Summary:
- "Second Stone: The Legend of the Hidden World" is a preview of a new tabletop role-playing game (RPG) set in a fantasy world.
- The game features a unique "hidden world" mechanic where players can discover and explore a secret realm parallel to the main game world.
- The article provides details on the game's setting, characters, and mechanics, suggesting it would be of interest to tabletop RPG enthusiasts.