If you have not checked it out already, be sure to check out Dual Universe, an upcoming Kick Starter that is essentially EvE Online meets Space Engineers. It is an extremely ambitious project if the staff at Novaquark can pull it off. Be sure to check out their Kick Starter page.
I have pledged $65 to this. If you have the money, I highly suggest looking into this more and consider pledging. If you are reading this too late, be sure to follow this as it could be ground breaking if they succeed. They already have had some nice things to show off, so they seem to be pretty far in the development and just need the last mile.
Let me know what you think below!