Act of Depression is the debut album by Underoath. Released July 4, 1999, through Takehold Records, the album was out of print for some time as there were only 2,000 copies originally released. Solid State reissued this album alongside Cries of the Past on August 20, 2013.
The style of this album has been described as hard hitting Christian metal, stylistically featuring a mix of metalcore, death metal, and black metal.
The hidden track "Spirit of a Living God" begins with commentary by lead guitarist Corey Steger speaking about his description about God, talks about receiving Jesus Christ and that he dedicates the album to those that were victims to rape, suicide and depression. It features drummer Aaron Gillespie in the background of the commentary singing along with an acoustic guitar. It later leads to the song itself which is an acoustic rock song that features singing vocals by Gillespie.