Tannenberg is a squad-based multiplayer first-person shooter video game set during World War I. It is a standalone expansion to Verdun, and entered Steam Early Access on November 17, 2017.[1][2][3][4] Tannenberg left Steam Early Access on February 13, 2019.[5][6] It was released on PlayStation 4 and Xbox One on July 24, 2020.[7][8][9] [10]