Telltale Games (the studio behind episodic smash-hit The Walking Dead) announced some time ago that they would be giving George R. R. Martin’s fantasy novels the episodic adventure game treatment. Game of Thrones – A Telltale Games Series is based off the HBO TV series, but it will be using House Forrester as its entry point.
House Forrester has not appeared in the HBO series, but the northern house (which holds allegiance to Winterfell and the Starks) is canon from Martin’s A Song of Ice and Fire novels. They first make an appearance in the book A Dance with Dragons. The events of Telltale’s episodic adventure game will take place between the end of season three and the start of season five of the HBO series. Season five is scheduled to begin broadcasting during our autumn 2015, and will be based off A Feast for Crows and A Dance with Dragons.