you want to build diagonally?
#vertical building
wet sparrow
shadow scarab
vertical building dosent work well on 2D games
wet sparrow
just rotate camera with q and e
if you want another layer of building space deck utility is probably the best you’ll ever get
spiral kettle
just in case you mean diagonally
right click mirror mode for more mirrors for the ones you want.
as for building diagonally, turn your camera 45 degrees a well
another thing is turning the flight direction of the ship afterwards