Online co-op Investigation games

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

Showing 131–140 of 178 games matching Investigation · updated 12 Oct 2026

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$
Released
Price
$ · Cheap
Players
👥 Up to 10 players
Reviews
85% of 21

A multiplayer social deduction game with mystery, mischief, and magic! Use magical abilities and your powers of deduction to figure out who in your party of Wizards is a secret traitor. One (or more) in your group is truly evil... but Which Wizard is it?

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Free
Released
Price
Free
Players
👥 Not stated
Reviews
43% of 86

A mysterious adventure at the old manor begins. Become a detective and solve the vanishing of the elusive Mister X. Uncover the secrets of the manor and its inhabitants. Find hidden objects, solve challenging puzzles and explore all the corners of the estate.

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$
Released
Price
$ · Cheap
Players
👥 Not stated
Reviews
66% of 12

Vicera is an online co-op game. Play as relic hunters, solving enigmatic mysteries and escaping a terrifying monster. Will you dare to face the darkness to find the cursed relics?

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$
Released
Price
$ · Cheap
Players
👥 Not stated

The Demo & payable both have the same content. Blessed Curse is a 4-player, online co-op, psychological horror game. Take on a rumor you've received of a haunted location in Japan. At the scene utilize your entity-hunting equipment to gather evidence and figure out what might be residing there.

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Free
Released
Price
Free
Players
👥 Not stated
Reviews
82% of 23

Your choices. Your adventures. Become the heroes of the Tales Up universe! You decide which path to take. Choose your team wisely and explore a new kind of role-playing game with Tales Up, the interactive multiplayer adventure video game.

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$
Released
Price
$ · Cheap
Players
👥 1–4 players
Reviews
60% of 5

Don't Get Fired! Clock into this Party-Horror adventure for 1-4 players. Hide, run, complete objectives, steal money and escape before you get caught and fired! Team up with or challenge friends in this spooky multiplayer adventure, available in both VR and non-VR modes.

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$
Released
Price
$ · Cheap
Players
👥 Not stated
Reviews
100% of 6

Murder Next Room is a multiplayer social deduction game. You are trapped in a location with others and one or more of them are killers. The police has been called and in the mean time try to survive. You can try to report the killer but there is no guarantee that the phones will be working.

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$$
Released
Price
$$ · Standard
Players
👥 Not stated
Reviews
33% of 278

Demonsomnia is a CO-OP multiplayer bodycam horror game focused on the impact of nuclear reactions. Radiation has spread everywhere, so put on your gas mask. Your goal is to activate the nuclear reactor device and escape without being caught by mutants.

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$
Released
Price
$ · Cheap
Players
👥 Up to 4 players
Reviews
54% of 24

INFESTSTATION is a multiplayer Sci-Fi horror game. Board danger-filled abandoned space craft, work together to complete objectives, and sever the dimensional gateways that have allowed horrifying threats to take over and infest these now derelict spaces.

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$
Released
Price
$ · Cheap
Players
👥 Up to 5 players
Reviews
89% of 280

"Escape Memoirs: Safe House" is a co-operative reverse escape-room puzzle game. You are a member of a criminal organization who must break into one of their own safe houses to fetch some important tools. Do you think you have what it takes to overcome the puzzles that stand in your way?

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