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 3061–3070 of 3,535 games matching Indie, newest first · updated 14 Oct 2026

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Zero-K

Crossplay
Free
Released
Price
Free
Players
👥 Not stated
Reviews
93% of 4,409

With 100+ truly unique units, Zero-K is an RTS of freedom and creativity, tempered by a decade of refinement. