Warcraft : Orcs and Humans was a real-time strategy game . So were Warcraft 2 and its add-on , Warcraft 2 : Tides of Darkness and Warcraft 3 and its add-on , Warcraft 3 : The Frozen Throne .
World of Warcraft shares the Warcraft title with the Warcraft series of real-time strategy games , is set in that series ' world of Azeroth , and has similar art direction .