If you're into strategy, history, domination, diplomacy, and 4x's in general, then there's a lot to like about Europa Universalis IV. It starts in 1444 and goes all the way to 1821, following the proto-country you pick through an almost 400 year history. There are over 100 Nations to choose from, among other formable ones once the proper conditions are met; such as Prussia, Egypt, and the Netherlands to name but a few.
The game is in real time, not turn-based, but you are able to pause the game to issue orders and deal with your affairs, or slow the game speed down to settings 1 or 2 (of 5, 5 basically being as fast as your computer can handle). You build your armies and determine its makeup (out of Soliders, Cavalry, and Artillery) and this affects how battles will go. A lot of Nations have special bonuses to certain things (like Poland gets a bonus to its Cavalry), which also affects the outcomes of battles; which are based on dice rolls (sort of like Risk) which are greatly affected by the general you have leading the army.
It is a complicated game with a great deal to learn (it makes Civilization seem arcadey), but if strategy, simulation, and history are your thing, it's easily worth the time investment and should provide countless hours of fun and content (it's on Steam Workshop and there are a ton of mods for it, not to mention Paradox often releases expansions and extra DLC artwork for it as well). The game can also feel very fresh based on what part of the world you're playing in and as what Nation, as strategies will vary wildly depending on that.
It's very easy to recommend this game to fans of the genre.