Whodunit started as a pen-and-paper game for family game night. It evolved into a playable web app as the surprise reveal in a GopherCon '25 lightning talk.

The mysteries are all written by LLMs. Some are better than others, but most work nicely.

The web app is written in go with templ HTML templates, HTMX for on-page interactivity, and a turn-based game engine written as a Temporal workflow.

Check out the mystery gen write up for more info: https://blog.apartment304.com/whodunit-llm-murder-mysteries