The expansion and its subsequent patches made the addition of neutral Hero units.

New item mechanics were added, such as the neutral Marketplace, which sells a rotating inventory of items, player built shops, and inventory upgrades for non-hero units.

(Such maps became unpopular and were removed from the ladder selection). Most aquatic mechanics were only available in the single-player campaign, but some creeps and the neutral Goblin Shipyard made island maps a viable template in melee matches.

The Frozen Throne reintroduced naval units into the game, (they had been present in Warcraft II but were absent in Reign of Chaos) as well as amphibious creatures.

Gold and lumber costs were recalculated, generally requiring more lumber for high-tech buildings and units consequentially, the population limit was been increased from 90 to 100 to accommodate additional lumber-gathering workers.

Wyvern Riders were renamed Wind Riders, but the unit was otherwise unchanged.

The old siege engines of the humans, orcs and night elves have been renamed and remodeled, receiving new upgrades in the process.A smaller race, the Draenei, have also been included, though they can only be played in an Alliance mission and custom maps. The entirely new race ' Naga' has also been added, and can be played in several Sentinel and Alliance missions, as well as in custom maps.For each race, The Frozen Throne adds several new units, buildings and upgrades, and one new hero per race.2.4 Bonus Campaign: The Founding of Durotar.2.3 Scourge Campaign: Legacy of the Damned.2.2 Alliance Campaign: Curse of the Blood Elves.2.1 Sentinels Campaign: Terror of the Tides.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 1 July 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 (sometimes abbreviated to TFT) is an expansion pack of Warcraft III: Reign of Chaos developed for Microsoft Windows, Mac OS and Mac OS X by Blizzard Entertainment.

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