World is a progressive power metal band from the Surrey/London area, active since 2017. Their sound fuses power metal's anthemic energy with progressive metal's structural complexity.

Nightmarer is an international death metal outfit formed in 2013, built around German guitarist Simon Hawemann (War From a Harlots Mouth), American vocalist John Collet (ex-Gigan), and drummer Paul Seidel, who concurrently performs with The Ocean. Their debut full-length Cacophony of Terror (2018) marked an entry into the dissonant, technically demanding end of death metal, and was followed by Deformity Adrift (2023) on Season of Mist. The band draws from a lineage of avant-garde extreme metal, favoring dense harmonic dissonance over conventional technicality.

Kutno thrash/heavy/death metal act with roots stretching back to 1990, making them one of central Poland's earliest extreme metal bands. Their three-plus decades of activity across multiple genres speak to remarkable staying power.

Nightmission is a heavy metal band from Dusseldorf, active since 2017. The band channels classic heavy metal from the Rhine metropolis and arts capital.

NightMyHeaven is a melodic black/death/symphonic metal band from Guimarães, Portugal, active since 2005. Two decades of activity from the city regarded as the birthplace of Portugal.

Nightmärr is a heavy metal band from Gothenburg, Sweden, formed in 2019. The band plays hard-hitting traditional heavy metal from the heart of Gothenburg's legendary metal scene.