One of the best parts of the new Xen chapters in Black Mesa is how it really expands upon the concept of the borderworld Xen having its own ecosystem. In one such instance, Freeman travels through a thick jungle of sorts, populated by Houndeyes, bullsquids, Xen trees, and Ichthyosaurs. We see how each species seems to interact with each other, and how most of the creatures encountered and fought within the Black Mesa facility are just animals trying to survive and defend themselves.
Joel Nielsen's "Entangled" track really hits home the feeling that while Freeman is possibly billions of lightyears away from home, the new world he finds himself in is still ultimately just a home for these misunderstood creatures.
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