I've long had the fantasy of an economics simulator given dwarf fortress levels of dedication and attention to detail. This might not be it, but it does warm my soul a bit.
The bulk of it is obvious Capitalism vs Communism political jokes though, so I wouldn't consider it a very serious economic simulator. But its better than most IMO.
An interesting thing you can do with a simulator is pause, rewind, make arbitrary experiments, run counterfactuals, etc -- all of which are prohibited in Eve since it needs to respect the users who are there to have fun, not be test subjects.