It’s time for one last fantabulous challenge with Mr. Lemoncello-the world’s most famous gamemaker! This time everything is on the line—literally! Mr. Lemoncello has invited thirteen lucky 13 year-olds—including his biggest fan, Kyle Keeley— to compete in the final games. The winner of these games will become the new owner of Mr. Lemoncello’s ENTIRE GAME MAKING EMPIRE!!! But uh-oh–someone is trying to destroy Mr. Lemoncello empire and all it stands for: imagination, games, books . . . knowledge! Can Kyle Keeley stop them and make his dreams come true?