NationStates!

Multiplayer strategy game that allows users to rule a country, be an entrepreneur or gather your fellow citizens to start a resistance war. eRepublik the online strategy game.

Cyber Nation is a free online nation simulation game. Interact with other players while you build and defend your empire.

Politics & War is a free to play browser based persistent mmo game where you create your own nation and rule it. Forced to make gruelling political decisions you are truly in charge in Politics & War. Play together with friends and strangers, pit your armies against each other and wage war, or work together cooperatively for mutual prosperity. In Politics & War you call the shots.