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The original was posted on /r/eu4 by /u/TheHieroSapien on 2025-08-03 03:56:04+00:00.

Now that the game has a very short half life, I am curious as to what mechanics the community has not mastered.

With a decade of play, I spent much of my time learning battle mechanics, getting the hang of how discipline, tactics, morale, tech group, etc all twist together to yield a win. I spent hundreds of hours of YouTube time learning government and tag switching.

But the one thing I never put any effort into, and is still a bit of a mystery to me is War Exhaustion - some games it never seems to occur, other games it’s a constant flag in my notifications. I’m sure it has some effect, and rules for accruing, but pfft whatever, dip it away or ignore it has been my response.

So my question is this, What mechanic remains elusive to you?