How often does ai war? Ive seen 2100 once and no war...
Very rarely. I haven't ever had the AI declare war on me in about 180 hours of playing the game. The AI likes to declare war on other AI empires though, in my experience, but always on weaker empires.
The AI seems to be very conservative about its survival in a war and won't declare war unless it's reasonably sure it will win. That seems to be the case even for genocidal empires, who will hate your guts all day but won't attack you if they think it's too dangerous. Some AI personalities, like Honorbound Warriors, supposedly are more brave when declaring war, but I'm not sure how much weight it actually has.
So, in general, it seems that if you want to see war, you should play an aggressive empire and declare war
yourself, or feign weakness by not building up your fleet until someone does declare war. That, of course, is very risky if you can't build up your fleet in time.
I've recently tried playing with the AI set to Aggressive, but haven't noticed any change. Turning up the difficulty would probably help too since it makes the AI economies stronger to the point that they probably compete with you.
Also, does the game not know how 'stars' and astronomical time works? It regularly flavor-texts about five thousand or centuries when it should be recording something more along the lines of at least high tens of thousands if not hundreds of thousands or millions. A space station abandoned 5k years ago? Where is that civ? A mummy a few centuries old? Again.
Its at the point where its absurd for geological timelines, let alone astronomical. An 'Astronomically long time' is not used to refer to impractical or permanent states because it was easy to imagine or wait out. Silly human writters and their silly 30k year old socities . . .
My favorite example of this is the anomaly where your ships are grazed by railgun rounds fired from an adjacent galaxy. The scales are hilariously out of whack. For example, when the Andromeda and Milky Way galaxies collide in the distant future, it's actually vanishingly unlikely that any two
stars will collide, so what are the odds that a tiny railgun round will hit a tiny spaceship over such distances?
But, yeah, it's the kind of campy sci-fi that the game emulates, so that's what we get.