Online co-op Detective games

Every online co-op Detective game on Steam we know of, newest first. Add tags or a price band to narrow it down.

Showing 1–10 of 136 games matching Detective · updated 12 Oct 2026

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$
Released
Price
$ · Cheap
Players
👥 Not stated

🐱 Discover 500 hidden cats across 5 artistic hand-drawn scenes 🖌️. Relax with color-by-numbers 🎨 and add life to every detail. Play solo or in cozy co-op 👯‍♂️, while Meow FM 🎶 sets the perfect creative mood.

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Released
Price
$ · Cheap
Players
👥 Not stated

Traitor is a multiplayer social thriller based on suspicion and strategy. Players assume roles, gain trust, cooperate... until someone betrays them. In each round, one is the secret killer and the others try to survive. Observe, interrogate, gather evidence and uncover the real killer.

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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
👥 Up to 6 players

Plates of Peril is a chaotic cannibalistic restaurant-management game. Play solo or team up with up to 5 friends as you harvest limbs, prepare dishes, and screen guests for undercover cops to become the ultimate 5-star chef.

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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
👥 Not stated
Reviews
53% of 247

Play as Agent Eva to follow the trail, or as Analyst Miles to manage the operation. Dual Protocol is an asymmetric noir puzzle game where two players progress only through conversation. Without seeing each other’s screens, combine the data you have and uncover the truth behind the Castellari murder.

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$
Released
Price
$ · Cheap
Players
👥 Up to 4 players
Reviews
91% of 24

A 2D pixel-art ghost hunting horror game, solo or in online co-op for up to 4 players. As a hunter for a mysterious corporation, you collect and analyze cursed artifacts to identify the ghost before its anger turns into a deadly hunt.

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$
Released
Price
$ · Cheap
Players
👥 Not stated
Reviews
74% of 706

这是一款双人合作类的互动影游。两位玩家分别扮演「秘密特工」与「商界之女」,经历一场充满挑战与救赎的冒险。1941年的上海孤岛,金融界的血案,各怀鬼胎的多方势力。你们的选择将共同影响故事走向,一起开启专属你们的乱世迷局。

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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
👥 Not stated

Pixel Bid King is a fair multiplayer auction strategy game built on shared rules. Pair distinct character skills with varied tool effects to reveal clues or reshape play. Read rival bids, negotiate, trade, or cut your losses. No strategy always wins; judgment and risk management decide the match.

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