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.
A Weapon Test for the upcoming mod. In the year 20XX, a space station near the Moon discovered a moon parasite, when they contained it in their station, a Scientist broke the protection causing a Infestation in the Space Station, You play as Dr. Frank Nyström and you have to escape before you become one of them.
It's not necessary put in ZIP common Half-Life files, if you're talking about MOD. Though it seems like all other files are also not made by you... So you just released other people's work without proper credits.