Introduction to the Machines of Horizon
In the post-apocalyptic world of Horizon Zero Dawn and Horizon Forbidden West, humanity no longer sits at the top of the food chain. Instead, colossal animal-like robots roam the earth, serving distinct roles in restoring and maintaining planet Earth's biosphere. Understanding these machines—their classes, origins, and combat weaknesses—is essential for any hunter looking to survive Aloy's journey.
The Lore Behind the Machines: GAIA, HEPHAESTUS, and the Derangement
To understand why these machines exist, one must look back to Project Zero Dawn. Built by the terraforming superintelligence GAIA, these automated constructs were originally designed to purify the air, restore oceans, and rebuild soil ecosystems. Each machine class performed a vital ecological task under the sub-function HEPHAESTUS.
However, after a mysterious signal severed GAIA's sub-functions, HEPHAESTUS gained free will and viewed tribal humans hunting machines as a direct threat. This triggered "The Derangement," causing newly minted machines to become increasingly aggressive and armed with lethal combat weaponry.
Machine Classes Explained
1. Reconnaissance Class
Reconnaissance machines act as the eyes and ears of HEPHAESTUS. They scout environments, alert nearby herds to human threats, and use sonic waves or flash blinks to disorient attackers.
- Watcher: Small, raptor-like sentries that flash blinding light and emit loud alerts.
- Burrower: Amphibious scouts introduced in Horizon Forbidden West that travel underground and sound high-pitched alarms.
- Longleg: Ostrich-like reconnaissance units capable of emitting concussive sonic blasts and boosting surrounding machines.
2. Acquisition Class
Acquisition machines gather resources, purify soil, process detritus, and reclaim metal from fallen units. While non-hostile by default in pre-derangement times, modern variants carry devastating elemental attacks.
- Grazer & Scrapper: Early-game harvesters that extract biofuel and scavenge scrap metal.
- Snapmaw: Crocodile-like aquatic processors that operate in rivers and wetlands, firing dangerous Frost elemental attacks.
- Rockbreaker: Terrifying mole-like giants that burrow beneath the earth, hurling boulders and tearing through defenses.
- Tremortusk: Massive mammoth-like juggernauts outfitted with heavy artillery turrets and devastating shock cannons.
3. Transport Class
Transport machines move large quantities of raw materials and processed resources between cauldron manufacturing facilities and terraforming sites.
- Shell-Walker: Crab-like transports featuring energetic shields and heavy cargo containers.
- Behemoth: Massive anti-gravity transports that use magnetic forces to haul heavy metals and crush opponents with telekinetic rock flings.
- Rollerback: Armored pangolin-like machines that roll at high speeds and shed combustible armor plates.
4. Combat Class
Designed specifically by HEPHAESTUS to hunt humans and protect other machine herds, Combat machines are deadly apex predators equipped with heavy weaponry and elemental cannons.
- Sawtooth & Ravager: Feline predators designed for aggressive melee combat and long-range plasma or heavy weapon attacks.
- Thunderjaw: The iconic apex predator equipped with radar arrays, disc launchers, laser cannons, and tail sweeps.
- Stormbird: Colossal airborne predators that rain down lightning attacks and gusting wind blasts.
- Slaughterspine: A giant Spinosaurus-type apex predator powered by volatile plasma energy in Horizon Forbidden West.
5. Communication & Utility Class
Unlike hostile units, these massive machines provide structural support and broadcast essential network commands across the continent.
- Tallneck: Gentle, giraffe-like giants that serve as mobile communications towers. Climbing and overriding a Tallneck reveals sections of the regional map.
Ancient Chariot Line and Zenith Spectres
Beyond GAIA's terraforming ecosystem, Aloy encounters ancient military warmachines and advanced futuristic technology.
Faro Chariot Line
Created by Faro Automated Solutions, these swarming war machines destroyed life on Earth during the 21st century:
- Corruptor (FAS-ACA3 Scarab): Agile battle units capable of hacking other automated systems.
- Deathbringer (FAS-FSP5 Khopesh): Heavy walking fortresses laden with missile pods and explosive cannons.
- Metal Devil (FAS-BOR7 Horus): Colossal titan-class war machines capable of replicating other units exponentially.
Far Zenith Technology
Encountered in Horizon Forbidden West, the futuristic Far Zenith faction utilizes sleek bio-mechanical machines constructed from liquid nano-metals, including the agile Spectre and the towering Spectre Prime.
Essential Tips for Defeating and Overriding Machines
- Scan with the Focus: Always highlight machine components and weak points before engaging.
- Target Weapon Hardpoints: Use tear damage arrows to shoot off weapon pods like Thunderjaw disc launchers or Ravager cannons to use them against their owners.
- Exploit Elemental Weaknesses: Apply elemental states (Acid, Fire, Frost, Plasma, Shock) to trigger chain reactions in resource canisters.
- Unlock Cauldron Overrides: Delve into ancient subterranean Cauldrons to gain override codes, allowing you to turn machines into temporary allies or permanent mounts.
Frequently Asked Questions
How many total machine types exist across the Horizon series?
Across Horizon Zero Dawn, Horizon Forbidden West, and Horizon Call of the Mountain, there are over 40 distinct machine base models, along with dozens of elemental and apex variants.
What is the strongest machine in Horizon Forbidden West?
The Apex Slaughterspine and Apex Thunderjaw are generally considered the most dangerous non-boss machines in Horizon Forbidden West due to their massive health pools, high elemental resistance, and relentless attack patterns.
Can you override every machine permanently?
While you can override most machines after completing their corresponding Cauldrons, some overrides are temporary unless upgraded via Aloy's skill tree, and certain boss or ancient machines cannot be overridden at all.
Final Thoughts
The machines of Horizon Zero Dawn and Horizon Forbidden West are among the most visually striking and mechanically complex enemies in modern video games. Mastering their behavior, understanding their lore origins, and targeting their vulnerabilities makes combat in the world of Horizon a uniquely rewarding experience.
