Fairly simple mechanics and pretty much non-existant graphics, but pretty fun and not very time-consuming (you can get by with just a few minutes every days or two and still keep up just fine). Unlike most games of this sort instead of running a planet you run a House (think Dune, whole game seems very Dune-inspired) that can run business in one or more areas (politics, trade, mining, psionics, military etc. etc.) across a couple different planets.
There's also a good number of newbie-protection mechanisms that make it hard/undesirable for big players to squish the new fish without having too many artificial restrictions. But they do assign people to Galaxies (servers) randomly to keep a bunch of people who know each other all deciding the play on the same galaxy and then gang up on everyone else.
Right now I'm using my illegal narcotics smuggling profits to build up a small covert ops network that I hope to have some fun with.
I'd recommend giving it a shot.