As a promotion, the cool game “Portal” is now available for free on Steam (http://www.steampowered.com/)!
Portal is a mind-blowing game utilizing the Half-Life 2 engine and focusing on puzzling, instead of shooting things. In this game, you have a portal cannon that you can use to open, err, yes, portals. These obey the law of physics (if you throw something onto a portal on the floor, it will fall through) and are used for all kinds of very tricky puzzles.
Portal is a very nice casual game, with a steep learning curve and lots of mind-boggling tricks to it. You should download it now – the promotion only lasts until 24th of May
Tags: Portal Steam Half-Life 2