Warcraft III: Reign of Chaos (War3 or WC3) is a real-time strategy computer game released by Blizzard Entertainment in July 2002. It is the second sequel to Warcraft: Orcs & Humans, the third game set in the Warcraft Universe.
The game proved to be one of the most anticipated and popular computer game releases ever, with 4.5 million units preordered and over one million additional units sold within a month. Warcraft III won many awards including "Game of the Year" from more than six different publications.
Warcraft III contains four playable races: Humans and Orcs, which had previously appeared in Warcraft: Orcs & Humans and Warcraft II: Tides of Darkness, and the Night Elves and Undead, which are new to the Warcraft mythos. Warcraft III's campaign is laid out similarly to that of StarCraft, being told through all four of the game's races in a progressive manner.
An expansion pack, The Frozen Throne, was released in 2003. Later on, the Warcraft III Battle Chest was released, which includes both games in the same box.