I need help, no matter what, I’ll even pay. I need to understand how I can modify or even create a technology or an upgrade, either by cloning an existing one and modifying it, or creating it from scratch.
For example, a damage bonus upgrade for cavalry:
+10 damage for current and future units.
I tried to do this, but the state tree is a major obstacle; I couldn’t manage it. The most I achieved was cloning the bonus from another civilization, but that’s not what I want.