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

You are playing a modification which is using realistic textures and map design. Some buttons are hidden therefore you have to find them first to answer the question system. You can decide between answer A, B or C. If you activate the wrong letter you can hear some people laughing, you will explode, aliens will appear or the answer was the right.

Preview
G-man House
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