Medal of Honor: Allied Assault for Windows

Look, I'm no expert on PC games. I've played maybe nine or ten over the last six or seven years, mostly first person shooters like MOH, Call of Duty, and Half Life. I've loved all three of those games, but of the three, I've always been thankful to MOH because it was such a quality game it really got me into trying out some of the others. Yes, the story is pretty linear, that's not really a problem for me. I just like moving forward and taking on new challenges, then moving on to the next. The action is incredible, and there are certain scenes, such as the invasion at Normandy or the airborne assult on D-Day that will leave you breathless.

You can get this game very cheaply now, so if you haven't tried it and want a great introduction to WWII first person shooters, do yourself a favor and try it out.