What is stellaris cybrex?

The Cybrex are a precursor civilization in the game Stellaris. They are a machine intelligence race that was once highly advanced, but has since disappeared. The Cybrex ruins can be found on many planets in the galaxy, and they contain powerful artifacts and advanced technology that can be used to upgrade the player's own empire. The Cybrex are also the focus of a player questline that involves discovering the fate of the civilization and potentially reviving it. Overall, the Cybrex are a mysterious and powerful force in the galaxy that can greatly impact the player's strategies and gameplay in Stellaris.