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 1–10 of 178 games matching Investigation · updated 12 Oct 2026

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Free
Released
Price
Free
Players
👥 Not stated

Murder Mystery games created by HIROYU through the two production circles, “TriEmoStab” and “IBAHIRO”, are now available to play on Steam. ※This is a dedicated tool for playing Murder Mystery games online.

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

Sinever: The First Seal is a 1–4 player co-op psychological horror game. Explore an isolated Victorian estate, operate paranormal equipment, manage your sanity, and uncover the truth behind its imprisoned entity before the house claims you too.

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$
Released
Price
$ · Cheap
Players
👥 Not stated

Run a co-op night shift at a roadside gas station. Fuel cars, run the register, repair vehicles, stop thieves, and investigate suspicious customers before the night gets out of control.

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$
Released
Price
$ · Cheap
Players
👥 4–15 players
Reviews
100% of 21

Social deduction game for 4 to 15 players. 3 factions clash as you fortify the village and master unique roles. Uncover your enemies before the Blood Moon turns against you, or be devoured.

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$
Released
Price
$ · Cheap
Players
👥 2–4 players
Reviews
0% of 1

Shuffle and Seek is a 2-4 player party game of memory and mischief! You split into two teams: one secretly rearranges everything in the room, and the other tries to figure out exactly what changed.

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$
Released
Price
$ · Cheap
Players
👥 2–8 players

What the Frog! Who Kicked the Can? is a 2–8 player asymmetrical hide-and-seek party game. Humans shrink to hide anywhere in the map, kick cans to create smoke screens, and rescue teammates. The Frog marks and drags targets away with its tongue, while the fight over a single can decides who wins.

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$$
Released
Price
$$ · Standard
Players
👥 Not stated
Reviews
67% of 65

Do you love ghost hunting with friends? Do you love the thrill of a crucifix burning in your hand as you exorcize ancient spirits? Do you wish you could become a ghost yourself and scare your fellow hunters? Well, then SO BELOW is for you.

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

A night survival horror where your flashlight is your best weapon. Scavenge by day, defend the beacon by night and survive 14 days — alone or with a friend in the new online co-op.

$
Released
Price
$ · Cheap
Players
👥 2–4 players

Escape a shifting maze alone or in 2–4 player online co-op. Recover real signals, avoid decoys, and repair your route out while distinct hunters close in. Answer the Barber's phone, keep the watched hunter in sight, and make it to the exit.

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