Race X is a hostile, non-Xen alien race. They appear only in the Opposing Force expansion pack, and very little is revealed about them. Race X aliens appear late in the timeline of Half-Life, a few hours before Gordon Freeman teleports to Xen.
Read more about this topic: Creatures In The Half-Life Series
Famous quotes containing the word race:
“No person who examines and reflects, can avoid seeing that there is but one race of people on the earth, who differ from each other only according to the soil and the climate in which they live.”
—J.G. (John Gabriel)
“You cannot have Liberty in this world without what you call Moral Virtue, & you cannot have Moral Virtue without the slavery of that half of the human race who hate what you call Moral Virtue.”
—William Blake (1757–1827)