Question: I need a writing tool that assists with world-building and setting creation for my fantasy series.

If you're looking for a writing tool to help you flesh out world-building and setting for your fantasy novel, Novelcrafter is a rich option. It includes a personal Wiki (Codex) to house and track story information, AI tools, and a variety of writing modes. The tool is geared for both planners and pantsers, with tools for outlining, revision history and customizable tags and labels.

Another option is StoryNest.ai, which offers AI tools for world-building and a variety of tools to craft compelling stories. It includes character creation, chat and multiple formats like novels and interactive fiction. The tool also offers AI editing and proofreading tools, so it's a good option for writers who want to improve their storytelling and setting.

If you want more advanced AI help, NovelAI offers tools like image generation for character visualization, a text adventure module and a customizable editor. Its AI modules can help you write in different styles and house your world-building details in a lorebook, so it's a good option for fantasy writers.

Last, Subtxt is geared for building narrative structure and consistency with AI tools like Narrative Agents and Subtxt Muse. The tool can help you find gaps in your story and generate content to fill them, so it's a good option for ensuring your world is well-rounded and consistent.