AI Dungeon

AI Dungeon, by Latitude, is the pioneer of AI interactive fiction: a text adventure with no fixed story, where you type any action and the AI generates the continuation in real time across fantasy, sci-fi, horror, and any genre you invent. It went viral in 2019 on GPT-2 and now runs on advanced models including DeepSeek V3 and Latitude's custom models, with multiplayer co-storytelling, world-building tools for custom lore and characters, text-to-image generation, and a new memory-graph system to keep long stories coherent. In 2026 Latitude also launched Voyage, a platform for creating full AI-powered RPGs with persistent game state.

The honest picture: long stories can still drift — characters and plot threads fade as context fills, though the memory system is improving this. Free play caps daily generations and advanced models, with paid plans from ~$9.99/month. Content moderation has a history of false positives in private stories, and image generation is a bonus rather than a strength. It's a creative playground, not a polished game — the fun is the chaos, and the chaos includes occasional nonsense.

Play free in the browser at aidungeon.com or install the iOS/Android app; create an account for cloud saves.