RTCW is an instant classic that will always have a special place in my heart. Hailed as a masterpiece in its prime, the game helped shape FPS games into what they are today. The AI, graphics, and multiplayer made this a solid title in its time, and many still enjoy this game to this day. While its predecessors made Nazi killing fun, this one made it into an art.

Update: Still visit this once a year, even with the wonderful new Wolfensteins out. They are all great, but this one is still my favorite