If you want a tool to craft detailed quests for your tabletop RPG game, LitRPG Adventures is a great choice. The tool uses AI tools like OpenAI's GPT-3.5 and DALLE3 to generate all sorts of game material, including character backstories, random dungeons and detailed quests. With a database of more than 100,000 entries and several tiers of membership, it's geared to handle a lot of different campaign settings, from traditional fantasy to futuristic sci-fi.
Another tool worth checking out is Spawn, which is geared specifically for Dungeons & Dragons (D&D) enthusiasts. Spawn can whip up characters, campaigns and enemies in a flash, saving you time and effort on prep. It can generate fully fleshed-out characters with all their attributes, and it's good for generating detailed quests and storylines for your D&D games.
If you want a more story-centric approach, Subtxt offers a variety of tools to help you build and refine your story. Although geared primarily for screenwriters, novelists and playwrights, its AI-powered narrative engine can be used to generate and analyze story beats, so it can be used for crafting compelling quests and storylines.
Last, StoryNest.ai offers a powerful tool for crafting compelling stories and interactive narratives. It includes character creation and world-building tools to help you build rich settings and compelling quests for your RPG. It's geared for writers who want to try out different formats, including interactive fiction and scripts.