This game was in fact the first (or at least one of the first) game(s) I remember playing; I sat on top of a kneeling chair at my grandparents house (which I never knew how to sit on properly :D) and played the tutorial missions, specifically the last two again and again, trying to figure out new ways to break the ai and have fun outside the intended way to play it, e.g. by building gates in front of their gates to basically stunlock the ai and prevent them from moving around the map. I'd love to get the original version of the game on GoG to relive those memories. (And the Definitive Edition as well to have all the updates and fixes they made. :D)