In Heaven is a atmospheric gothic metal act from Heraklion, Greece, active since 2007 and weaving dark romanticism and heavy atmospherics into its sound. The project channels the melancholy and grandeur of gothic metal.

In Human Form is a melodic black/death metal band from Santa Cruz de Tenerife, Spain, active since 2008, merging black and death metal with sweeping melodic passages from the Canary Islands. The band has spent nearly two decades crafting their dual-genre sound from the volcanic Atlantic archipelago.

In Lacrimaes et Dolor is a atmospheric funeral doom metal project from Macerata, Italy, active since 2012 and crafting glacially slow, suffocating heaviness at the most oppressive tempos in extreme metal. The project plumbs the depths of despair through crushing, extended compositions.

In Limine is a thrash/death/groove metal band from Cremona, Italy, active since 2023 and merging death metal's heaviness with thrash's relentless velocity. The project delivers aggressive crossover fury.

In Lingua Mortua is a progressive/melodic black metal act from Hønefoss, Norway, active since 2007 and channeling melodic sensibilities through the atmospheric intensity of black metal. The project delivers sweeping, emotionally resonant extreme metal.

In Lugubre Tenebris is a funeral doom metal/drone, dungeon synth project from Cuneo, Italy, active since 2025 and crafting glacially slow, suffocating heaviness at the most oppressive tempos in extreme metal. The project plumbs the depths of despair through crushing, extended compositions.

Melodic heavy metal band from Helsinki, Finland formed in 2020. Their sound channels classic melodic heavy metal from the Finnish capital.

In Memoriam is a black/death metal band from Berlin, Germany, active since 2013, merging the atmospheric intensity of black metal with the crushing heaviness of death metal. The band has spent over a decade building a body of work in Berlin's diverse extreme metal underground.

In Memory is a melodic death metal band from Piombino (Livorno), Italy, active since 2020 and blending melodic harmonies with death metal aggression. The project channels the twin-guitar traditions of Scandinavian-influenced melodeath.