AI Dungeon 2 is an Artificial Intelligence Driven, Text-Based Adventure Game, Here's How to Play – TechEBlog

Developed by Nick Walton, AI Dungeon 2 is based on an open-source text-generating algorithm created by OpenAI. The AI was trained by feeding it choose-your-own-adventure stories from the Choose Your Story website. Think of AI Dungeon 2 as a Zork-inspired text adventure game (TAG), but rather than limiting players to only going in specific directions, it responds to pretty much anything the player types. AI Dungeon 2 is a first of its kind. Players start by choosing the type of adventure they want to play, with genres including: mystery, apocalyptic, zombies, and fantasy.