C & C 4 ENDING SPOILER BELOW
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Tiberian Twilight is the final game in the Tiberium Universe to feature Kane. It has a sterner and more mature tone compared to previous games in the series, even though the gameplay itself is more cartoonish. The prologue to the game takes place in the year 2062, 15 years after the events of Tiberium Wars which led to the invasion and defeat of the Scrin, and 10 years after the final events of Kane's Wrath, where the prophet regained possession of the Tacitus (an alien data matrix supposedly created by Kane himself). During this time period, Tiberium has evolved and is spreading at such a rate that the whole planet is expected to become uninhabitable by 2068. Humanity is on the brink of extinction.[7]
At this time of crisis, the leader of the Brotherhood of Nod, Kane, heads straight for the headquarters of the Global Defense Initiative,[4] in hopes of using the Tacitus and GDI's resources to construct a worldwide Tiberium Control Network, which would allow the spread of Tiberium to be controlled, as well as turn it into an inexpensive power source. Even though the idea of alliance was met with hostility by many (which sparked a brief Incursion War conflict), the two factions have nevertheless united. The campaign itself starts 15 years after the formation of the alliance between the two factions, as the Tiberium Control Network is nearing completion, and the spread of Tiberium is finally stopped, bringing the light of optimism to the world's remaining population. However, extremists from both factions cause unrest, which sparks the Fourth Tiberium War. The player takes the role of commander Parker, a GDI military officer who receives an optical implant after his battle wounds cause him to lose his sight. The player will be presented with the possibility to aid either Colonel Louise James' GDI extremists or Kane's Nod Loyalist forces during the Fourth Tiberium War. Both campaigns' events are considered canon, even though some details of characters' interactions are different.
The game's missions chronicle Kane's attempt to activate the Threshold 19, a tower constructed by Scrin aliens during the Third Tiberium War, which functions like an interstellar portal. Kane is revealed to be a being (of probably extraterrestrial origin) who was somehow stuck on earth many thousands of years ago; His uncanny regenerative abilities are confirmed, as he is able to easily survive gunshot wounds. He is very anxious to leave Earth through the "ascension" that he plans to bring about using the tower, and claims to have used the Tacitus to create both the Tiberium Control Network and the optical implants; these are, in fact, the keys to the activation of the tower. While the GDI and Nod are officially allied, two groups of separatists desperately try to spark a war to stop (or punish) Kane. The Nod separatists are led by the madman Gideon, while the GDI side is commanded by Louise James.
After the final battle for the Threshold 19, Kane is finally about to leave Earth using the Scrin tower. He convinces Commander Parker (the player) to activate it for him, as the other four implant recipients had been hunted down and killed by Gideon. However, before activating it with the optical implant, the player is mortally wounded by Colonel James, but succeeds in activating the portal nontheless. Kane promptly thanks the player before entering it in both campaigns. After Kane transverses the portal, the commander succumbs to his wounds and dies. With Kane fulfilling his "ascension" and disappearing from Earth, the Tiberium growth recedes following the complete activation of Tiberium Control Network. In the ending cut-scene, news channels announce that all Nod followers have strangely disappeared as well after entering the Scrin tower, which leads to the conclusion that Kane's promises of ascension for all of the Brotherhood of Nod were, at least partially, real.
The Tiberium Universe may continue beyond Command and Conquer 4, though this installment ends the Kane story arc.
