Black Mesa is set in and around the Black Mesa Research Facility as depicted in the original Half-Life game. The research facility is a former Cold War missile complex based in New Mexico, and features a diverse array of locations ranging from abandoned rocket testing silos to modern administrative offices, from underground physics laboratories to a full-scale hydroelectric dam. The game continues beyond, into an inter-dimensional border world known as Xen.

Hazard
Course

Black Mesa
Inbound

Anomalous
Materials

Unforeseen
Consequences

Office
Complex

We've Got
Hostiles

Blast Pit

Power Up

On a Rail

Apprehension

Residue
Processing

Questionable
Ethics

Surface
Tension

Forget About
Freeman

Lambda Core

Xen

Gonarch's
Lair

Interloper

Nihilanth

End Game