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Operation: Black Mesa
Tripmine Studios·
Experience the Half-Life expansion packs like never before. Operation: Black Mesa features reimaginings of both Half-Life: Opposing Force and Half-Life: Blue Shift through two unique campaigns. How will you survive the Black Mesa Incident? It's time to choose.
Also known as: Opposing Force: Source, OBM, Guard Duty, Blue Shift: Source, O: BM, O:BM, Operation Black Mesa, Operation: BM
Half-Life: Opposing Force
Operation: Black Mesa is available on PC (Microsoft Windows).
No — Operation: Black Mesa is a single-player game.
Operation: Black Mesa was developed by Tripmine Studios.