Organ decay

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Organ decay is a rare, painful, and untreatable disease that causes increasingly reduced function in a particular organ, until destroying it completely. It is unknown what pathogen causes the illness.


Organ Decay can affect the heart, lungs, and kidneys; multiple organs can be afflicted simultaneously. Organ decay causes pain and reduced part efficiency in the afflicted organ with the associated knock-on effects. When the disease progress reaches 100% the affected organ will be destroyed- which is immediately fatal if the heart is destroyed.

Organ Decay cannot be treated with bed rest or medicine, and is not prevented by penoxycyline Instead, the afflicted organ must be replaced entirely, either with a natural organ or a bionic replacement. Healer Mech Serum will heal a single affected organ, even if multiple organs are afflicted with organ decay.

Organ decay will reach full saturation after 30 to 40 days. Accelerated organ decay, which appears on creepy joinersContent added by the Anomaly DLC, will take only 10 to 20 days to reach maximum saturation.



  • +5% Pain
  • -10% Part efficiency


  • +10% Pain
  • -25% Part efficiency


  • +15% Pain
  • -50% Part efficiency


  • +25% Pain
  • -75% Part efficiency
  • Complete loss of function at 1 severity.



If obtained by a disease event, it is detected immediately and starts at 0 severity. Severity increases over time, at a rate of 1.66% to 3.34% per day for normal organ decay, and at a rate of 5% to 10% for the accelerated version.Content added by the Anomaly DLC Organ decay can appear as a downside on creepjoiners or duplicatesContent added by the Anomaly DLC, although it initially stays undiagnosed. After diagnosis, it starts at 0.02% to 15% severity.

  • Minor - Severity: 0 - 0.199
  • Moderate - Severity: 0.2 - 0.399
  • Severe - Severity: 0.4 - 0.599
  • Extreme - Severity: 0.6 - 0.999
  • Loss of function - Severity: 1