G.R.I.M. is a doom metal band from Oslo, formed in 2019. They deliver crushing doom from the Norwegian capital.

Gagarin is a sludge/doom/post-metal band from Ponferrada, Spain, formed in 2013, named after the first human in space. The band channels cosmic heaviness through dense, atmospheric sludge and doom from the Leon province of Castile.

Gaistaz is a blackened gothic/doom metal band from Gelderland, formed in 2019. They blend blackened atmosphere with gothic doom from the eastern Dutch province.

Bratislava gothic/doom/death metal veterans founded in 1995, whose Tolkien-inspired name matches a sound steeped in science fiction, fantasy, and psychedelia. Albums like 'Empire of Emptiness' and 'The Mirror of Ages' established them as pillars of the Slovak metal scene across three decades of activity.

Galahad is a doom and gothic metal band from Brissac-Quincé in the Loire Valley, France, formed in 2011, merging the weighty despair of doom metal with gothic metal's dark romanticism. Their sound explores the intersection of crushing heaviness and atmospheric, melancholic beauty.

Galar is a black/doom/death metal project from Ireland, active since 2010 and merging three extreme metal genres into a single devastating sonic force. The project explores the darkest intersections of black, doom, and death metal.

Galg is a depressive black/doom metal/drone project from Nijmegen, formed in 2014. Their Dutch name — meaning 'gallows' — captures the bleak, execution-themed character of their extreme music.

Gallileous is a stoner/doom metal band from Wodzislaw Slaski in Silesia, active since 2008. They have evolved from funeral doom through stoner/doom to psychedelic stoner rock, reflecting a constantly shifting sonic vision from the southern Polish coalfields.

Gallons of Mud is a stoner/sludge/doom metal band from Cologne, Germany, formed in 2011, driven by a self-described passion for Sabbath riffs, slow movements, and infectious grooves. Their 2018 full-length God Bless & Fuck You was recorded and mixed by bassist Steve Albino, delivering seven tracks of doomy, groove-laden stoner metal.