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 will be taught how to use the entity; "Func_Door_Rotating". Pretty easy :)
In this tutorial, you will be taught how to make the blue areas on textures e.g. fences, air-ducts and so on, and so fourth, invisible.
This tutorial will teach you how to edit the ammo per clip, how fast you walk with a weapon and much more! Check it out... For Half-life 1