"Extreme Aggression" is the fourth studio album by the German thrash metal band Kreator, released on June 19, 1989, through Epic Records and Noise Records. This album showcases the band's evolution within the metal genre, characterized by aggressive riffs, intricate solos, and powerful vocals. With a total of nine tracks, "Extreme Aggression" is noted for its intense sound and lyrical themes that explore social and political issues. The album features notable tracks such as "Betrayer," "Extreme Aggression," and "Some Pain Will Last," which highlight Kreator's signature blend of speed and melody. The production quality marks a significant improvement from their earlier works, contributing to a more polished and robust sound that resonates well with both hardcore and mainstream metal audiences. "Extreme Aggression" has been influential in the thrash metal scene, solidifying Kreator's position as one of the leading bands in the genre during the late 1980s. The album continues to be a reference point for metal enthusiasts and scholars exploring the history and progression of heavy music.