Online co-op Indie games

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

Showing 3421–3430 of 3,528 games matching Indie, newest first · updated 13 Oct 2026

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Free
Released
Price
Free
Players
👥 Up to 5 players
Reviews
71% of 310

Immortal Empire is a multiplayer tactics role playing game. Control a party of up to 5 immortals as you travel through a unique fantasy world, using spells and strategy to defeat your enemies. Play co-op, versus, or solo through a compelling campaign storyline with fully voiced characters.

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FortressCraft Evolved!

Deck PlayableCrossplay
$$
Released
Price
$$ · Standard
Players
👥 Not stated
Reviews
72% of 2,651

FortressCraft Evolved is a unique blend of Voxel Landscapes, Tower Defense, Crafting, Logistics, Exploration, Combat and Assembly lines. Players begin by crash-landing on a strange alien world, left with only a small handful of starting machines. Using hand-held scanners they must locate ore resources, place down Ore Extractors and Conveyors to automate the raw material back to the Smelter; take the fresh ingots through multi-machine assembly lines, followed by researching new technologies that help them explore thousands of meters below the planet's surface.

If you loved these, you'll love this

−90%
$$
Released
Price
$$ · Standard · On sale −90% until 19 Oct
Players
👥 Not stated
Reviews
66% of 225

Have you ever faced your worst nightmare? What if you have no choice but to move on and see what’s behind it? Then you’d better arm yourself with a couple of big guns, stock up on ammo and show them all what a real nightmare is!

If you loved these, you'll love this

Viscera Cleanup Detail

Deck Playable
$$
Released
Price
$$ · Standard
Players
👥 Not stated
Reviews
92% of 18,090

In Viscera Cleanup Detail, you step into the boots of a space-station janitor tasked with cleaning up after various horrific sci-fi horror events. Instead of machineguns and plasma-rifles, your tools are a mop and bucket. That hero left a mess, and it's up to you to deal with the aftermath.

If you loved these, you'll love this

−90%
$$
Released
Price
$$ · Standard · On sale −90% until 26 Oct
Players
👥 Up to 4 players
Reviews
81% of 13,659

Vermintide is an epic co-operative action combat adventure set in the End Times of the iconic Warhammer Fantasy world.

If you loved these, you'll love this

Broforce

Deck Playable
$$
Released
Price
$$ · Standard
Players
👥 Up to 4 players
Reviews
96% of 49,560

Broforce is an action-packed side-scrolling run ‘n’ gun ode to freedom, putting you in control of an under-funded, overpowered paramilitary organization dealing exclusively in excessive force.

If you loved these, you'll love this

Rampage Knights

Deck PlayableCrossplay
$$
Released
Price
$$ · Standard
Players
👥 Up to 2 players
Reviews
93% of 2,181

Rampage Knights is a cooperative beat 'em up game mixed up with randomized dungeon crawling and exploration, which you can play alone or with a friend online.

If you loved these, you'll love this

$$
Released
Price
$$ · Standard
Players
👥 Not stated
Reviews
65% of 2,481

Act of Aggression – Reboot Edition brings the techno-thriller RTS game Act of Aggression to a higher level. The Reboot Edition offers a full gameplay overhaul in skirmish mode against the AI and in your multiplayer battles.