Retrogression Keeper Books in Order

Retrogression Keeper shifts the action away from dungeons and into a cosmic bureaucracy that manages entire worlds. Where many of Brooks’ protagonists wake up as cores, Bax starts as an ordinary human who is told his planet is about to be rolled backward.

The Retrogression System, an organization spanning multiple powerful races, has decided to induct Earth into its cycle. That process will strip away advanced technology, unleash monsters, and force surviving humans to adapt or die. By the time Bax understands any of this, it is already in motion.

He is pulled off Earth and into a training program for Keepers, individuals meant to protect and guide worlds through their Retrogression phases. On paper, his path is clear. Learn the rules, master the system, and eventually return as a Keeper Guide who can train future human defenders.

Reality refuses to stick to the script. Bax arrives sick with the flu, spends his first stretch in this new place confined to a room, and emerges to find the Cooperative that runs the training apparently abandoned. The other recruits and all of the instructors are gone. The systems still function. The monsters and threats the Keepers were meant to handle have not gone anywhere. The people who were supposed to teach him are simply missing.

Left alone with an overpowered set of abilities and a manual that does not cover this situation, Bax has to bootstrap his way into competence. He experiments with the Retrogression interface, tests his limits, and tries to piece together what happened to the organization that drafted him.

Retrogression Keeper blends the solo grind of a progression fantasy with the wider stakes of a world level threat. It is a good fit if you like overpowered main characters who still have to think carefully about how they spend their advantages, and if you are curious how Brooks handles a system that governs planets instead of individual dungeons.