Galactomyces is a slam and brutal death metal band from Rostov-on-Don, Russia, formed in 2024 and delivering gut-churning brutality from southern Russia. The project merges slam's guttural weight with deathcore breakdowns.

Gangrenectomy is a slam/brutal death metal band from Catania, Sicily, formed in 2017. They deliver the guttural heaviness of slam death metal from the foot of Mount Etna.

Gangrenomity is a brutal death metal act from Bellinzona in the Italian-speaking Ticino region of Switzerland, formed in 2014 with members from Insomnia Isterica. Their 2014 demo was a raw, DIY recording with drums captured in a single take and no triggers, yielding three tracks of slamming brutality.

Gargleguts is a slam/brutal death metal/goregrind project from the United Kingdom, formed in 2023. Their deliberately grotesque name signals the visceral extremity of their slam and goregrind approach.

Garroter is a brutal death metal band from Krosno in southeastern Poland, formed in 2018. They deliver visceral brutality from the Subcarpathian Voivodeship.

Gastrectomy is a slam/brutal death metal band from Somerset in southwestern England, formed in 2024. Their surgical name — referring to stomach removal — signals the medical-horror fixation of their slam death metal.

Gathering Darkness is a death/doom and brutal death metal band from Santander in Cantabria, Spain, active since 2000, evolving from early death/doom into a more brutal approach. The band has built a quarter-century of extreme metal from Spain's northern coast.

General Fibrosis is a slam and brutal death metal band from Saint Petersburg, Russia, formed in 2023 and dealing in the most extreme forms of guttural death metal. The project channels medical horror through punishing brutality.

GG Proiettili is a slam/brutal death metal band from London, formed in 2024. Their Italian-inflected name — meaning 'GG bullets' — signals the violent precision of their slam death metal from the British capital.