Grain Rot Wiki

Grain Rot Wiki

Complete guide hub for the horror co-op extraction builder by Beck & Branch Games. Vessels, constructs, enemies, biomes — everything you need to survive the Rot.

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Beginner

Beginner Guide: First Hour in the Ruins

New to Grain Rot? Learn the core loop — possess vessels, scavenge loot, fight Corrupted, and extract alive. Everything a new Spark needs to know.

Updated: 2026-08-11

Enemies

All Enemies Guide: Every Corrupted Type

The Corrupted explained: the confirmed detection model, the 9 demo enemy types, and the combat principles that hold against any of them.

Updated: 2026-08-11

Builds

Best Vessels & Loadouts Guide

How to evaluate vessels and constructs without a verified tier list — the confirmed build framework and loadout principles.

Updated: 2026-08-11

Co-op

Co-op Guide: Team Strategies for Up to 4 Players

How to coordinate roles, share the haul, protect the Keeper, and survive the game's confirmed chaos mechanics — communication tips and team strategy.

Updated: 2026-08-11

Extraction

Extraction Guide: How to Extract Successfully

Master the extraction loop — when to push deeper, when to bail, and how to protect the haul on the way out.

Updated: 2026-08-11

Building

Outpost Guide: Base Building & Progression

What base building actually means in Grain Rot: the Sanctuary Outpost's confirmed systems — stat upgrades, rescued survivors, upgradeable rooms — and upgrade priorities.

Updated: 2026-08-11

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Frequently Asked Questions

What is Grain Rot?
Grain Rot is a horror co-op extraction builder developed by Beck & Branch Games and published by Neem Interactive. You play as a "Living Spark" inhabiting fragile wooden vessels, descending into procedurally shifting underground ruins with up to 3 friends to scavenge loot, fight or avoid Corrupted enemies, and extract before the Rot consumes you. It launched on Steam on August 7, 2026.
Is Grain Rot free to play?
No. Grain Rot is a paid game on Steam — $9.99, with a 10% launch-week discount to $8.99 at launch. A free demo is available on Steam with 20+ unlockable constructs and 3 biomes.
How many players can play co-op?
Grain Rot supports up to 4 players in online co-op. You and your friends each control a Living Spark that can possess different wooden vessels. Teamwork is essential — but the game also encourages friendly chaos with physics-driven trolling mechanics.
Can I play Grain Rot solo?
Yes. Grain Rot is fully playable solo — single-player is confirmed. The experience is designed around co-op chaos, but solo play emphasizes stealth and careful resource management rather than team tactics.
What platforms is Grain Rot on?
Grain Rot launched on PC via Steam on August 7, 2026. Console versions (PS5, Xbox Series X|S) have not been announced.
Is there a demo available?
Yes! A free demo is available on Steam. It includes 3 underground biomes, 9 enemy types, over 20 unlockable constructs and weapons, upgradeable Outpost rooms, dungeon modifiers, and cosmetics. Demo progress did not carry over to the full game.