Online co-op Mystery games

Every online co-op Mystery game on Steam we know of, newest first. Add tags or a price band to narrow it down.

Showing 121–130 of 352 games matching Mystery · updated 12 Oct 2026

Filters: Mystery × Clear all
$
Released
Price
$ · Cheap
Players
👥 Not stated
Reviews
0% of 2

One, Two, Death is a co-op psychological horror where you wake up in a mansion with one other person. Trust your partner to escape together — or betray them to earn your own freedom, while a sadistic creature watches every move.

If you loved these, you'll love this

$
Released
Price
$ · Cheap
Players
👥 Up to 4 players
Reviews
100% of 1

Command your forces against endless waves of enemies in this intense RTS. Build bases, manage resources, and defend the Omega Beacon across procedurally generated worlds. Play solo or team up with friends via Steam multiplayer.

Free
Released
Price
Free
Players
👥 Not stated
Reviews
83% of 6

Grab & Run | Alpaca Party is a physics-based multiplayer VR extraction adventure! The maps reshape every time, every object has real weight, and monsters are always watching. Team up with friends, embrace the chaos, and execute the perfect heist—or fail hilariously trying.

If you loved these, you'll love this

$
Released
Price
$ · Cheap
Players
👥 Up to 6 players
Reviews
90% of 6,441

KLETKA is a co-op (up to 6 players) horror game about going down in an elevator that is trying to eat you. Feed the elevator, explore deadly floors and descend deeper.

If you loved these, you'll love this

$
Released
Price
$ · Cheap
Players
👥 5–10 players
Reviews
100% of 6

ClusterCluck is a chaotic murder mystery game where not everyone is what they seem. Collect clues, complete tasks, deceive others and talk your way to safety. Whether hunting as a fox or surviving as a chicken, every player has unique skills that can change the game. Trust no one… and cluck wisely.

If you loved these, you'll love this

Free
Released
Price
Free
Players
👥 Up to 4 players
Reviews
51% of 27

A thrilling multiplayer horror game. Brave the terror solo or team up with friends (3 players max). Each level’s unique demon needs a distinct counter strategy. Traverse eerie areas, evade lurking threats, scavenge key items to survive... This job is high-risk—high pay always comes with deadly peril

If you loved these, you'll love this

$
Released
Price
$ · Cheap
Players
👥 5–16 players

This is a social inference game, you and your companions lurking in the evil forces, find your right partner, in the mysterious maze, together to complete the task! The game has randomly generated splicing plots, and has a variety of classes and props to play, let you and your friends to have fun!

If you loved these, you'll love this