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.
Walk up to the room with the buttons. In a few seconds there will begin to fall arrows from the sky. When the arrows are near the pads, press the correct button. For example if it's coming an arrow pointing to the left, press the left button. The barney in the middle is your life bar. When he dies , you have lost. You get it, right?