This is what we found on Wikipedia regarding the Dungeon Crawler Carl:

Dungeon Crawler Carl is a science fantasy LitRPG book series written by American author Matt Dinniman. Initially self published by Dinniman via online publisher Royal Road, it and its six sequels were acquired by Ace Books in 2024.

The series follows Carl and his ex-girlfriend's cat, Princess Donut, two of the few survivors of the mining, transporting, processing, and consumption of Earth's resources by an alien corporation, as they are forced to compete in a dungeon crawl recreated from those resources for an intergalactic reality show program. As of December 2025, the first seven books have sold over six million copies, and there are plans for a television adaptation, graphic novels, audio programs, a card game, and a tabletop role-playing game.