This is the Scientist Slaughterhouse installer. Just install and play. Also includes 2 bonus mods: Big Scientists, and Scientist Hunt!
An official demonstrational application of Half-Life, released in October 1997 and including 12 videos and over 30 screenshots.
English: This is a package that includes a Goldeneye Mod for Half-Life in its latest version 1.9 beta and is compatible with steam. It also has some extra maps that are not in the Original Package.