Half-Life: Day One

Half-Life: Day One is the first demo of Half-Life. It was designed exclusively for OEM partnership and was often bundled with graphics cards. It was never available to the general public. Half-Life’s actual demo (available free to the general public), Half-Life: Uplink, was released several months after Half Life: Day One.

Story
The story follows the original game and ends in the chapter "We've Got Hostiles".

Weapons

 * Crowbar
 * SMG
 * Shotgun
 * Hand grenade

Allies

 * Scientist
 * Barney

Enemies

 * Barney (if shot at)
 * HECU
 * Zombie
 * Barnacle
 * Bullsquid
 * Headcrab