"Not complex, but random" is my best answer to that. By and large, the flow of the game is probably merely handled by GM adjudication--similar to how things are outlined in the OSR anti-canon codex the Principia Apochrypha. The bulk of the game is randomizers for both players and GMs to create characters, neighbors, villages, seasonal events, etc. The rules themselves only come up sometimes and they're usually resolved with a die roll or two.

I don't have any active plans at the moment. I'd have to learn more about it, honestly! I'm glad you got a kick out of the game though!