Named Game of the Year by over 50 publications, Valve's début title blends action and adventure with award-winning technology to create a frighteningly realistic world where players must think to survive. Also includes an exciting multiplayer mode that allows you to play against friends and enemies around the world.
You are Gordon Freeman and you are now a soldier in the administrators MR.G-man army. You base is on a space station, A attack on one of the earth installations send you on a mission.