Hey, catch me later I'll buy ya a beer!

[Only set within HL1 either prior to Resonance Cascade or after]

Be an HECU, a Security Guard, a scientist or even an Alien within the HL1 universe! Be it before the incident or during, everything is up to YOU and events may play out differently! Perhaps the HECU will help the staff, or maybe Barney will give you that beer he owed you. Black Mesa is up to YOU to traverse and explore.