Grain Rot is a horror co-op extraction builder set in a scorched wasteland where everything burns. Descend into shifting ruins, rip out furniture, and escape the corrupted, then drag the haul home to rebuild the Outpost.

Grain Rot is a horror co-op extraction builder set in a scorched wasteland where everything burns. Descend with your friends into shifting ruins, rip out furniture, and scavenge for loot before the Corrupted close in. Make it back alive, then rebuild the Outpost to better your chances for the next run.<video class="bb_img" autoplay muted loop playsinline poster="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/4450620/extras/2c9b20cc8a3ab6f8d39ad6218c6aed35.poster.avif?t=1778786023" aria-label="Two players swap bodies by ejecting their sparks, POV of two players getting their sparks kicked out of their bodies, third person POV of a player getting their sparks kicked out of its body, a player waving while standing in the sun on fire until they blow up and their spark pops out." width=1170 height=658 ><source src="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/4450620/extras/2c9b20cc8a3ab6f8d39ad6218c6aed35.webm?t=1778786023" type="video/webm; codecs=vp9"><source src="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/4450620/extras/2c9b20cc8a3ab6f8d39ad6218c6aed35.mp4?t=1778786023" type="video/mp4"></video>You are a Living Spark surviving inside fragile wooden vessels that splinter, collapse, and catch fire. When your vessel breaks, the Spark escapes. Death is just a change of scenery.<video class="bb_img" autoplay muted loop playsinline poster="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/4450620/extras/51bc02e415e53d487c6e004c9affc576.poster.avif?t=1778786023" aria-label="3 players enter basement elevator, view of the RNG fuses in the elevator, 4 players walking through a catwalk, POV player picking up a crate with both robot arms outstretched, player puts furniture in the grinder, furniture grinding up, coins coming out of the grinder" width=1170 height=658 ><source src="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/4450620/extras/51bc02e415e53d487c6e004c9affc576.webm?t=1778786023" type="video/webm; codecs=vp9"><source src="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/4450620/extras/51bc02e415e53d487c6e004c9affc576.mp4?t=1778786023" type="video/mp4"></video>Ride a cursed elevator into shifting underground ruins with your crew. Smash furniture for resources or feed them into the Grinder for gold. If everyone breaks, your loot is lost.<video class="bb_img" autoplay muted loop playsinline poster="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/4450620/extras/6c78697e471e8240b2fa2d7a8fe04e96.poster.avif?t=1778786023" aria-label="3 players trap a large monster in a trap and simultaneously attack it, a teammate dropkicks another teammate off a ledge, allies pointing at a clapping player with a hat on with the &quot;!&quot; appearing above their head, ally in shop starts shooting player, one player blocking another in a hallway with a monster, all four players on the floor out of energy on the floor as sparks " width=1170 height=658 ><source src="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/4450620/extras/6c78697e471e8240b2fa2d7a8fe04e96.webm?t=1778786023" type="video/webm; codecs=vp9"><source src="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/4450620/extras/6c78697e471e8240b2fa2d7a8fe04e96.mp4?t=1778786023" type="video/mp4"></video>Trolling can become your friend’s demise. Dropkick enemies or “accidentally” launch your ally’s Spark out of their vessel. Block them in a monster-infested corridor or get stuck in the crossfire. Will your group handle the chaos you created yourselves?<video class="bb_img" autoplay muted loop playsinline poster="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/4450620/extras/648da7a7ea0bfe77f6f2793544b82374.poster.avif?t=1778786023" width=1170 height=658 ><source src="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/4450620/extras/648da7a7ea0bfe77f6f2793544b82374.webm?t=1778786023" type="video/webm; codecs=vp9"><source src="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/4450620/extras/648da7a7ea0bfe77f6f2793544b82374.mp4?t=1778786023" type="video/mp4"></video>The deeper you go, the worse the Rot becomes. Bodies warp. Voices distort. Emotes become…worse. Or possibly better?