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 121–130 of 178 games matching Investigation · updated 12 Oct 2026

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$$
Released
Price
$$ · Standard
Players
👥 Not stated
Reviews
87% of 8

The goal is simple : Open the Door and Escape. From the moment you enter, you'll face a series of devious puzzles, perfect for solo or collaborative play with friends. Built from the ground up for immersive VR, this episodic adventure brings the thrill of real-world escape rooms to virtual reality.

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$
Released
Price
$ · Cheap
Players
👥 4–8 players
Reviews
85% of 27

Summon Cthulhu in this social deduction game with no early eliminations! Monsters work together to complete the ritual, while stealthy humans secretly sabotage and cause chaos.

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$
Released
Price
$ · Cheap
Players
👥 Not stated
Reviews
0% of 1

Ambasu, an online role-playing game with 10 characters, has a much simpler and more balanced gameplay system compared to its counterparts. You can gain great experiences by playing fast and fun matches both alone and with your friends.

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$
Released
Price
$ · Cheap
Players
👥 Up to 2 players

Escape from the depths of hell in VR! Solve puzzles with a friend, customize your avatar, and explore Hades' prison with no time limit. Developed by two escape game enthusiasts.

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$
Released
Price
$ · Cheap
Players
👥 1–4 players
Reviews
80% of 5

Daemonium is a 1-4 player online co-op psychological horror game. Demonic possessions are running rampant. Grab your equipment, join your team, and locate the source of the demonic presence. Enter the portal to the demon realm and perform an exorcism to banish the demon to hell.

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$
Released
Price
$ · Cheap
Players
👥 Up to 4 players
Reviews
72% of 235

Explore haunted locations, collect paranormal evidence, and survive the revenge of the former residents still haunting them. Team up with up to 3 friends to figure out the ghost, however, what begins as an investigation quickly turns into a desperate struggle to stay alive.

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$
Released
Price
$ · Cheap
Players
👥 1–4 players

A chilling VR and Flatscreen co-op game where you investigate a haunted house, race against phantoms, and unravel eerie anomalies. Survival is a test of memory and teamwork!

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$
Released
Price
$ · Cheap
Players
👥 2–8 players
Reviews
100% of 23

Where is Billy? is a hide-and-seek party game for 2-8 players playable locally and online. Figure out which character you are and blend into the crowd to complete various objectives across multiple game modes. Act natural, avoid detection, and outsmart your opponents!

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$
Released
Price
$ · Cheap
Players
👥 Up to 4 players
Reviews
50% of 54

Dive into horror in Entities. Solo or up to 4-player matches offer dynamic puzzles, relentless entities, and extraction shooter mechanics. Investigate, unlock paths, and survive in dangerous zones as a private operator. Master skill and terror. Are you ready to confront the unknown?

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Free
Released
Price
Free
Players
👥 4–8 players
Reviews
86% of 29

ALFRED is a BAD GUY is a multiplayer board game that combines dice duelling, lying and investigation. Each player has a secret role and a different objective in the game. Bring out your dice and your lying skills to win in ALFRED is a BAD GUY!

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