I'm not sure why there's all that hate for DNF. It's slightly over the edge and a bit too cheesy, but not in the excess people proclaim it to be. It is definitely much more than in today's games, but nothing too hurtful as long as you're prepared for it.

I find DNF enjoyable.

There are other more fun combat space flight sims, but this is by far the best and most detailed trading one.

High character customizability, entertaining quests, good tempo, well balanced difficulty, and free to play. It even makes me want to spend cash on offered stuff.

Oh, and it has comic book superheroes.

Hooray :)