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 201–210 of 352 games matching Mystery · updated 12 Oct 2026

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$$
Released
Price
$$ · Standard
Players
👥 Up to 2 players
Reviews
83% of 160

Team up with a friend to reach a lost submarine and prevent the outbreak of war. Work together on two devices to solve increasingly challenging puzzles, where each of you has your own unique role to play. 2 players: 1 buys the game, the other uses the free Companion App

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$$
Released
Price
$$ · Standard
Players
👥 1–8 players
Reviews
82% of 5,968

An open-world survival crafting game for 1–8 players, blending intense dungeon crawling and ARPG combat with peaceful farming and creative building. Take on quests and explore a vast, procedurally-generated world full of danger and discovery.

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$
Released
Price
$ · Cheap
Players
👥 1–4 players
Reviews
81% of 563

School 666 is a 1-4 Player Co-op Survival Horror. You must escape this endless nightmare. Try to identify the correct path and survive the anomalies in this endless school. Some extremely powerful anomalies will catch you to their dimensions. Explore the reason why you are here... and don't die.

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$
Released
Price
$ · Cheap
Players
👥 Up to 4 players
Reviews
16% of 6

In BodyPanic, survive in an abandoned house with friends or alone. Every night you will be attacked by unique monsters and you will have to find different strategies to fight them. Learn from mistakes, adapt to situations and immerse yourself in the creepy atmosphere.

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$
Released
Price
$ · Cheap
Players
👥 Up to 4 players

Explore a dark, dangerous scientific facility with three friends… or enemies. What Lurks Inside is a co-op (or singleplayer) horror game with strategic, roleplaying, and survival elements. Will you escape the laboratory with your teammates, or slay your friends as the monster?

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$
Released
Price
$ · Cheap
Players
👥 Up to 2 players
Reviews
84% of 717

Two detectives, one deadly experiment, a race against time. Each player only has one half of the puzzle. In this 2-player co-op puzzle game you can survive the parallel experiment only by working together.

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$
Released
Price
$ · Cheap
Players
👥 Not stated
Reviews
97% of 35

Victor’s Test: a trial of supernatural resistance. Guard the museum at night, spot artifact anomalies, and adapt as doors shift—triggering or erasing them. Welcome to Victor’s Test Night: Rêves.

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$
Released
Price
$ · Cheap
Players
👥 Up to 4 players
Reviews
55% of 89

Deadly Quiet is a 4-player co-op asymmetrical horror game set in the eerie Hoia Baciu forest. Featuring a bodycam perspective, your fate depends on your actions and the cooperation of your entire team. But remember to STAY QUIET.

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$
Released
Price
$ · Cheap
Players
👥 Not stated
Reviews
72% of 55

“PENTALOOP” is, a GM-less Murder Mystery game for 4 players. Play with family, friends, and like-minded people, Play together with your family, friends, or other like-minded people.

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