There are lots of examples of varying complexity on GitHub: https://github.com/search?q=extension%3Aink&type=code https://github.com/search?q=extension%3Aink&ty

There are lots of examples of varying complexity on GitHub: https://github.com/search?q=extension%3Aink&type=code https://github.com/search?q=extension%3Aink&type=code (A few of those are false positives because someone made a personal scripting language called Ink, but most of them appear to be the interactive fiction from this article)