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.
HD Pack for Hevs and Barney Players. It's very easy to make them appear in the game. Just Copy all of them into Valve\models. They're all from Half-Life: Induction and Half-Life: Sven Co-op. I made this just because i think there will be people who had no idea how to have HD Players even they've GOT them in their mods.