Diplomacy in Games (not necessarily just the game, Diplomacy)

Master of Orion did this. If you break your word or kill millions of their people, the AI will remember. It’s so realistic that it’s frustrating sometimes. Don’t be mad at me because I spied on you in the past. It wasn’t me. I was framed! And how can you hold it against me that I fought back after you attacked me?

What I love about Emperor of the Fading Suns is that you’re supposed to cooperate on some level to at least keep the Symbiots from breaking out and overrunning the galaxy.