Those who plan on purchasing the PC version of Metro: Last Light are receiving a special bonus, a digital novel entitled, "Metro 2033." Purchasers can access the novel when they authenticate their purchase on Steam.

Metro 2033 was the novel that inspired the video games. Author Dmitry Glukhovsky also penned the plot for Metro: Last Light. Those who want deeper insight into the story about a post-apocalyptic wasteland in Moscow should be sure to check out Metro 2033.

Metro: Last Light releases on May 14 for PC, Xbox 360, and PlayStation 3.

For more on Metro: Last Light check out the latest survival guide and developer diary