I started a new obsession with Total war 3 Kingdoms. There is several mods that basically adds new campaigns with new mechanics so I've just been doing that. I recently completed a campaign that was labelled "very hard". You start out as a vassal state with really strong neighbors who will go to war with you at the drop of a hat. I restarted that campaign like 6 times just to be able to survive the starting situation.

I've tried other Total War games but this one i feel got everything right, from the interface to diplomacy. I tried the forst Warhammer one and Rome and didn't like them. So i got a refund before that ran out.