Furburt said:
Well, you could try X3 Reunion. It's a totally different type of game, a space sim, but it's got the same sense of "Go anywhere, do anything" that made Oblivion so fun.
Also, I hear Mount and Blade is great, although I haven't played it.
I agree with Furburt. The graphics are amazing for a state, it's all open and if you get bored of that, you can create an entire universe yourself and populate it with whatever you want. I'm not so good at that yet, I've just made a couple of sectors, space stations and a few ships.
One thing you should do is download the cheat scripts to save you making your own, then lower the mass of your ships. Flying the larger ships like the Akima is really hard because some of the other stupid sunday driver pilots don't think it would be a good idea to fly around the huge ship hurtling toward them.