The Real Game Designer

Billions of years later, humanity experienced a technological explosion, inventing a miraculous real-world game editor. This editor could create realistic, material game worlds, allowing players to experience vibrant and diverse environments as if traveling through time. Players could bring real-world items into the game world and also bring various magical items or abilities from the game into reality. But what would happen if this amazing real-world game editor were accidentally obtained by a modern person billions of years in the future? [This story takes place on a parallel Earth. Any resemblance to actual persons, living or dead, or actual events is purely coincidental.]