Releases by store
| Store / edition | Play on | Release | Price |
|---|---|---|---|
| Steam | PC | Not announced | — |
About this game
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.
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