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 141–150 of 178 games matching Investigation · updated 12 Oct 2026

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$
Released
Price
$ · Cheap
Players
👥 2–8 players
Reviews
81% of 16

Catch the Vandal is an multiplayer game where 2-8 players take on the roles of both police officers and vandals. Officers must identify the vandals among the citizens, while the vandals try to disguise themselves and vandalize the city. Have fun competing to achieve objectives and win the game.

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$$
Released
Price
$$ · Standard
Players
👥 1–4 players
Reviews
84% of 295

Use the specialized equipment at your disposal to locate & log as many paranormal events as possible. Decipher the ingredients needed for your ritual and try to exorcise any demons within. Any incorrect ingredients and you may never leave! 1-4 Players

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Free
Released
Price
Free
Players
👥 1–4 players
Reviews
37% of 88

Mortuar is a 1-4 player Online co-op psychological horror game. Delve deep into Hoia Baciu Forest where eerie sightings and paranormal activity have transpired. Make use of various ghost hunting equipment to first identify the ghost's type, then attempt to banish it back to the afterlife.

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$
Released
Price
$ · Cheap
Players
👥 1–4 players
Reviews
40% of 5

This is a multi-person survival and escape game. You need to find what you need in the game. You can choose to leave immediately after finding what you need, or explore what happened in this area.

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$
Released
Price
$ · Cheap
Players
👥 Up to 4 players
Reviews
89% of 29

Terres is a challenging teamwork and communication based 4-player co-op puzzle adventure game. While inside the trials you can adjust everything from lighting, duration and visibility to enemy behaviour and difficulty. Creating entirely new ways to overcome the challenge. Includes Singleplayer.

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

Online co-op dystopian casual shooter game with some cyberpunk wibe that has some plot in it. A few quest lines that can be completed solo or with friends.

$$
Released
Price
$$ · Standard
Players
👥 Not stated
Reviews
100% of 1

Explore Islands and the ocean in a Singleplayer or a Coop adventure. Relaxing gameplay, music and hundreds of unique activities to do. Whether you are an Explorer of the unknown, a Farmer that wants to tend to thousand of crops or someone who enjoys combat through boss battles. This game is for you.

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$$
Released
Price
$$ · Standard
Players
👥 1–4 players
Reviews
92% of 367

This is a Ghost is an FPS psychological horror and investigation game for 1 to 4 players. Track down supernatural activity, identify demonic entities using specialised equipment, and banish them with crafted ammunition in solo or online co-op!

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$
Released
Price
$ · Cheap
Players
👥 2–4 players
Reviews
90% of 43

A Cooperative Mystery Unfolds: In 1948, four investigators come together to find a missing priest, only to be trapped in a sinister space. Through teamwork, they uncover clues, echoes of their pasts, and mysterious notes signed in their names......

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