- Release: November 19, 1998
- Genre: Action
- Publisher: Valve
- Website: http://store.steampowered.com/app/70/
Named Game of the Year by over 50 publications, Valve's debut 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.