Eternal Nightmare is the debut studio album by American thrash metal band Vio-lence. It was released in 1988 on Megaforce Records. The album has been well received by critics and is considered a classic of the thrash metal genre. It features fast, aggressive guitar riffs, powerful vocals, and intense drumming. Some popular songs from the album include "Eternal Nightmare," "Oppressing the Masses," and "Seen Between the Lines."