E-Sim is a free-to-play massively multiplayer online game, web browser game which is accessible via the Internet. The game is set in a mirror world where players, referred to as citizens, join in local and national politics where they can help formulate national economic and social policies as well as initiating wars with their neighbours and/or tread the path of a private citizen working, fighting and voting for their state. Citizens can become a soldier, company owner, part of country community, a newspaper redactor or president of the entire country.