Tech tree | Tech tree XCOM: Enemy Unknown Guide
Last update: 11 May 2016
In most cases, new research projects are unlocked after getting a new alien artifact (weapons, pieces of UFOs construction, alien bodies or living aliens), but some of them, such as the armor for soldiers, require the invention of the items. The following tech tree has been divided into several groups to facilitate the reading:
General and story-related technology
Project | Required project | Required Components | Results: |
Experimental Warfare |
|
| Foundry Phoenix Cannon Alien Grenades (Foundry) |
Weapon Fragments |
| 5x Weapon Fragments | S.C.O.P.E. S.C.O.P.E. Upgrade (Foundry) |
Alien Materials |
| 5x Weapon Fragments | Nano-Fiber Vest |
UFO Power Source |
| 1x UFO Power Source | building Elerium Generator |
Xeno-Biology |
| 4x Sectoid Corpses | Alien Containment Building |
Arc Thrower | Xeno-Biology | 10x Weapon Fragments | Arc Thrower |
Outsider Shard | Xeno-Biology |
| Skeleton Key |
Elerium |
| 1x UFO Power Source, 10x Elerium | Improved Arc Thrower (Foundry) |
Alien Nav Computer |
| 2x UFO Flight Computers | Satellite Nexus building Stealth Satellites (Foundry) |
Hyperwave Communication | Alien Nav Computer | Hyperwave Beacon, Alloys 30x, 30x Elerium | building Hyperwave Relay |
Ethereal Device |
| Psi-Link | Gollop Chamber building |
Weapons
Project | Required project | Required Components | Results: |
Beam Weapons |
| 10x Weapon Fragments, 5x Alloys | Laser Pistol Laser Rifle Improved Pistol II (Foundry) |
Heavy Lasers | Beam Weapons | Weapon Fragments 5x, 5x Alloys | Heavy Laser Laser Cannon SHIV laser (Foundry) |
Precision Lasers | Beam Weapons | Weapon Fragments 5x, 5x Alloys | Scatter Laser Laser Sniper |
Plasma Pistol |
| Captured Plasma Pistol, 40x Weapon Fragments, 5x Elerium | Plasma Pistol Improved Pistol III (Foundry) |
Light Plasma Rifle |
| Captured Light Plasma Rifle, 40x Weapon Fragments, 10x Alloys, 5x Elerium | Light Plasma Rifle |
Plasma Rifle |
| Captured Plasma Rifle, 40x Weapon Fragments, 10x Alloys, 5x Elerium | Plasma Rifle |
Heavy Plasma |
| Captured Heavy Plasma Weapon, 40x Plasma Weapon Fragments, 10x Alloys, 10x Elerium | Heavy Plasma Plasma SHIV (Foundry) |
Plasma Sniper | Plasma Rifle / Heavy Plasma | 50x Weapon Fragments, 10x Alloys, 10x Elerium | Plasma Sniper |
Alloy Cannon | Plasma Rifle / Heavy Plasma | 40x Weapon Fragments, 25x Alloys, 5x Elerium | Alloy Cannon |
Guided Fusion Launcher |
| Captured UFO Battleship Class Fusion Core, 75x Weapon Fragments, Alloys 20x, 10x Elerium | Blaster Rocket Launcher |
Armor
Project | Required project | Required Components | Results: |
Carapace Armor | Alien Materials | 10x Alloys | Carapace Armor Alloy SHIV |
Skeleton Suit | Carapace Armor | 15x Alloys | Skeleton Suit |
Titan Armor | Carapace Armor | 15x Alloys, 5x Elerium | Titan Armor |
Ghost Armor | Titan Armor, Hyperwave Communication | 15x Alloys, 15x Elerium | Ghost Armor |
Archangel Armor | Titan Armor, New Fighter Craft | 15x Alloys, 15x Elerium | Archangel Armor |
Dog Armor | Interrogation of an Ethereal or a Sectoid Commander | 10x Alloys, 10x Elerium | Psi Armor |
Fighters
Project | Required project | Required Components | Results: |
Experimental Warfare |
| 5x Weapon Fragments | Phoenix Cannon |
