Formed from cold steel and superpowered computing brains, these gigantic tanks with the firepower of an entire army have been the decisive factors in interplanetary battle. But are humans worthy of the extraordinary instruments of war that they have created? Are the Worldbreakers the greatest protector of human liberty, or its worst threat? For, while these Worldbreakers very definitely have minds of their own, the question remains: within their iron and superluminal quantum breasts, does there lie a faithful heart? Stories of world breakers and world makers in the great tradition of Keith Laumer’s Bolos from David Weber, Larry Correia, Wen Spencer, and more!