[Captain Kwok]

There is no multiplayer mode. I can see it being added in the future or some sort of skirmish mode - of course I'm just speculating here.

Missions are controlled by text files that are fully moddable.

It's all text files, but SJ has created some programs to help with the more difficult files that detail with co-ordinates and slots etc.

You can new races, ships, systems, anything.

It's more moddable than SE:IV IMO.