Master of Orion removed colony structures

A

• Anaerobic colonies

C

• Centralized customs dispatch

D

• Dimensional portal

F

• Fighter garrison
• Food replicators

G

• Ground batteries
• Ground missile base

H

• High orbit sonar

I

• Interstellar stock exchange

M

• Matter converter

O

• Outpost

R

• Radiotelescopic observatory
• Robotic factory

S

• Solar kiln
• Special funding tribunal
• Staff college

T

• Toxic condenser

U

• Underground storage

W

• Warp field interdictor