FPSTime.com has a terrific look at how the first person shooter genre has evolved graphically in the last thirty seven years. Starting with 1974's Maze War and wrapping up the retrospective with 2011's Call of Duty: Modern Warfare 3, it's a terrific look back. Be sure to check it out!
FPS video games are caracteristic (sic) of the video game evolution: they usually have the best graphics, the best innovation, the best technologies and are leading the multiplayer innovation. Through this short list of FPS games classified according to their release date you will see some of the most important evolution, how some famous games may look better or not than other games of the same year and how graphics have evolved along the years!
Read more and check out the screens at the link above.