Operation: Black Mesa
First Person ShooterOperation: Black Mesa is a fan-made reimagining of Gearbox's Half-Life™ Opposing Force and Half-Life™ Blue Shift.Two Campaigns in One
Development of Z.O.H.R.N has been discontinued (2013)
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Operation: Black Mesa is a fan-made reimagining of Gearbox's Half-Life™ Opposing Force and Half-Life™ Blue Shift.Two Campaigns in One
Fight to survive the horrors from the world beyond, in this Singleplayer and Multiplayer First-person shooter set in the Half-Life universe.
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