Breakdown

Breakdown is the sixth book in the Remnants series by K.A. Applegate.

Back Cover Summary
Jobs, Mo'Steel, 2Face, and the remaining Remnants struggle to survive in a world that is barely real. And now, they must challenge Mother, the powerful computer that creates the nightmare worlds in which they are forced to survive – or not.

The few who have tried to face Mother have failed terribly. Only Billy, whose mind stayed awake for 500 years, has been able to form a powerful bond with her. Now, Yago has decided to let her delve into the depths of his slightly twisted mind, and a full-on computer-generated battle ensues.

It doesn't take long before the Remnants realize that if Mother has the ability to generate new environments–new worlds – she could create a computer-generated Earth. The question is: At what price?