The Complete Training Diaries (Origins, Descendant, Existence)

All three thrilling volumes of Endgame: The Training Diaries, prequel novellas to the New York Times bestselling Endgame series, together in one paperback bindup!
Before they were Players … Before the Calling … They trained to be selected as the one to save their ancient bloodline—and win Endgame.
Follow the Twelve through sacrifices and betrayals, broken hearts and broken bones, as they shed their normal lives and transform into the Players they were meant to be.
They must train, learn, prepare. To Play, survive, and solve. To kill or be killed.
Endgame is real. Endgame is coming. And only one can win.