Without a shadow of a doubt the most daunting and comlpex game i have ever played in my life.
The general gameplay is you take control of of one out of about 200 nations, ranging from tiny Haiti to huge Russia, and you take control of every aspect of that nation for about 100 years, attempting to make them the most powerful nation using the economy, politics, culture and military.
I have never played a game where i started i literally had no idea what to do. The game is SO in depth, you control EVERY aspect of a nation, ranging from deciding whether you want a liberal goverment with a laissez faire economy, whether you want to import more canned food goods and less wool, whether you want to research artillery tactics or modern railways the list goes on and on and on. Its not just a 'slightly more comlpicated Civ V', its insane!.
The interface is not user friendly and i challenge anyone to jump into this and understand it.
The biggest problem is (stupidly) there is no tutorial, if ever a game needed a tutorial this is it!.
Despite all this i still thik its ok! It took hours of playing and watching youtube vids about it but once you get a grasp on the game its quite fun as there is so much to keep you occupied and every decision makes a difference.
Only buy if your willing to give hours of your life just to get to grips with it, was it worth the hours i put in? Not really, its an ok if not amazing game.