Supreme ruler 2020, how long have I been searching for a game like you...
The answer is about 3 or four years. So what is this super-duper game then?
You can take any country in the world (even Andorra, never even knew that existed, its between France and Spain) and command it economically and politcally and militarily. But the best thing is that for once IT IS SET IN THE PRESENT, which makes it more intriguing. No longer are there obvious antagonist states such as Japan Germany or the USSR. You have to make them powerful. Obviously there is North Korea, absoloutely a must play. and China and Russia who are fun to play as. The real excitment lies in playing as Britain or France and attacking europe.
Graphically it is incredibly intense, maybe not in the same way as battlefield (the water is terrible), but displaying litterally TENS OF THOUSANDS of units can destroy your computer.
You can also play with real life military units. They are much better than some games (the sort that have light medium and heavy tanks) in that you can take american aircraft carriers and Russian tanks and then throw them into battle so it is one enormous, accurate, set of toy soldiers.
What could be better?