FAQ
From Space Engineers Wiki
Taken from Marek Rosa's Development Blog:
Q: Are the ships limited to any shape or size? i.e. can I shove a thruster on a city and pilot it through space?Are the ships limited to any shape or size? i.e. can I shove a thruster on a city and pilot it through space?[1]
A: There are no size limits at this moment and we are lucky, it can stay there.
Q: Are there plans for weaponry?
A: Weapons = yes, but the details will come later[2]