Simple Setting of Unlimited Worlds

In some man-made systems, there are only simple settings, but infinite worlds can be created based on them, such as cellular automata and Minecraft. And if a fantasy world is built on a simple setting, what will it look like? Liao Meng, a young man in the robotics industry, entered a fantasy world game in his sleep... This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.