Editing Command and Conquer (section)

===Tiberium===
A key element of the series is '''Tiberium''', an alien substance which is slowly xenoforming the Earth, destroying the ecosystem but also giving mankind unique industrial and scientific possibilities: a key feature of this xeno-element is that it it can ''make more of itself'', explained by one designer as being able to move the subatomic particles of whatever it comes into contact with either up and down the periodic table, until it becomes Tiberium. Because of this, Tiberium crystals are often chockfull of more valuable rare elements (which is what the GDI is after) locked inside it. This also makes Tiberium incredibly dangerous, since constant exposure slowly crystallizes your insides, or worse, turns you into something more...[[Chaos Spawn|adaptable]]. The Brotherhood of Nod, besides their worship of Kane, considers Tiberium to be the next step of human evolution, with some embracing the potential technology uses or infusing it into themselves in a semi-stable way (the Brotherhood uses Tiberium Infusion to give themselves immunity, while the Marked of Kane can reanimate their dead using Tiberium-powered technology), still others, like the Black Hand, see it only as a tool for mankind's ascension while keeping the human body inviolate. 

By the fourth game, Tiberium has managed to xenoform the entire planet, only remaining habitable for humans in select areas because of Kane's alliance with GDI. It is heavily implied throughout the series that Kane propagated the spread of Tiberium and the arrival of the Scrin so that he can escape Earth, but the actual connection between all three is unclear (and will likely never be explored since the death of the series).

While it's not as influential on pop culture as [[Dune|Spice]] or as ubiquitous as Adamantium, Tiberium is still a pretty good Mcguffin for both fantasy and sci-fi settings, giving you an alien or fantastical source of free energy/alchemical components without having your players dig up Uranium