Command & Conquer 3: Tiberium Wars

One day a meteor fell on Earth, spreading a new substance called Tiberium. This substance was unusual and powerful, yet highly dangerous since it turned anything it touched into Tiberium itself. By 2047, Tiberium has spread and infested most of the Earth's surface, causing an ecological catastrophe. Red Zones are areas rendered inhabitable due to the severe Tiberium infestation and constant Ion storms, covering 20% of the planet's surface. Yellow Zones are areas infested by Tiberium but they hol...