Online co-op Action-Adventure games

Every online co-op Action-Adventure game on Steam we know of. Add tags, a price band or a review floor to narrow it down.

Showing 571–580 of 1,516 games matching Action-Adventure, newest first · updated 13 Oct 2026

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$
Released
Price
$ · Cheap
Players
👥 Up to 4 players

Explore a dark, dangerous scientific facility with three friends… or enemies. What Lurks Inside is a co-op (or singleplayer) horror game with strategic, roleplaying, and survival elements. Will you escape the laboratory with your teammates, or slay your friends as the monster?

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

Blast through an intense top-down zombie survival experience. Scavenge, craft, build, and fight endless hordes of the undead. With heroism, deep progression, and dynamic combat, carve your story in a brutal post-apocalypse. Forge alliances or stand alone—how long can you outlast the rising terror?

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Free
Released
Price
Free
Players
👥 Up to 6 players
Reviews
41% of 1,084

Relive an iconic tale with Blade & Soul NEO. Fully remastered where players reconnect with the original spirit of the free-to-play, open-world MMORPG. Experience a richer visually enhanced experience set in a world of Wuxia mythology where fast-paced combat collides with the stunning visual beauty.

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Deadly Quiet

Deck Playable
$
Released
Price
$ · Cheap
Players
👥 Up to 4 players
Reviews
55% of 89

Deadly Quiet is a 4-player co-op asymmetrical horror game set in the eerie Hoia Baciu forest. Featuring a bodycam perspective, your fate depends on your actions and the cooperation of your entire team. But remember to STAY QUIET.

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

Step into the dangerous world of Project0. Your mission is straightforward, follow The Agency's orders and then escape in one piece. Whether you prefer solo play or a cooperative mode for up to 4 players, our semi-procedurally generated world ensures each gameplay is a unique experience.

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Paranormal Cleanup

Deck Playable
$
Released
Price
$ · Cheap
Players
👥 1–4 players
Reviews
88% of 987

Clock in for the worst cleaning shift of your life: Unclog nasty toilets and scrub ectoplasm in this 1-4 player online co-op survival horror game. Get the job done and don't get caught by the entities hunting you!

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$
Released
Price
$ · Cheap
Players
👥 1–6 players
Reviews
69% of 55

ANOMALY LOOP ADVENTURE Play solo or with up to 6 players. Spot anomalies, solve puzzles, and escape the loop. Will you reach Room 9 or stay trapped forever?

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The Break-In

Deck Playable
$$
Released
Price
$$ · Standard
Players
👥 1–4 players
Reviews
87% of 2,045

Steal everything. Even the people. The Break-In lets you take whatever you want, from TVs to fridges to toilets. And all in 1-4 player co-op, VR and non VR. Select your getaway vehicle, anything from a bicycle to a stolen police van, and load up with gear like hammers and rocket boosters, and steal.

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$
Released
Price
$ · Cheap
Players
👥 Not stated
Reviews
50% of 2

Castle of Mist is a first-person shooter with Roguelike random elements set in a medieval-style adventure. Players control different characters, choose various items to create unique playstyles, and ultimately defeat various monsters and the dragon attacking the castle to achieve victory.

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$
Released
Price
$ · Cheap
Players
👥 1–4 players
Reviews
42% of 7

Demonk is a cooperative game for 1 to 4 players. You play as monks who must negotiate or banish evil spirits. Spirits and their banishment are based on ancient Slavic myths. For banishment or a pact with a spirit you will receive money.

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