Let me introduce you to eRepublik, my longest played game ever. 
What is eRepublik?
eRepublik is a massively multiplayer online (MMO), social networking and strategy web browser game. The game allows players to participate as individual citizens in an online mirror of the real world. Citizens can own businesses, form political parties, vote in elections, write newspaper articles, and go to was as citizens of virtual versions of real life countries.

Personal Experience:
I have been a member of this game since June 22, 2009. That's long to me. Most of my games I stay for a few months. When I first started this game I knew that I will be addicted to this game. I am currently ranked 64 from the country I am residing. That's a very good rank. I have also been a Congressman two times. This, I performed well in my opinion. I was primary sponsor of the Tank Resolution, decreasing the taxes from local manufacturers and increasing the import tax.
Join the game and experience what I have experienced. I advise you to move to Palawan, Philippines in the game.