This is a World War II FPS, while it's an older game it's also a fun one.

You are either Axis or Allies competing against each other on various battlefield.  You have weapons of the period, and if there is a vehicle (trucks, tank, planes, or ships) you can drive, fly or sail it. 

We are currently running v1.61b, so you can find the updates links below, after you install the BF1942, download and install in order and you should be fine.

1.  BF1942 1.6.19 patch
2.  BF1942 1.6 to 1.62b patch

Note - A common issue we've run into with this game is having it crash while loading into multiplayer maps, make sure that you go in and save your video and sound settings.  While this doesn't work for every case on every map, it helps with the majority of the games and game mods.