Online co-op Action-Adventure games

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

Showing 111–120 of 1,095 games matching Action-Adventure · updated 12 Oct 2026

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$
Released
Price
$ · Cheap
Players
👥 Up to 2 players
Reviews
85% of 7

Gold Up is a challenging 2-player co-op climbing game built around physics, timing, and teamwork. Throw the treasure to your partner, climb ahead, switch roles, and reach the surface. It takes practice to master, but every run helps you improve together.

If you loved these, you'll love this

$
Released
Price
$ · Cheap
Players
👥 2–4 players

Remember Block Catching? Your nostalgic childhood game of tag, now a handdrawn multiplayer horror for 2-4 players. Team up with friends, run, hide, and survive in this horror twist on a classic Singaporean game.

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$
Released
Price
$ · Cheap
Players
👥 Not stated
Reviews
100% of 5

Try to survive a twisted TV show where you collect treasures, steal from other contestants, and deposit your loot before monsters or rivals take you down. Only the richest slime lives to see another day.

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$$
Released
Price
$$ · Standard
Players
👥 Not stated
Reviews
73% of 355

Luminary is a solo or co-op OpenZone Action RPG that creates a balanced experience for everyone. Using a unique world and character progression system, explore vast hand-crafted lands together, uncover hidden treasures, level up your town, and push back the darkness with light.

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$$
Released
Price
$$ · Standard
Players
👥 Not stated
Reviews
80% of 5

Early 2000's inspired 1st/3rd-person shooter, with vehicles, ships, jet packs, multiple foot‑soldier classes, space battles, and so much more. The game features a Single-player campaign with several uniquely designed missions, and multiple Multiplayer modes such as Conquest, FreeForAll, and Escape.

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$$
Released
Price
$$ · Standard
Players
👥 Up to 8 players
Reviews
86% of 902

A retro spy FPS inspired by the N64 era. Go guns-blazing in action-packed shootouts, steal secret plans, and accomplish objectives while foiling evildoers’ schemes as a secret agent in a solo or co-op campaign. Fight friends in both local split-screen multiplayer and online with up to 8 opponents.

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$
Released
Price
$ · Cheap
Players
👥 1–4 players

Survivors-like game with ONLINE CO-OP (1–4 PLAYERS). The man who had always played by the rules was dead.! Mafia Hero: Streets of Survival is an online co-op auto-shooter roguelite for up to 4 players. Build your criminal empire, craft powerful builds, and battle massive bosses.

If you loved these, you'll love this

$
Released
Price
$ · Cheap
Players
👥 Not stated
Reviews
100% of 5

The Frog Prince is a physics-based climbing party game where every jump can save your run—or ruin it. Charge your leaps, survive slippery platforms, and use your tongue to rescue friends, betray rivals, and race toward a randomly generated princess at the summit.

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$
Released
Price
$ · Cheap
Players
👥 Up to 2 players
Reviews
74% of 31

A short, hilariously unfair, two-player obstacle course that'll more than answer the question: "Would I lose my sanity if I were trapped in a hamster ball with this person and had to climb a stupid hazard filled mountain to get out?"

If you loved these, you'll love this

$
Released
Price
$ · Cheap
Players
👥 Not stated

A co-op horror game where you manipulate your own gravity to traverse a procedurally generated 3D maze filled with supernatural threats. Work alone or with your team to rescue the Inverted.

If you loved these, you'll love this