- Probably the biggest one is I don't declare war on the AI. Ever. I almost never play militaristically, so even if I know I will want to fight them eventually, I wait until they declare war. On Prince or below, this has always ended up with my steamrolling several of their cities until they only have one left, but in my current King game, I let my main rival develop until he's way ahead of me in every possible way and I'm being kept alive solely by the fact that he's on a different continent and I'm using my navy to kill his embarked units. It's working for now, but I'm thinking that facing the threat earlier in the game might have saved a lot of money and trouble.
- I (almost) never sell Open Borders, although I sometimes trade them for an AI's Open Borders. If it's an ally on the other side of the world and we've signed DoFs and I have no reason to think they might be a threat, I may swap Open Borders with them. In every other situation I can't help but feel like the sheep who invited the wolf in for dinner. I never feel like I need the gold that badly.
- I sign a lot of RAs, but I don't plan them carefully enough and usually end up wasting them. As I've just made the jump from Prince to King, I think I need to work on this one.
- No matter what strategy I'm going for, I always end up choosing the same Social Policies: Tradition opener, then Liberty, then the rest of Tradition, then Piety, then Patronage, then Freedom. Every time. I tried to deviate with my current game by going for Rationalism instead of Piety, and I can't help feeling that it was a dumb move as I am so far behind my rival scientifically anyway. I think I went Commerce once. I have never chosen Order or the Modern-era military-focused one whose name I have actually forgotten.
- And I've never used an Atomic or Nuclear Bomb - until yesterday. It was deeply satisfying. And pretty. Even though I still feel slightly guilty about the virtual three-headed Korean babies that will no doubt be born in that city for generations to come.