The Tiberian system refers to a series of fictional events and settings within the popular video game franchise, Command & Conquer. It primarily revolves around the conflict between two factions: the Global Defense Initiative (GDI) and the Brotherhood of Nod. The narrative is set in a future where a mysterious alien substance called Tiberium has spread across the Earth, leading to significant ecological and societal changes. In the Tiberian universe, players engage in real-time strategy gameplay, managing resources and commanding units in battles. The series explores themes of technology, warfare, and the consequences of human ambition, with notable characters like Kane, the enigmatic leader of Nod, playing pivotal roles throughout the storyline.