<h2 class="bb_tag" ><video class="bb_img" autoplay muted loop playsinline poster="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/4450620/extras/3631b84557489e722f7217958a79e0e3.poster.avif?t=1778786023" width=1170 height=658 ><source src="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/4450620/extras/3631b84557489e722f7217958a79e0e3.webm?t=1778786023" type="video/webm; codecs=vp9"><source src="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/4450620/extras/3631b84557489e722f7217958a79e0e3.mp4?t=1778786023" type="video/mp4"></video></h2>The Deep Layers are filled with Corrupted vessels, reacting to sound, movement, and each other in ways that are impossible to predict. Fight. Build. Run. Panic. <video class="bb_img" autoplay muted loop playsinline poster="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/4450620/extras/3db9fe1c67f0017079a7404080929382.poster.avif?t=1778786023" aria-label="A player dies and its spark flies out, their spark follows a fellow player, a spark leaves a fire ant vessel that&#039;s dancing and another player takes over that vessel, POV of being in the fire ant vessel and shooting the flamethrower at an enemy, a spark entering a goat vessel body, third person POV of a player body dancing with the goat vessel dancing and a third player pinging the monster in between them all, POV of entering a monkey body, POV of running around as the monkey vessel playing its drum before dying and becoming a spark" width=1170 height=658 ><source src="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/4450620/extras/3db9fe1c67f0017079a7404080929382.webm?t=1778786023" type="video/webm; codecs=vp9"><source src="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/4450620/extras/3db9fe1c67f0017079a7404080929382.mp4?t=1778786023" type="video/mp4"></video>When your vessel breaks, you stay in the run as a Spark. Guide your team through the dark and search for another host with a new set of abilities. Force your way back in before you fade out completely.<video class="bb_img" autoplay muted loop playsinline poster="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/4450620/extras/f6625d3c37061184af19bd1102f467ba.poster.avif?t=1778786023" aria-label="A player pulls a lever on a gacha ball machine and a purple ball comes out, a machine opens the ball and reveals a piece of furniture acquired and the word &quot;Rare&quot;, POV of building and placing down a furniture item and seeing &quot;+14&quot;, &quot;+1&quot;, and &quot;Room Level Up&quot; on the UI as it is placed, a time lapse of a third person view of two players decorating an entire room from nothing, a player building a phone and picking up the receiver to make a call, a fully decorated shop with the shop npc and a player laughing on top of the npc&#039;s desk" width=1170 height=658 ><source src="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/4450620/extras/f6625d3c37061184af19bd1102f467ba.webm?t=1778786023" type="video/webm; codecs=vp9"><source src="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/4450620/extras/f6625d3c37061184af19bd1102f467ba.mp4?t=1778786023" type="video/mp4"></video>Everything you haul back rebuilds your Outpost. Unlock interactive furniture, stat upgrades, rescued survivors, and stranger ways to survive the next descent. The stronger the outpost becomes, the deeper you can afford to go.<video class="bb_img" autoplay muted loop playsinline poster="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/4450620/extras/f94b807785706368accd6b3303b5f172.poster.avif?t=1778786023" width=1170 height=658 ><source src="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/4450620/extras/f94b807785706368accd6b3303b5f172.webm?t=1778786023" type="video/webm; codecs=vp9"><source src="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/4450620/extras/f94b807785706368accd6b3303b5f172.mp4?t=1778786023" type="video/mp4"></video> Go deeper. Extract more. Leave someone behind. Make it back and build together. Or don’t come back at all. <h2 class="bb_tag" >FEATURES</h2><ul class="bb_ul"><li>Possess and swap between fragile wooden vessels</li><li>Co-op extraction horror with physics-driven chaos</li><li>Tactical carpentry with interactive furniture</li><li>Procedurally shifting underground dungeons</li><li>Persistent Outpost rebuilding and progression</li><li>Rage-bait your friends with cursed emotes</li><li>Rescue survivors trapped in the Deep Layers</li><li>Body corruption and mutation systems</li><li>Questionable cosmetics</li></ul>

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GRAIN ROT Achievements