Co-op games like GRAIN ROT
Below are 8 cooperative Steam games similar to GRAIN ROT, ranked by player overlap and content similarity. Every pick supports cooperative play — online co-op, LAN co-op, or shared/split-screen — so you can play with friends right out of the box. imho.run pulls from the same Steam category data Valve uses internally, so "Co-op" here matches what the store labels.
Want the full alternatives list (paid + free + Steam Deck + cheaper picks)? See the parent games like GRAIN ROT page.
Ranked picks
- 1
UnderMire
Co-op alternative to GRAIN ROT — playable with friends. Shares Action and Indie with GRAIN ROT.
Explore, fight, and SMUSH in this hand-drawn roguelite first person adventure! Descend a magical bunker filled with wild biomes, master magical tools, manage your fear gauge, overcome hazards, combat spooky enemies, and cause co-op chaos.
- 2
MISERY
Online Co-op alternative to GRAIN ROT — playable with friends. Shares Action and Indie with GRAIN ROT.
MISERY is a 1–5 player co-op survival game set in a nuclear disaster zone. Here, every day is a struggle: search radioactive ruins for resources, build your bunker, craft weapons, and explore a weird, procedurally-generated world with your friends. Beware of anomalies, monsters, and armed bandits.
- 3
HALLS
Co-op alternative to GRAIN ROT — playable with friends. Shares Action and Indie with GRAIN ROT.
HALLS is a co-op survival horror game set in a liminal space for 1-6 players. You end up stranded inside of the backrooms. Explore to gather resources, protect your base and craft gear to hunt giant bosses. Will you be able to find a way out of this space in between worlds?
- 4
Toypunk
Co-op alternative to GRAIN ROT — playable with friends. Shares Action with GRAIN ROT.
A roguelite third-person puppet-shooter where you wield an entire toybox of absurd weaponry. Fight hordes of cotton-stuffed baddies across fantastical biomes in single-player or co-op. Experience crazy synergies and unlock more toys between runs!
- 5
Rogue Kingdom
Co-op alternative to GRAIN ROT — playable with friends. Shares Simulation with GRAIN ROT.
Online roguelike where whole world is persistent, simulated and connected! Every player leaves a mark by their actions: Claim dungeons, settle the colonists, and defend it. Loot, mine, craft, cast magic, and level up alone or with friends. Explore strange depths and meet fellow adventurers!
- 6
Swarmhold
Co-op alternative to GRAIN ROT — playable with friends. Shares Action and Indie with GRAIN ROT.
Swarmhold is a base defense roguelite where you survive the relentless swarm. Gather resources, build your defenses, draft in-game upgrades, and fight alongside your base to hold the line. Play solo or with up to 3 friends.
- 7
DROSS
Co-op alternative to GRAIN ROT — playable with friends. Shares Action and Indie with GRAIN ROT.
DROSS is a procedurally Generated FPS, set in a derelict facility infested with alien bugs. Explore, collect powerful weapons and equipment, to upgrade your gear and fight the Dross.
- 8
Concrete Abyss
Co-op alternative to GRAIN ROT — playable with friends. Shares Indie with GRAIN ROT.
Liquidator, you have been re-assigned. Descend into a spatially unstable underground abyss, complete tasks assigned by the C.C.S.R. overseer, scavenge supplies and survive the horrors of the Kaldir conglomerate's negligence alone or with your fellow liquidators.