Command and Conquer: Generals – Zero Hour is an expansion pack for the real-time strategy game Command and Conquer: Generals. The expansion pack was first released in 2003. The expansion pack features three new campaigns for the game. These are:
• USA – In this campaign, the USA fights against the GLA (Global Liberation Army) to stop the deployment of missiles containing a new variant of anthrax called Anthrax Gamma.
• Global Liberation Army – The GLA gets a new commander, General Mohmar. The group’s aim is to harm the USA and drive them away from Europe.
• China – The China campaign focuses on the Chinese People’s Liberation Army to plot revenge against the Global Liberation Army.
Each of the campaigns has five missions each. Players must go through the campaigns in chronological order to follow the storyline of the game. The storyline of this expansion packs is set after the events in Command and Conquer: Generals. One of the main features of the game is the addition of Generals’ Challenge, which is a new mode of game play. In this mode, the player assumes the role of one of the nine general and must defeat the other generals. After defeating the other generals, players must confront the boss, General Leang.