Mardröm is a black/doom metal and drone project from Stolzenau, Germany, formed in 2024. Their sound occupies the suffocating intersection of black metal's frigid atmosphere, doom's crushing weight, and drone's hypnotic repetition.

Mare Infinitum is a atmospheric doom/death metal band from Moscow, Russia, formed in 2011. They craft crushing doom-death compositions steeped in oppressive heaviness.

Mares of Diomedes is a doom and sludge metal band from Belfast, Northern Ireland, formed in 2015. Named after the man-eating horses of Greek mythology, they deliver crushing doom-sludge.

A stoner and doom metal act from Birmingham, the city that birthed the genre, Margarita Witch Cult channels the Sabbathian tradition with fuzz-drenched riffs and occult themes since 2022. The band carries the weight of Birmingham's doom legacy in every down-tuned chord.

Marianas Rest is a melodic doom/death metal band from Kotka, Finland, formed in 2016. They craft crushing doom-death compositions steeped in oppressive heaviness.

Marja Üldine is a heavy/doom/folk metal, various band from Saint Petersburg, Russia, formed in 2022. They weave folk traditions into heavy metal compositions.

Blood Fetish is a goregrind project from the university city of Szeged, formed in 2022. The project delivers short, grotesque bursts of extreme music rooted in the most visceral traditions of grindcore.

A one-man progressive melodic doom metal project from Zonhoven in Limburg, founded in 2018, Marrowlands draws on the atmospheric and melodic traditions of Draconian, Opeth, Trees of Eternity, and My Dying Bride to craft entirely instrumental compositions. The project remains unsigned and independent, releasing material directly through Bandcamp.

Marrowrend is a stoner/doom metal act from Saint Petersburg, active since 2021. The band delivers bone-crushing, marrow-extracting doom from Russia's cultural capital.