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GRAIN ROT Wiki

Guides, Outpost builds, tier lists, and launch tips for GRAIN ROT.

Unofficial GRAIN ROT wiki with co-op guides, Outpost upgrade paths, Corrupted tactics, and day-one Steam launch tips for PC players.

Buy on Steam Read the getting started guide
Out Now
Steam release
$9.99
Base price
4P
Online co-op
89%
Very Positive
GRAIN ROT co-op extraction run in underground ruins
Fan Wiki
Explore the wiki

Every hub organized by what players search after the Steam launch.

Guides

GRAIN ROT Guides & Walkthroughs Hub

GRAIN ROT guides hub: getting started, vessel types, co-op Spark mechanics, survivor rescues, extraction runs, and Outpost progression tips.

Read guide Controls

Controls Hub

GRAIN ROT controls hub: keyboard and mouse defaults, controller and Steam Deck support, rebinding tips, and accessibility for co-op horror.

Read guide Outpost

GRAIN ROT Outpost Guide Hub

GRAIN ROT Outpost hub: room upgrades, constructs, artifacts, blueprint unlocks, morale systems, and persistent base-building between runs.

Read guide Tier List

Tier List Hub

GRAIN ROT tier lists hub: best Outpost room order, top constructs, weapon rankings, and demo-tested priority guides for co-op runs.

Read guide Enemies

GRAIN ROT Enemies & Corrupted Hub

GRAIN ROT enemies hub: Corrupted behavior, deep layer threats, rot attacks, sound triggers, and co-op horror combat reference for players.

Read guide Maps

GRAIN ROT Maps & Biomes Hub

GRAIN ROT maps hub: procedural underground ruins, demo biome overview, deep layer zones, elevator modifiers, and launch biome expansion.

Read guide Release

GRAIN ROT Release Information Hub

GRAIN ROT release hub: out now on Steam, $9.99 base price, intro offer, Very Positive reviews, demo history, and 1.0 features.

Read guide Tools

GRAIN ROT Wiki Tools Hub

GRAIN ROT wiki tools hub: Outpost Upgrade Planner for room priority, gold budgeting, and co-op build planning between extraction runs.

Read guide Review

GRAIN ROT Reviews & Verdict Hub

GRAIN ROT review hub: worth $9.99?, Very Positive Steam reception, Lethal Company comparisons, pros/cons, and who should buy.

Read guide Links

Official Links

GRAIN ROT official links: Steam store, Discord community, Beck and Branch Games developer, Neem publisher, and Creator Partner resources.

Read guide
Featured guides

Deep walkthroughs for Spark mechanics, vessel types, extraction, and rot sickness.

Guides

GRAIN ROT Guides & Walkthroughs Hub

GRAIN ROT guides hub: getting started, vessel types, co-op Spark mechanics, survivor rescues, extraction runs, and Outpost progression tips.

Read guide Outpost

GRAIN ROT Outpost Guide Hub

GRAIN ROT Outpost hub: room upgrades, constructs, artifacts, blueprint unlocks, morale systems, and persistent base-building between runs.

Read guide Release

GRAIN ROT Release Information Hub

GRAIN ROT release hub: out now on Steam, $9.99 base price, intro offer, Very Positive reviews, demo history, and 1.0 features.

Read guide Review

GRAIN ROT Reviews & Verdict Hub

GRAIN ROT review hub: worth $9.99?, Very Positive Steam reception, Lethal Company comparisons, pros/cons, and who should buy.

Read guide Tier List

Tier List Hub

GRAIN ROT tier lists hub: best Outpost room order, top constructs, weapon rankings, and demo-tested priority guides for co-op runs.

Read guide Tools

GRAIN ROT Wiki Tools Hub

GRAIN ROT wiki tools hub: Outpost Upgrade Planner for room priority, gold budgeting, and co-op build planning between extraction runs.

Read guide
Launch snapshot

Key facts for players jumping into the full Steam release.

GRAIN ROT is out now

Full Steam release shipped August 7, 2026 at $9.99 (10% launch-week intro to $8.99). See release date and price.

Very Positive reviews

Launch reviews sit at Very Positive (~89% of ~874). Read Is GRAIN ROT worth it? before your first crew night.

Launch-week patches live

Patches 1.01–1.06 already fixed pickups, saves, and client doors. Read patch notes and claim Twitch Drops before August 14.

Day-one checklist

Crews jumping in tonight should follow the day-one checklist — buy, install, assign roles, then extract smart.

Core gameplay loop

How a standard GRAIN ROT session flows from Outpost to elevator and back.

  1. 1

    Prepare at the Outpost

    Repair rooms, cure rot, and pick upgrades using the Outpost hub before anyone enters the cursed elevator.

  2. 2

    Descend and loot ruins

    Smash furniture for scrap, grab glowy artifacts, and follow the extraction run guide so noise does not spiral.

  3. 3

    Grind gold under pressure

    Feed high-value loot into the Grinder when anchors hold doors — details in Grinder & loot loop.

  4. 4

    Extract before total wipe

    If every vessel breaks, loot is lost. Use Co-op Spark mechanics to rescue allies and board early.

  5. 5

    Reinvest and go deeper

    Spend gold on room priority upgrades and roll artifacts via the Outpost Upgrade Planner.

Start here

Jump to the most useful pages with context — no bare URLs.

Official channels

Verify patch notes on official links — Discord for LFG, Steam for news.

FAQ

Wiki FAQ

Quick answers to the most common questions.

What is GRAIN ROT?

A horror co-op extraction builder on Steam where Living Sparks pilot wooden vessels, loot underground ruins, and rebuild an Outpost between runs.

Is this an official wiki?

No. grain-rot.wiki is a fan-made guide site. Confirm dates and features on Steam and Discord linked from our wiki page.

When did the game release?

August 7, 2026 on Steam for PC. Base price is $9.99 with a launch-week intro offer listed on the store.

Does the demo still work?

The Steam Next Fest demo ended in June 2026. Buy the full game on Steam for 1.0 access.

Are there promo codes?

No redeemable promo codes for this premium Steam title. Use the official Steam intro discount while it lasts.

Which languages are supported?

This wiki supports: English, Français, Deutsch, Español, Português (BR). Use the language menu in the header to switch locales.