Half-Life

Valve | Sierra Entertainment |

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.

Description

(5 maps) You start in the future and have to travel back in time to stop Dr. Slick. Difficult maps, the mission is to destroy Slick's research center, he are researching xen aliens genetics and making they more dangerous (like the undertime boss) to use they for he's world domination plan.

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Undertime
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