I played this once in college back in 2009 and it spooked the daylights out of me. I played it on a friends computer and by the time I had my own, years later, I had forgotten about it. But then I saw it on GOG and I had to pick it up. It's every bit as good as I remember. An absolute CLASSIC FPS that no gamer should go without. Everyone needs to climb that ladder at least once...
