The Frozen Throne continues some of the loose ends of the original game, as well as spins off some new plots of its own and paves way for the new conflict of World of Warcraft, as well as set plots further explored in World of Warcraft's expansions: World of Warcraft: The Burning Crusade and World of Warcraft: Wrath of the Lich King. The Frozen Throne takes place approximately one year after Warcraft III: Reign of Chaos, whilst World of Warcraft takes place three years after the events detailed in The Frozen Throne.
Released in stores worldwide in multiple languages beginning on July 1, 2003, it details Arthas' transformation into the Lich King, Illidan's awakening of the naga, the conversion of the blood elves, the breakdown of Horde- Alliance relations in Kalimdor, and more.
Warcraft III: The Frozen Throne is an expansion pack of Warcraft III: Reign of Chaos developed for Microsoft Windows, Mac OS and Mac OS X by Blizzard Entertainment. Were you looking for the core RTS game Warcraft III: Reign of Chaos?