Without access to the terraforming system, HADES was forced to find an alternative method of bringing about a second global extinction. Its solution was to create an army in order to access the Spire, one of MINERVA's broadcasting towers. It revived Corruptors with the help of the Eclipse, who used the ancient machines to enslave GAIA's machines to their ranks.
The corrupted machines were kept secret until the War Party massacre, when the Eclipse used a stampede of corrupted machines to wipe out over half of the Nora Braves.
The most distinctive feature of a Corrupted machine is the invading circuitry present all over the machine's body, which emits both a red glow and a dark smoke-like effect of corrosion. They appear with red outlines when scanned with a Focus.
In terms of behavior, they become hyper-aggressive towards any humans detected, as well as non-corrupted machines, even by post-Derangement standards. Corrupted machines ooze an acidic substance as they walk; if Aloy walks over this substance, it will damage her for a short period of time.
All Corrupted machines are weak to fire damage.
- Corrupted Machines will not disappear entirely after clearing all Corrupted Zones. A small portion will continue to exist in Devil's Grief and the sorrounding lake.