Alien Structures
Colony
The first objective of the invasion of any new world is the deployment of a Colony. From here, the invasion can be organized and new facilities can be constructed.
Elerium Generator
The basis of all alien technology is the element Elerium-115. This facility can generate Elerium as well as process Elerium harvested from crash sites. Produces minimal power.
= Colony
Elerium Reactor
Alien facilities require power and the Elerium Reactor can produce lots of it. Unfortunately, it does place a drain on Elerium reserves so be sure to generate a steady supply of the element.
= Colony, Elerium Generator
Cloning Chamber
The Cloning Chamber is where new alien soldiers are created.
= Colony, Elerium Generator
Sensor Array
The Sensor Array provides you with a tactical view of the terrain and helps you to monitor any native presence. Special sensors can reveal unexplored areas of terrain.
= Colony, Elerium Generator
UFO Construction Facility
This is where all non-organic units are constructed.
= Colony, Cloning Chamber
Technology Node
The Technology Node is where all advanced weapons and units are constructed. Without this facility, many units will be unavailable.
= Colony, Sensor Array, UFO Construction Facility
Advanced Cloning Chamber
The Advanced Cloning Chamber is the same as a standard Cloning Chamber but also stores the genetic patterns of several additional species as well as providing an advanced healing process called 'instant tissue regeneration' for all cloned infantry. The more Advanced Cloning Chambers you have, the more effective the regeneration process will be. Owning additional Advanced Cloning Chambers also decreases the cost of creating new clones. You may only construct up to three Advanced Cloning Chambers.
= Colony, Cloning Chamber, Technology Node
Cloning Vats
Cloning Vats double the effectiveness of your cloning operations. For every unit that is cloned, you get another one cloned for free. You may only construct one Cloning Vats.
= Colony, Advanced Cloning Chamber, Technology Node

Alien Armory
Sonic Turret
Sonic Turret
= Colony, Elerium Generator
Sonic Cannon
Sonic Cannon
= Colony, UFO Construction Facility
Tractor Beam
Tractor Beam
= Colony, UFO Construction Facility
Teleporter
Teleporter
= Colony, Technology Node
Molecular Control Beacon - Sectoid
Molecular Control Beacon
= Colony, Technology Node
Ion Cannon (uplink) - Muton
Ion Cannon Uplink
= Colony, Technology Node, Sensor Array