GRAIN ROT Rot Sickness & Infection Guide

Rot sickness is GRAIN ROT’s persistent corruption debuff. Certain Corrupted attacks coat your vessel in rot ooze that survives extraction. If you ignore the meter, you sneeze, cough, or worse inside the Outpost — spreading infection to allies and potentially destroying upgraded rooms during elevator transit. This guide explains detection, the fire cure method, team protocols, and how to protect expensive Outpost layouts.

Read Survive the Corrupted to avoid application attacks, and room upgrades to understand what you lose when rot triggers structural collapse events.

How rot sickness works

The Rot originates in deep underground layers. It enters wood first, then corrupts the Spark. On players, rot manifests as a rising corruption percentage shown in the HUD (community footage shows values like 31% before symptoms). Symptoms include audible Geiger-counter-like feedback, sneezing, vomiting, and flatulence emotes that are funny until they infect teammates.

Rot is contagious at the Outpost. An uncured player can spread corruption to other vessels between runs, starting the next descent already compromised.

Curing corrupt infection at the Outpost

Detecting rot early

Check corruption meters before calling extract. Assign one player to announce “rot check” at elevator boarding. If anyone is above zero, decide collectively:

• Delay extract to finish cure on-site (risky if chased)
• Extract but cure immediately on surface before entering rooms
• Never ride elevator with active symptoms if rooms are highly upgraded

Demo players documented a bug-like interaction: riding the elevator while vomiting or sneezing from rot can destroy a random Outpost room, scattering furniture and undoing careful decoration. Treat this as a live mechanic until patched — always cure first.

Fire cure method (confirmed community technique)

The surface scorch kills rot on your vessel:

1. Return to Outpost with corruption > 0
2. Run outside into the scorch zone
3. Wait until your vessel catches fire and burns the rot away
4. Re-enter the Outpost before permanent vessel loss if timer applies
5. Repeat until corruption reads zero

This uses the same environmental fire that makes the surface lethal — ironic but effective. Multiple cycles may be needed for high corruption stacks.

Do not stand near teammates while burning; fire spreads chaos in co-op spaces.

Team infection protocols

Co-op groups should adopt simple rules:

• Rot carrier stays outside until cured
• No shared workshop until Geiger audio stops
• Call rot before elevator — abort boarding if symptomatic
• Flex player monitors spark-less allies who cannot self-cure quickly

These rules feel strict until you lose a tier-three cosmetic room to one sneeze.

Protecting upgraded Outpost rooms

Room upgrades cost significant gold and scrap — see room priority tier list. East Wing Resolve stamina, damage, health, and inventory tiers transform runs. Losing layout work because rot shattered walls is demoralizing.

Mitigation checklist:

• Cure rot every return, no exceptions
• Avoid decorative precision until elevator rot interactions are patched or documented stable
• Keep backup scrap for quick rebuilds
• Use Outpost Upgrade Planner to prioritize functional upgrades over fragile decor

Rot vs deep-layer environmental corruption

Deep layers increase ambient rot pressure even without direct hits. Long expeditions stack corruption faster. Set depth limits in Extraction Run Guide based on cure capacity — early crews should extract before rot meters climb rather than relying on fire cures repeatedly.

Launch expectations

Developers mention body corruption and mutation systems expanding at 1.0. Rot sickness rules may gain official UI tutorials or Outpost cure stations like the Enchantment & Repair Machine listed on launch features. We will update this guide when patch notes confirm changes.

Related guides

• Deep layer threats
• Outpost room upgrades
• Co-op & Spark Mechanics