Get the puzzle game Portal free for your Mac or Pc computer for a couple more days! Usually portal would cost $19.99, but currently it is free!
Thank you to robotafterall for posting about this on the community forum.
About the game:
Portal is a single player game from Valve. Set in the mysterious Aperture Science Laboratories, Portal has been called one of the most innovative new games on the horizon and will offer gamers hours of unique gameplay. The game is designed to change the way players approach, manipulate, and surmise the possibilities in a given environment; similar to how Half-Life® 2's Gravity Gun innovated new ways to leverage an object in any given situation. Players must solve physical puzzles and challenges by opening portals to maneuvering objects, and themselves, through space.
Portal is free through the 20th, September 2011. Get it while you can.