In a huge facility hidden underneath the ocean, an army of robots continues to carry out the final orders of humanity. Waiting for the humans to return, the work tirelessly in decaying factories. But now, decades after the humans left, something has changed. Some robots have started to express their own free will. Will these self-aware robots save the Collective - or lead it to its final downfall. This is the second major expansion to Mutant: Year Zero, the award-winning post-apocalyptic pen & paper roleplaying game by Free League Publishing. Mutant: Mechatron tells the origin story of the robots, and introduces them into the dawnworld of Mutant: Year Zero. Some of the content:New rules for creating and playing robots. A unique system lets you build your machine character part by part. The book includes all the rules you need to play! A detailed description of Mechatron-7, the huge underground robot hive, including a beautiful full-color map. The complete campaign Ghost in the Machine, putting the player characters in the middle of a conflict threatening the future of the entire robot hive. An overview of how the robots can adapt to life in the Zone, and join the human mutants of Mutant: Year Zero.