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 1401–1410 of 1,516 games matching Action-Adventure, newest first · updated 13 Oct 2026

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Journey To The Savage Planet

✓ Deck Verified
$$
Released
Price
$$ · Standard
Players
👥 Up to 2 players
Reviews
87% of 5,678

"WELCOME TO THE PIONEER PROGRAM! As the newest recruit of Kindred Aerospace - The 4th best interstellar space exploration company - Your job is to determine if the planet ARY-26 planet is fit for humans. You may be short on equipment and experience, but you'll figure it out. Good luck!

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$
Released
Price
$ · Cheap
Players
👥 Not stated
Reviews
69% of 63

Under Lock is a multiplayer asymmetrical PvP horror game for 5 players (4 survivors versus 1 monster). Take the role of a survivor with the goal to outsmart the monster and escape from lockdown. Or choose one from several unique monsters to hunt down and devour the victims.

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Free
Released
Price
Free
Players
👥 Not stated
Reviews
64% of 3,540

In the midst of a site-wide containment breach, you must team up with other Class-D personnel to escape the underground, isolated facility while evading the dangerous anomalies that have breached containment.

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RUSSIAPHOBIA

Crossplay
−51%
$
Released
Price
$ · Cheap · On sale −51% until 23 Oct
Players
👥 Not stated
Reviews
69% of 5,590

Immerse yourself in the Russian Realities as Foreign Agents and help the Presidents Make Russia Great Again! Cooperative Multiplayer, World Government, Evil Russians and more! Russia is Waiting for You!

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$
Released
Price
$ · Cheap
Players
👥 1–4 players
Reviews
61% of 34

Not Deat Yet is a 1-4 player co-op, fast-paced, rogue-lite FPS, with elements of deck-building and strategy that will test your skills in creating your own build while having to manage your resources and survive restless waves of zombies.

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$
Released
Price
$ · Cheap
Players
👥 1–7 players
Reviews
100% of 3

Matt's Project Zombies: Endless is a Wave Based Survival Shooter Created by Matt Sowards. Fight through Hordes of the Undead with up to 6 friends or Alone! There is a Wide Range of weapons from easy to harder Difficulties to master. Unique Locations, Original Soundtrack, Missions, Secrets & More!

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