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 come to your senses in a dank musty jail cell... It seems to have been constructed rather hastily in a storage and maintenance room, you realize your predicament with only one thing on your mind... escape.