There is a whole book series based on the GSC's S.T.A.L.K.E.R. game series. So far, they are only available in Russian. The first book is called S.T.A.L.K.E.R. Shadows of Chernobyl (Russian: Teni Chernobylya). It features a couple of stories written by different authors and fans of the game series. Later, as the game gained more and more fans, the book series became a hugely successful franchise. However, most of the novelisations don't follow the game storyline, neither are the books connected to each other.