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 61–70 of 178 games matching Investigation · updated 12 Oct 2026

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$$
Released
Price
$$ · Standard
Players
👥 Up to 4 players
Reviews
51% of 31

N.O.X. is a co-op horror game where up to four players take on the roles of paranormal investigators. Players must find clues, identify the type of spirit, and banish it using their tools, either alone or together with their crew.

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$
Released
Price
$ · Cheap
Players
👥 1–5 players
Reviews
70% of 459

Severance is a 1-5 player paranormal investigation game… with a twist. Use tools and equipment to identify the correct ghost type while a dangerous, violent entity hunts you down. The twist? YOU can become the ghost. Choose Ghost AI, or an asymmetrical mode where a player takes the Ghost role.

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$
Released
Price
$ · Cheap
Players
👥 Not stated
Reviews
66% of 3

Noox is a medieval fantasy ghost investigation game. Find the correct ghost type based on the clues left behind, assemble the correct runes on your trap, and capture the spirits and expand your powers.

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$$
Released
Price
$$ · Standard
Players
👥 1–4 players
Reviews
69% of 448

"Lost Lullabies - The Orphanage Chronicles" is a Co-Op horror game set in 1980, inspired by the real stories of an orphanage ruined by a fire in 1960 Lowell. Playable with 1-4 players, the goal is to identify and expel malevolent spirits alone or with your team.

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$$
Released
Price
$$ · Standard
Players
👥 Up to 8 players
Reviews
92% of 4,525

Sequel to the best-selling escape room game, brings a fresh take on first-person puzzles with a variety of new rooms to explore solo or with friends. Solve intricate puzzles, uncover hidden secrets, or craft your own escape rooms with Room Editor 2.0.

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$
Released
Price
$ · Cheap
Players
👥 1–3 players
Reviews
92% of 13

The Office Killer is a 1-3 player online co-op survival horror game. As a spy, your main goal is to complete the file transfer process containing the office's dark secrets while monitoring live surveillance camera footage. Can you survive the entire night or will you get caught by the killer?

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$
Released
Price
$ · Cheap
Players
👥 1–4 players
Reviews
33% of 6

DEVOSE is a cooperative horror game for 1 to 4 players. Explore, find proofs and survive. Every corridor is a trap. Every noise can betray you. Coordinate or die alone.

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$
Released
Price
$ · Cheap
Players
👥 1–4 players
Reviews
94% of 9,771

Species: Unknown is a 1 to 4 players co-op survival horror. Complete high-risk missions aboard an abandoned ship while being hunted by an unknown creature. Survive and upgrade your gear to face each new threat that lurks in the dark.

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Free
Released
Price
Free
Players
👥 Not stated
Reviews
95% of 98

Check the suspect's status and solve the mystery! A status-checking mystery ADV in which a rookie detective takes on difficult cases that take place in a fantasy world.

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$
Released
Price
$ · Cheap
Players
👥 Not stated
Reviews
54% of 11

Inspired by "The Russian Sleep Experiment," this co-op multiplayer horror game challenges players to collect crucial evidence from past experiments. Work together to control the gas, evade the roaming monster, and uncover the terrifying truth.

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