A recent indie game bundle sale (where you contribute whatever amount of economic value you see fit) put me onto quite an interesting indie project called Scrumble Ship. The idea behind the game is that it simulates the most realistic space combat possible. It has a kickstarter profile here, and a facebook profile here.
The concept is intriguing! For most purposes it seems like Minecraft set in space, but perhaps it could make use of some Star Trek-esque mechanics?