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 151–160 of 352 games matching Mystery · updated 12 Oct 2026

Filters: Mystery × Clear all
$
Released
Price
$ · Cheap
Players
👥 1–6 players
Reviews
65% of 32

A heart-pounding 1-4 player co-op horror experience. Step into a forsaken orphanage to banish the legendary Child Eater. Work together to find clues, complete the ritual, and survive relentless demonic attacks. Trust your team, watch your back, and whatever you do—don't get caught!

If you loved these, you'll love this

$
Released
Price
$ · Cheap
Players
👥 Up to 4 players
Reviews
84% of 51

The ghosts are you. Trapped in a haunted arcade machine with up to 3 friends, you scavenge pellets to keep the safe room alive - while the thing that eats hunts you through the maze. Survive the night, uncover the machine's secrets, and escape.

If you loved these, you'll love this

$
Released
Price
$ · Cheap
Players
👥 1–4 players
Reviews
87% of 147

Challenging co-op horror (1-4 players). You are looking for your missing friend Darvin. Do whatever it takes to stay alive. Only the patient and the clever will succeed.

If you loved these, you'll love this

$
Released
Price
$ · Cheap
Players
👥 1–4 players
Reviews
66% of 3

A 4 player co-op horror game about a spooky slumber party, where you and three friends are pulled into shared nightmares, each one a new level to survive. Work together to complete objectives and make it through the night.

If you loved these, you'll love this

$$
Released
Price
$$ · 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.

If you loved these, you'll love this

$
Released
Price
$ · Cheap
Players
👥 Up to 4 players
Reviews
100% of 1

Landing on planet Kepler-11e, You and up to 3 other players are tasked with preventing this previously abandoned planet from complete destruction as rogue AI mysteriously activate. Upgrade weapons and eliminate any aliens in your way in this realistic, first-person, sci-fi experience.

If you loved these, you'll love this

$
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.

If you loved these, you'll love this

Free
Released
Price
Free
Players
👥 Up to 2 players
Reviews
72% of 222

Dive into an immersive co-op horror experience with a friend. As detectives, you’ll search for clues in a sinister area and must survive the horrors lurking within. Work together to find all the objects and escape before doom catches up with you.

If you loved these, you'll love this

$
Released
Price
$ · Cheap
Players
👥 Up to 4 players
Reviews
50% of 2

An online cooperative game for up to 4 players, combining horror and entertainment. Clean laboratories filled with traps and dangerous creatures to earn money and make your cleaning agency profitable.

If you loved these, you'll love this

$$
Released
Price
$$ · 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.

If you loved these, you'll love this