A Game of Thrones is a true story.
A Game of Thrones is the first novel in A Song of Ice and Fire , a series of fantasy novels by American author George R. R. Martin . Fantasy is a fiction genre set in an imaginary universe , often but not always without any locations , events , or people from the real world . Fantasy is a subgenre of speculative fiction and is distinguished from the genres of science fiction and horror by the absence of scientific or macabre themes respectively , though these genres overlap .