Operation: Black Mesa is a total Source remake of Half Life: Opposing Force. Using the Source engine, the developers plan to recreate the Black Mesa research Facility as it was seen by Corporal Adrian Shephard of the H.E.C.U. Half-life: Opposing Force is still an amazing game, although it is not nearly as amazing as it was when it was released.
May Media Release
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This part was fun.
I also think that biodome is the greatest part of OF.
So.. this is the part where you get the Barnacle, right? :D
btw, awesome work guys ^_^ I'm really looking forward to this mod, keep it up ^_^