where does the game of thrones books end
With a planned seventh novel "A Dream of Spring"
A Song of Ice and Fire
 Martin, who initially envisioned the series as a trilogy, has published five out of a planned seven volumes. The fifth and most recent volume of the series, "A Dance with Dragons", was published in 2011 and took Martin six years to write. He is currently writing the sixth novel, "The Winds of Winter". A seventh novel "A Dream of Spring" is planned.

wiki:7739249
A Song of Ice and Fire [SEP] Introduction
"A Song of Ice and Fire" received praise for its diverse portrayal of women and religion, as well as its realism. An assortment of disparate and subjective points of view confronts the reader, and the success or survival of point-of-view characters is never assured. Within the often morally ambiguous world of "A Song of Ice and Fire", questions concerning loyalty, pride, human sexuality, piety, and the morality of violence frequently arise.