Heavy Lasers | Beam Weapons | 5x Weapon Fragments, 5x Alloys | Laser Cannon |
Plasma Cannon | Light Plasma Rifle | 30x Weapon Fragments, 10x Elerium | Plasma Cannon |
New Fighter Craft | Alien Navigation Computer, UFO Power Source | 75x Weapon Fragments, 10x Alloys, 10x Elerium | Fighter Firestorm Hover SHIV |
EMP Cannon | New Fighter Craft, Plasma Cannon | 20x Elerium | EMP Cannon |
Interrogations and autopsies
Alien | Autopsy | Interrogation |
Sectoid | Targeting Uplink (fighters) | credit: Beam Weapon |
Floater | Defense Matrix (fighters) | credit: Armor Research |
Thin Man | Improved Medikit (Foundry) | credit: UFO Technology |
Muton | Ammo Conservation (Foundry) | credit: Plasma Weapon |
Chryssalid | Chitin Plating |
|
Heavy Floater | Advanced Repair (Foundry) | credit: Flight |
Commander Sectoid | Psi Lab | credit: Psionics, required for Psi Armor |
Elite Muton | credit: Plasma Weapon | credit: All Weapon Tech |
Berserker Muton | Combat Stims | credit: Armor Research |
Drone | Drone Capture (Foundry) |
|
Cyberdisc | UFO Tracking (fighters) |
|
Ethereal | Mind Shield | credit: All Tech, required for Psi Armor |
Sectopod | Advanced Construction (Foundry) |
|
Foundry
Project | Required Components | Results: |
Heavy Weapons Platform | 5x Engineers | S.H.I.V. |
Alien Grenades | Captured Alien Grenade, 20x Engineers, 20x Weapon Fragments, 25x Alloys, 10x Elerium | Alien Grenades |
Improved Medikit | 15x Engineers, 20x Weapon Fragments, 4x Thin Man corpses | Medikit heals 50% more life points |
Improved Arc Thrower | 10x Engineers, 20x Weapon Fragments, Alloys 20x, 20x Elerium, 4x Drone wrecks | Arc Thrower has a better chance to stun foreign |
Advanced Repair | 20x Engineers, 30x Alloys, 10x Elerium, 4x Heavy Floater corpses | Reduces repair time fighters and S.H.I.V. |
S.H.I.V. Laser | 10x Engineers, 15x Weapon Fragments, 30x Alloys | S.H.I.V. is armed with a laser gun |
Plasma S.H.I.V. | 20x Engineers, 30x Weapon Fragments, 45x Alloys, 30x Elerium | S.H.I.V. is armed with a plasma gun |
S.H.I.V. Repair | 10x Engineers, 15x Alloys, 15x Elerium | Arc Thrower can repair the S.H.I.V. rover |
S.H.I.V. Suppression | 15x Engineers | S.H.I.V. can cause suppression fire |
Drone Capture | 10x Engineers, 20x Weapon Fragments, 4x Drone wrecks | Arc Thrower can take control of the Drone |
Ammo Conservation | 15x Engineers, 20x Weapon Fragments, Alloys 90x, 6x Muton corpses | Each weapon has more ammo |
Advanced Construction | 30x Engineers, 20x Weapon Fragments, Alloys 50x, 30x Elerium, 2x Sectopod corpses | Faster installation and construction vehicles |
Advanced Flight | 25x Engineers, 50x Alloys, 50x Elerium | Longer duration of floating in the air for S.H.I.V Hover and Archangel Armor |
Improved Pistol I | 5x Engineers, 5x Weapon Fragments | The increased critical strike chance for all guns |
Improved Pistol II | 10x Engineers, 25x Weapon Fragments, 20x Alloys | Increased accuracy of all guns |
Improved Pistol III | 20x Engineers, 50x Weapon Fragments, 10x Alloys, 10x Elerium | Increased maximum damage of all guns |
Stealth Satellites | 20x Engineers Alloys 20x, 20x Elerium, 3x UFO Flight Computers | Reduced chance of satellite detection by UFO |
S.C.O.P.E. Upgrade | 10x Engineers, 15x Weapon Fragments | Increased critical strike chance for SCOPE |