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:
“But for the national welfare, it is urgent to realize that the minorities do think, and think about something other than the race problem.”
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—Edward Dahlberg (1900–1977)