Co-op games like MIMESIS
Below are 9 cooperative Steam games similar to MIMESIS, 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 MIMESIS page.
Ranked picks
- 1

Nuclear Nightmare
Online Co-op alternative to MIMESIS — playable with friends. Shares Action and Indie with MIMESIS.
Venture forth as part of a specialized team of fellow players tasked with retrieving classified materials, evading the black goo virus, and the nightmarish entities it has spawned. With time running out before the US government initiates a devastating nuclear strike to contain the spreading menace.
- 2

Backrooms: Extractions
Online Co-op alternative to MIMESIS — playable with friends. Shares Action and Indie with MIMESIS.
Cooperate with up to 6 players to explore, search, and extract lost agents within the Backrooms. Solve puzzles, unlock tools, survive against entities, and progress through increasingly dangerous levels.
- 3

Dark Hours: Prologue
Online Co-op alternative to MIMESIS — playable with friends. Shares Action and Adventure with MIMESIS.
Dark Hours: Prologue is a free co-op survival horror game for 1-4 players. Your heist has been disrupted by a supernatural event, and your team of robbers is now trapped with a monster. Forget your plan, your mission: survive! Explore and cooperate to find a way out or hide and wish for daylight.
- 4

PANICORE
Online Co-op alternative to MIMESIS — playable with friends. Shares Action and Indie with MIMESIS.
PANICORE is a survival horror game that mixes permadeath, AI monsters and a co-op experience up to 5 players (4 players in demo). Try to escape and don't get caught, but beware: they don't only hear your steps, but also your voice.
- 5

Species: Unknown
Co-op alternative to MIMESIS — playable with friends. Shares Action and Indie with MIMESIS.
Species: Unknown is a 1 to 4 players co-op survival horror. Complete high-risk missions aboard an abandoned ship while being hunted by an unknown creature. Survive and upgrade your gear to face each new threat that lurks in the dark.
- 6

Lethal Company
Online Co-op alternative to MIMESIS — playable with friends. Shares Action and Indie with MIMESIS.
A co-op horror about scavenging at abandoned moons to sell scrap to the Company.
- 7

CRYO
Online Co-op alternative to MIMESIS — playable with friends. Shares Action and Indie with MIMESIS.
CRYO is a multiplayer co-op survival horror for 1-4 players. You have been deployed by your company to various locations around the Antarctic due to communication issues. What awaits you in these dark, remote regions is far more sinister than a technical fault...
- 8

Zort
Online Co-op alternative to MIMESIS — playable with friends. Shares Action and Indie with MIMESIS.
Zort is an action, adventure, and horror game that can be played with up to 4 people. Explore maps with your friends and have fun while escaping from various creatures. Experience a realistic horror experience with in-game voice chat with your friends!
- 9

R.E.P.O.
Online Co-op alternative to MIMESIS — playable with friends. Shares Action and Early Access with MIMESIS.
An online co-op horror game with up to 6 players. Locate valuable, fully physics-based objects and handle them with care as you retrieve and extract to satisfy your creator's desires.