If you want a game that marries retro RPG flavor with modern AI smarts, Saga is a good pick. This text-based AI-powered role-playing game combines the spirit of old-school RPGs with new elements, letting you chat with characters and navigate a story through a text interface. It has adjustable settings, conversational dialogue with AI-powered characters and AI-generated illustrations for a richer experience.
Another option is AI Adventure, an open-source project that uses sophisticated AI to generate new storytelling possibilities. The game offers endless customization options, the ability to generate story, images and audio on the fly, and a powerful adventure editor for creating and sharing new adventures. You can explore community-created adventures and even help build the project on GitHub.
Last, Convai is an embodied AI character creation system that handles real-time voice interactions and scene understanding in virtual worlds and games. It's geared for intelligent characters that can speak, perceive and act in game worlds, so it's a good tool for game developers and other uses.