If you like your strategy games fiddly, granular and detailed, then good news. The most fiddly, granular, and detailed strategy game to ever come along is finally getting a fourth entry.
Europa Universalis prides itself on making games like Civilization V look like Farmville. Developer Paradox Interactive specializes in grand strategy games: Enormously detailed and meticulously researched games that let you push dials, breed royals like they're Pokemon, and generally play with every single little detail to form an intricate strategy. This broke through with this year's Crusader Kings II and Paradox is seeing what it can bring from that game to their most storied franchise.
That doesn't mean dumbing things down however. For example, the game features 4000 historical rulers and a Monarch Power system to reflect what they think of each other. You'll also be dealing with real historical events and problems that faced the nation you're choosing as your diplomatic proxy.
You'll be able to start invading countries and generally trolling medieval Europe in late 2013.