Nödtveidt also performed in several other projects, including The Black (as Rietas), De Infernali, Nifelheim, Ophthalamia (as Shadow), Satanized, Siren's Yell, and Terror, a grindcore band which featured members of At the Gates.
In 1996, the band recorded the Vulcano cover "Witches Sabbat" with guest vocalist Goat (ex-Satanized) for the second Headbangers Against Disco split EP which also featured Usurper (de) and Unpure, and the song "Hellish Blasphemy" for the Gummo soundtrack; the latter was re-recorded for the band's second album, Devil's Force, which featured Zweetsloot and Nödtveidt again.