Location from Undertale / Deltarune by Toby Fox
Ralsei's kingdom — a Dark World hub that starts empty and fills with Darkners from every sealed fountain, becoming the one place in the dark that feels like home.
Castle Town is Ralsei's domain — the place he waited alone for the heroes of prophecy. Initially empty, it fills with Darkners from each sealed Dark World, creating a growing community. Lancer, the Card Kingdom refugees, Nubert, and various Cyber World residents all find homes here. It serves as the game's hub between chapters — where you buy items, talk to relocated Darkners, and watch Ralsei fuss over his growing kingdom. The town's growth mirrors the party's bonds strengthening.
A small, charming town within a Dark World — initially populated only by Ralsei. As Dark Fountains are sealed, displaced Darkners relocate here. The architecture is quaint and storybook-like. There's a castle, shops, a dojo, and a growing community.
Also known as: Ralsei's Kingdom