I have been playing this game called The Lacuna Expanse for a while now (short description: think SimCity meets Master of Orion). I feel the community here would enjoy it.
You start off by customizing your species and home world. You then develop the home world. There is full circle economy: produce resources, manage/reuse waste, minimize pollution, keep your citizens happy, and trade freely with other players on the open market.
It is slow-paced game - you can play it just few minutes a day, or you can spend more time.
This game is for the serious strategy gamer, but anyone can pick it up.
Over 60 types of resources.
Over 100 different buildings to customize your planets.
You can never lose your home planet.
Integrated chat system.
Play anywhere with a browser or your iPhone.
Create your own species.
Unique espionage-based combat system.
Full trade economy (resources, currency, ships, and more).
Over 1 million worlds to explore.
Explore more than 100,000 star systems.
Always fresh; new content is added to the game every week.
Play as an isolationist if you don't want to engage in battle.
Non-linear game play. Choose your direction.