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 891–900 of 1,516 games matching Action-Adventure, newest first · updated 13 Oct 2026

Filters: Action-Adventure × Clear all
Filter by tag, price, players or reviews

Project Asteroids

Deck Playable
Free
Released
Price
Free
Players
👥 Not stated
Reviews
56% of 134

In the vastness of space, you are a lone robot desperately trying to survive. Build, explore, and fight for your life as you face deadly threats in the asteroid belt. This hardcore game shows no mercy—dangers lurk at every step, ready to destroy you at any moment.

If you loved these, you'll love this

$$
Released
Price
$$ · Standard
Players
👥 Not stated

O maior desafio em the island é sobreviver. Tudo quer que você morra - seja a vida selvagem da ilha ou outros habitantes,Faça o que for preciso para sobreviver.

If you loved these, you'll love this

The Land of Magic

Crossplay
Free
Released
Price
Free
Players
👥 Not stated
Reviews
91% of 12

Are you a challenger? Master obstacles, complete worlds and set new high scores. Play new challenges every day by racing against the clock, collecting stars or crossing mysterious obstacles. Play the current season and get exclusive rewards for your ghost.

If you loved these, you'll love this

World of Solaria 2D MMORPG

Deck PlayableCrossplay
Free
Released
Price
Free
Players
👥 Not stated
Reviews
67% of 77

🏰🐉🧙‍♂️🧝Embark on an epic journey in World of Solaria, the ultimate free-to-play 2D pixel MMORPG! Join forces with players worldwide to conquer foes, master skills, and unearth hidden artifacts. Craft your destiny, engage in PvP battles, and shape Solaria's destiny in a dynamic economy.

If you loved these, you'll love this

Sherwood Extreme

Deck Playable
$
Released
Price
$ · Cheap
Players
👥 Not stated
Reviews
100% of 20

A co-op Crossbow Shooter with Bullet-Time Parkour! Race through levels and horde mode, chaining combos of slow-mo sniping and destruction to climb the leaderboards. Build maps in the Level Editor.

If you loved these, you'll love this

驱煞

Deck Playable
Free
Released
Price
Free
Players
👥 Not stated
Reviews
87% of 776

QUSHA is a Chinese-style roguelike survivor game where you take on the role of a novice Daoist disciple in a world overrun by demons. As you progress through the game, you'll master a variety of talismans and Daoist techniques, unlocking powerful spells to combat evil forces and defend the peace.

$
Released
Price
$ · Cheap
Players
👥 Not stated
Reviews
83% of 6

Play as a robot working for the "Establishment" and explore procedurally generated dungeons with your parasol, laser, and various acrobatic abilities. Work up the ranks and pass the notorious "Recruit Exam" and earn your license to explore beyond the walls of HQ into the void. Play solo or co-op.

If you loved these, you'll love this

$
Released
Price
$ · Cheap
Players
👥 1–4 players
Reviews
15% of 20

"Night City" is a cooperative first-person horror game with survival elements, here you will play as one of the company's clones, and go down into the dungeons to search for resources. Death will be waiting at every step, so work as a team.

If you loved these, you'll love this

$
Released
Price
$ · Cheap
Players
👥 Up to 5 players
Reviews
28% of 7

Dive into an adventure, alone, with your friends or play with random people. Solve various puzzles and overcome all the traps. There are currently 5 different rooms in which you can prove yourself. More and more rooms will be added in permanent updates. I hope to see you on the other side.

If you loved these, you'll love this