Game testing is always fun for me seeing how people process all of the little details of the game. In a 2D platformer I worked on in college, it was eye opening to discover how many people had difficulty jumping over a box at the start because of how I implemented jumping (no air-control; WASD controls).
Now here with Defense of Nations I've discovered a fairly major oversight that should have been pretty obvious when I made it: People having been missing half the game thanks to my wording of the "Exploration" button😅
So that's been improved, along with some changes to bring the menu border colors in-line with the rest of the UI and the mouse navigation of the Exploration Menu should be less finicky as the "zones" for determining which element the mouse is on have been cleaned up.
As much as I like non-square UI elements, they sure are a pain to make work right with your average UI system.