In Anomalous Materials, the player gets their first chance to explore the innards of the Black Mesa Research Facility. No real threat is present during this sequence (although falling from a high place may cause harm). This chapter orients the player in Half-Life's world, and foreshadows the coming disaster in several sequences involving equipment malfunctions.
The NPCs encountered along the way will all have an unique story to tell, which can be learned by the player either by interacting with them or through observation.
Anomalous Materials has two maps connected by one load point: bm_c1a1a (starting in the lobby and ending in the elevator to the lowers labs) and bm_c1a1b (starting in the elevator and lasting through the Test Chamber sequence).
