Magma is a heavy metal band from Mezőtúr, Hungary, with roots stretching back to 1970. As one of Hungary's longest-active metal acts, they have delivered over five decades of heavy metal.

Magnetorium is a progressive heavy metal band from Maintal/Frankfurt, Germany, formed in 2013. They craft intricate progressive compositions with technical ambition.

Magor is a heavy and groove metal band from Jászberény, Hungary, formed in 2012. Named after the Hungarian mythological figure, they blend heavy and groove metal traditions.

Mahakala is a band from Athens, Greece, formed in 2020, having evolved from sludge and doom metal into heavy metal. Named after the Buddhist protector deity, their creative evolution reflects a journey from crushing heaviness to classic metal power.

A heavy metal act from the coastal city of Gdynia, Maholix has been delivering traditional metal since 2017. The band channels the Baltic maritime atmosphere into classic-style compositions.

Mainiac is a heavy metal band from Bützfleth, Germany, active since 2012. Their sound draws from the classic heavy metal tradition, forged in the industrial harbor town on the banks of the lower Elbe river.

MainPain is a heavy metal band from Novara, Italy, established in autumn 1996. Their discography includes 'Food For Thoughts' (2006) and 'The Empirical Shape of Pain' (2012), and they have opened for Blaze Bayley across European venues while sharing stages with Strana Officina and Domine.

Majak is a Neumünster, Germany-based band whose self-described "Occult Heavy Magick" has evolved from black/thrash metal roots into a psychedelic-tinged blackened heavy metal hybrid. Their 2024 album "Restless Wicked" earned acclaim as one of the year's best debuts, and they are booked for Rock Hard Festival 2026.

Majestic Mass is a metal band from Copenhagen, Denmark, whose aggressive catalog includes 'Savage Empire of Death,' 'Destroys Minds & Rapes Souls,' and 'Onwards.' The band channels extreme intensity through their provocatively titled releases.