Fans of 4A Games Metro: Last Light might want to give the original a try as Metro: 2033 is free to all via Deep Silver and The Humble Store.
In celebration of The Humble Store one year anniversary they are giving away Metro: 2033 free for 24 hours. The promotion ends tomorrow, November 8th at 10 am PST. Those who want to capitalize on this promotion can either gift it or get it for themselves by simply going to The Humble Store and entering their email address next to the Metro: 2033 logo.
Metro: 2033 is based upon the Dmitry Glukhovsky novel of the same name. It is a survival horror first-person shooter. Players control Artyom as he ventures across the underground of a post-apocalyptic Russia where nefarious creatures roam the surface and not so friendly people are also in the underground. The game was successful enough to warrant a sequel in the praised Metro: Last Light.
Remember it only lasts 24 hours so get on and get your free copy to enter the Metro via The Humble Store.