Metro: Last Light Complete Edition is currently free to keep from Steam
Free is free and spooky shooter Metro: Last Light is currently free to keep from Steam. It has been made available by developers 4A Games in order to celebrate its 10th anniversary. The catch, sort of, is that this is the Complete Edition, a version that does not normally even show up in Steam search results. The slightly-improved Metro: Last Light Redux will still cost you a few quid or bucks.