[LintMan]

As a feature to make the game more difficult, the AI's are set to turn against a player (or another AI) when that player's score excedes everyone else's (> 150% of their score), and the player's score is above a certain amount (500K).

The behavior I've seen with this is I can have a great relationship with some race, despite having double their score, but then my score goes over 500K, and within a few turns the race turns hostile. Other races I then meet thereafter start out OK, but also turn hostile within a few turns.

You can turn this feature off with the "AI Uses Evil Empire" setting in Settings.txt, or use change change the numbers to adjust it