I wish to create an entirely new tech tree for all four ages. All four of the tech trees will cover a period of about 4 years so clearly the base game tech tree is kind of... no good. I was wondering if there are any quirks I need to keep in mind, since this'll be the first time I've ever done something like this. I'm running the Complete Edition version of the game and I'm using the editor included with the game. FYI, the scenario involves an invasion of the Hawaiian Islands using the 362x362 Hawaii map as found here: https://forums.civfanatics.com/threads/hawaii-362x362.493457/ I downloaded it on a whim and absolutely fell in love with it! Really offers an opportunity for both land and sea combat. If I think the scenario is any good, I might just consider uploading it here.