Tom Clancy's Rainbow Six 3 (Xbox, 2003)

I have to say I really enjoyed this game. Not too technical or complicated and really fun to play. This was the first squad based shooter I played where you lead your squad of three other members on 14 counter terrorism missions all over the world. I thought the graphics were good as were the sounds of the game. A game like this needs to be played in surround sound if you have it. The enemies are not hard to hit, but with your surroundings and number of bad guys to come at you and your team, I think this makes up for it.
You are in control of Team Rainbow and your job is to take out a terrorist organization threatening the peace between the U.S. and Saudi Arabia, who controls oil from that region.
This game also allows for voice commands through the xbox headset which I did not get the chance to play but sounds cool. The game has a rating of Mature (17+) on account of blood and violence.
If you want to be a part of securing the world and help defeat terrorist all over the world this game is for you. One of the first in the Tom Clancy series and still a favorite to play.
You have your mission, go get'em.