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 91–100 of 352 games matching Mystery · updated 12 Oct 2026

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$ · Cheap
Players
👥 Not stated
Reviews
75% of 4

Monkey See, Monkey Doo, Monkey Kiss You is a gripping first-person horror adventure. Stranded in a sinister forest, evade amorous monkeys while navigating treacherous paths. Face chilling encounters, uncover mysteries, and fight for survival in this pulse-pounding tale of fear and tension.

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Price
$ · Cheap
Players
👥 Not stated
Reviews
73% of 426

A frantic co-op puzzle game where a Pilot and an Air Traffic Controller must communicate, decrypt, and improvise to save a failing aircraft. Talk fast, solve faster, and try not to crash.

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$
Released
Price
$ · Cheap
Players
👥 Up to 2 players
Reviews
100% of 11

🐱🚀 Find 2,000 hidden cats across 20 cosmic maps 🌌. Relax with guided color-by-numbers 🎨. Play solo or online co-op 👯‍♂️, while Meow FM 🎶 sets the galactic mood.

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Price
$$ · Standard
Players
👥 Not stated
Reviews
86% of 80

In The Good Dog: Chasing Shadows, play as a dog defending your family from paranormal creatures. Explore the world and solve environmental puzzles to save your loved ones and uncover the mystery.

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Released
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$ · Cheap
Players
👥 3–16 players

Enter BETRAYED, a chaotic 3–16 player party shooter where trust collapses, lies spread fast, and paranoia turns friends into enemies. Use proximity voice chat to manipulate the room, earn Blood Credits for deadly traitor tools, and make every round end in suspicion, chaos, and betrayal.

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Released
Price
$$ · Standard
Players
👥 Up to 2 players
Reviews
87% of 1,403

In a world where electric cars reign supreme, you are now the owner of an old gas station out in the wilderness. Establish trade, develop your business and uncover the secret of this strange place in the compact gas station simulator.

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Released
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$ · Cheap
Players
👥 Not stated
Reviews
98% of 94

Mycelium: The Silent Contract is a co-op/single player extraction horror set in a haunted liminal forest. Your contract is simple: get mycelium and extract. But in this forest, nothing is what it seems. So what did you sign, exactly?

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Released
Price
$ · Cheap
Players
👥 Not stated
Reviews
80% of 10

VIDEO CHAPEL is a virtual art installation by Jonathan Turner and Marsia Alexander-Clarke. Through First Person and VR, users can explore the secrets of a sprawling exhibition environment offering new interpretations, freedoms, and constraints.

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Released
Price
$ · Cheap
Players
👥 2–3 players
Reviews
100% of 2

A narrative RPG where every choice reshapes the story. Build your party from 56 unique classes, fight through three branching tales of mystery and betrayal, and discover that some paths can't be retraced.

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