Browser D&D 5e dungeon crawl with an AI Dungeon Master that cites every ruling
The Goblin Warren is a browser D&D 5e dungeon crawl with an AI Dungeon Master that never invents a rule — every ruling is looked up in a Sanity knowledge base and cited, with a viewable ruling trace so you can check the DM's work. Pixel-art dungeon crawling meets grounded AI narration.
The author dedicated a section of the dev log, "Building it with Claude Code", to the process: "The Sanity layer and the DM's Knowledge Base logic were built by Claude Code agents." Created 2026-10-03, 101 commits on master — a weekend-scale build with a serious testing setup (Vitest + Playwright) for a game.