Camelot is a customizable engine for building simple 3D adventure games, designed for use in interactive narrative research. The engine is controlled by basic text commands sent over standard input, allowing a Camelot game to be controlled by an external program, or experience manager, that can be written in almost any programming language. You can find the latest release and API documentation using the above link.
The project’s design is a collaborative effort by all of us at the Narrative Intelligence Lab. It was built in Unity by Alex Shirvani and Edward Garcia. I wrote the in-house scripting language we use to quickly build Camelot experience managers for testing, demos, and experiments.