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.
The sand seems a little flat in some areas, particularly the bottom left corner. If you're aiming toward the original, it might help to add a 3D skydome with mountains and cliffs in the background.
Oh wow this is amazing!
Love the lighting and I really like the design on those buildings!