I'm always drawn to games during which the players end up creating a shared artifact, and this is a really nice one. The options for how the map can change are very evocative.
One of my favourites is Emily Short's San Tilapian Studies, which isn't available anywhere that I know of, although she writes about it in enough detail here that it could probably be recreated: https://emshort.blog/2012/08/30/san-tilapian-studies-a-casual-narrative-entertai.... I also really like The Quiet Year, which your game actually reminded me of a bit! https://buriedwithoutceremony.com/the-quiet-year.