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 651–660 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
−50%
$$
Released
Price
$$ · Standard · On sale −50% until 22 Oct
Players
👥 Not stated
Reviews
67% of 190

You're a nameless traveler, stranded in a ghost town in the Cursed West. Use your wits, elbow grease, and the iron on your hip. Build a homestead, work the land, and survive against unspeakable monsters in this unique Western horror survival game - alone or with friends!

If you loved these, you'll love this

The Other Side

Deck Playable
$$
Released
Price
$$ · Standard
Players
👥 1–6 players
Reviews
93% of 1,221

The Other Side is a co-op psychological thriller for up to 6 players. Your goal is to investigate haunted locations using modern ghost hunting equipment, gather evidence, identify entities, and cleanse them from the location. Customize your character, headquarters, and more.

If you loved these, you'll love this

Secret Agent Wizard Boy

✓ Deck Verified
$
Released
Price
$ · Cheap
Players
👥 Up to 4 players
Reviews
96% of 943

You’re a wizard! And a secret agent. The evil S.P.I.D.E.R crime syndicate has taken over your school, creating chaos. Play solo or up to 4 player co-op as you duel students, discover ancient secrets, and use scandalous spells.

If you loved these, you'll love this

Slime Heroes

✓ Deck Verified
$$
Released
Price
$$ · Standard
Players
👥 Up to 2 players
Reviews
67% of 31

Play as the last slime tasked with saving their home in this cute 3D action-adventure slimes-like! Customize your slime, play alone or with a friend, collect weapons and gear, battle challenging enemies and bosses, gain skills, and combine them to create your own abilities to suit your playstyle!

If you loved these, you'll love this

$
Released
Price
$ · Cheap
Players
👥 Not stated
Reviews
75% of 24

Infiltrate a secure building, cleverly bypass guards and traps, complete tasks with the help of cool spy gadgets. Play alone or with friends, upgrade your spy skills and plan excellent missions, and most importantly... Don't screw up!

If you loved these, you'll love this

Dread Tomb

Deck Playable
$
Released
Price
$ · Cheap
Players
👥 Not stated
Reviews
53% of 84

Dread Tomb is a multiplayer cooperative horror game based on Chinese folk rumors. You will face a rugged random map environment and terrain construction, adventure in various harsh random weather conditions, and discover a variety of thrilling mechanisms and mysterious monsters waiting for you.

If you loved these, you'll love this

$$
Released
Price
$$ · Standard
Players
👥 Not stated
Reviews
0% of 2

This open-world survival crafting game puts you, an amnesiac protagonist, on a journey to rediscover your true self. Explore islands and oceans, crafting weapons, watercraft, and shelters to survive. Face threats as you uncover the mysteries of your past and reclaim lost memories.

If you loved these, you'll love this

Zombocalypse

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

Dive into a top-down shooter where you’ll battle relentless waves of zombies, either solo or with friends! Face off against formidable bosses, unlock upgrades through a tech tree, and enjoy a casual gaming experience crafted with passion by an indie developer.

If you loved these, you'll love this

$
Released
Price
$ · Cheap
Players
👥 Up to 6 players
Reviews
100% of 5

In Stick Mountain, become an elite S-Co agent tasked with eliminating deadly threats across different worlds. Master elemental powers, craft powerful gear, and forge your own path to shape the fate of entire civilizations.

If you loved these, you'll love this