GRAIN ROT Patch Notes (1.01–1.06)

GRAIN ROT launched on Steam on August 7, 2026, and Beck & Branch Games has already shipped six launch-window patches — 1.01 through 1.06. This hub consolidates official Steam news so crews can separate known bugs, fixed bugs, and new Outpost / lobby tools. Pair it with launch features, the multiplayer lobby guide, and the day-one checklist.

Steam purchaser reception sits at Very Positive — roughly 89% positive from about 874 purchaser reviews at wiki update time. Always verify the latest post on the Steam news hub before blaming your crew for a missing legendary gumball reward.

Why patch notes matter in an extraction builder

GRAIN ROT runs on physics, save persistence, and co-op client sync. A bug that destroys client loot on disconnect, blocks respawns, or fails friends-only lobby joins can wipe a profit night even when extraction timing is perfect. Reading patch notes is run insurance.

Patch 1.06 (August 11, 2026 window)

Official Steam summary for Patch 1.06:

• Fixed so Quill shouldn’t catch fire on his patrol route outside the Outpost.
• Fixed a bug where a legendary gumball would not give any reward.
• Added security measurements for incoming connection.

What this means in practice

Quill fire route: An Outpost NPC pathing into surface fire wasted attention and looked broken. After 1.06, expect Quill’s outdoor patrol to stop self-immolating — useful when decorating near balconies (also safer for vessels after 1.04’s balcony fire fix).

Legendary gumball rewards: Legendary gacha / gumball rolls that granted nothing broke trust in the artifacts & blueprints loop. Update before grinding deep for legendary rolls.

Connection security: Hardening for incoming multiplayer connections — keep Steam and the game updated before public LFG sessions.

Patch 1.05 (August 10, 2026)

Official Steam summary for Patch 1.05:

• Fixed missing Localization.
• Fixed a bug where you could not join friends when lobby privacy was set to friends.

What this means in practice

Localization: Interface strings that were blank or English-only in some locales should populate again. If you still see missing UI text, verify game files and report with language setting screenshots via official links.

Friends-only join: Patch 1.04 added lobby privacy settings; 1.05 fixed the friends-privacy join path. Crews using Friends Only should retest invites after updating — details on multiplayer lobby.

Patch 1.04 (August 10, 2026)

Official Steam summary for Patch 1.04:

• Added start/stop follow animation and sound for Little Buddy.
• Fixed an issue where items owned by a client were destroyed when they left — they should now drop on the ground or move to the lost and found crate.
• Fixed a bug where the player could not respawn because the area was blocked.
• Fixed a bug where Grain Rot was visible through certain unrepaired ceiling modules.
• Fixed so Vessels can stand on all balconies without taking fire damage.
• Fixed Mini Plant collision so it is easier to place on shelves.
• Added multiplayer settings for lobby privacy and max player count.
• Added a view lobby menu to adjust player mic volume and kick / ban players.

Player-facing highlights

Little Buddy follow: Clearer start/stop follow feedback helps companions track without silent confusion — practice in the Outpost before deep runs.

Client loot safety: Leavers no longer vaporize carried items. Expect drops or lost-and-found recovery — critical for Grinder & loot fairness.

Respawn blocking: Soft-locks from blocked spawn volumes should be rarer after 1.04.

Ceiling rot bleed + balcony fire: Visual rot through unrepaired ceilings and fire damage on balconies made surface decorating feel hostile. Both are addressed — rebuild ceilings and use balcony space for constructs again (constructs & furniture).

Lobby tools: Privacy, max players, mic sliders, kick/ban — see the dedicated multiplayer lobby guide.

Patch 1.03 (August 9–10, 2026)

• Fixed a bunker door in the ancient facilities that clients could not open.
• Fixed saves that could load into a black void.
• Fixed key bindings that did not save correctly.

Retest ancient facilities as a joiner after updating. Re-check dropkick binds on keyboard & mouse.

Patch 1.02 (August 9, 2026)

• Welcome message for new joiners.
• Hatch above the elevator for physics experiments (dropkick physics).
• Double-fixed deep-layer coin/fuse pickup bugs.
• Offline Steam save loading fixed.
• Wall-attached construct state after save load fixed.
• Infinite vibration on stacked objects fixed.
• Deep-layer boss mesh appearing at Outpost fixed.
• Mallet disappearing on pickup fixed.
• Wrong highscore display fixed.
• Rolling boulder trap invisible to clients fixed.

Patch 1.01 (August 8, 2026)

• Deep-layer coin/fuse pickup fix (continued in 1.02).
• Tables appear under furniture category in build menu.
• Performance fix for light invalidation.

Launch-window cadence

Patch	Approx. date	Theme
1.01	August 8, 2026	Pickup + performance + build menu
1.02	August 9, 2026	Hatch, offline saves, traps, mallet
1.03	August 9–10, 2026	Client doors, black-void saves, keybinds
1.04	August 10, 2026	Lobby tools, Little Buddy, loot/respawn, balcony fire
1.05	August 10, 2026	Localization + friends-privacy joins
1.06	August 11, 2026	Quill fire, legendary gumball, connection security

The $8.99 intro offer still runs through August 21, 2026 — see release date & price.

How to stay updated

1. Enable Steam auto-update for app 4450620.
2. Skim Steam news before long co-op nights.
3. Cross-check Discord via official links.
4. Revisit this page after major posts.
5. Do not treat Reddit rumors as patch notes.

Systems touched so far

Stability, fairness, lobby UX, Outpost decoration, and gacha reward integrity — not a full combat rebalance. Tier lists stay valid unless a future patch changes numbers.

Related reading

• Multiplayer lobby
• Twitch Drops — through August 14, 2026
• Post-launch roadmap
• Is GRAIN ROT worth it?

Related

• Launch features
• Release hub
• Wiki official channels