- 平台: PC
- 游戏引擎: Source
- 游玩人数: 1人
- 发行日期: 未定
- 开发: Tripmine Studios
- 发行: 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.
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