Following the rise of 3D gaming environments due to the ready availability of high performance 3D-enabled video cards, Doom graduated from simple polygons and sprite technology to completely immersive environments in Doom 3. I had this game in mind when I built a new PC around an nvidia GeForce 6800 Ultra video card in 2004.
Doom 3 takes place on Mars in the future. A scientist experiments with the occult and unfortunately releases demonic forces that you have to defeat in order to survive. This was the first game that I enjoyed the exhilaration and fear of while playing in the dark.