Santa Cruz, California's Gargantula has been spinning its web since 2015, weaving together progressive, stoner, doom, and death metal into something strange and sprawling. Their compositions wander freely across tempos and moods, held together by a psychedelic, spidery sensibility.

San Diego's Garth Algar dishes out stoner-laced sludge metal with the easygoing swagger and slow-rolling heaviness that the Southern California coast seems to generate naturally. Active since 2012, the band's party-ready name belies how genuinely crushing the music gets.

Los Angeles experimental outfit GASP has been pushing at the edges of sludge metal and hardcore since 2009, folding in noise, feedback, and abrasive texture until the genre lines dissolve entirely. Their music is confrontational and unpredictable, shaped by LA's eclectic and uncompromising DIY underground.

California crossover outfit Gatecrasher play the kind of thrash-fueled hardcore that belongs on sweaty club floors, tight and frantic with a punk-derived chip on their shoulder. Formed in 2019, they hit hard and keep it short.

Out of Torrance, California, Gatekeeper have been delivering no-frills death metal with a stripped-back, old-school conviction since 2013. Their approach favors bone-snapping riffs and guttural conviction over flash.

San Francisco's Gateways inhabit a singular space where progressive death metal collides with neoclassical shred, resulting in technically fearsome music that refuses to sit still. Since forming in 2011, they've pushed the limits of what guitar-driven extreme metal can absorb.

American Canyon, California's Gawdamn blend heavy and thrash metal with the kind of attitude that makes it clear they are not here to negotiate. Formed in 2020, they bring a blunt, no-nonsense energy to a region more commonly associated with progressive and tech-death.

San Jose's Gemanon bring melodic death metal to the Bay Area's underground, pairing hooky, lead-driven arrangements with genuine death metal aggression since 2012. They sit comfortably in the lineage of Scandinavian melodeath but with a distinctly American directness.

San Diego's Genestealer lift their name from Warhammer 40,000 lore and channel that pulpy, sci-fi menace into short, violent grindcore songs since 2019. Fast, brutal, and over before you can process what happened.