I've been playing bunch of paradox interactive games.
CK2 - This is the perfect way to make a dynasty simulter. However the menus have a tendency to be overly complicated. For instance, if you want to find a woman to marry for her claims, you have to click on her portrait in the marriage menu, which drops the menu to go to the person page. And you have to keep going back and forth
HOI3 - Not my thing, I don't really like war based grand strategy. If i want a war based game I would like to be a bit more...in there.
EUIV - ....Kinda simple to be honest, theres not much to the game asides from fabricating claims and painting the map your color.
Victoria - The most indepth of the bunch, this is basically the nightmare of EUIV, I am really interested in this game, but fiddling with the pops and getting my budget to a normal level is a bit of a hassle