I recognized some of the statements that other leaders would say during negotiations, a few messages that would pop up on the screen, and so on. (This was one of the nerdier thing I'd done up to that point, but would pale in comparison to the moment in college when I realized that I could pipe arbitrary files to /dev/dsp in order to find out how they sounded.) Most were gibberish, but I was surprised to see that several of the files for Civilization were viewable in plain text. One day, when I was bored and nerdy, I started opening random files in my computer to see what they looked like. The original Civilization was one of my favorite games.
Actually, Civilization was also the first franchise I modded. I think the last serious modding I did was for Civilization 2, back in the mid-to-late 90s. As I was working on Antumbra, I realized that it's been a long time since I've built anything for another game. It felt surprisingly great to get back into modding again.