I think a potential source on tech trees could also be the Civilization IV mod Caveman 2 Cosmos, which has a very wide selection of different techs, especially in the ''prehistoric'' and ''ancient'' categories. Here's a link to the tech trees in question in case anyone is interested: https://forums.civfanatics.com/threads/tech-tree-statistics-and-ingame-tech-tree.625036/
J4n11
1
Posts
A member registered Aug 04, 2019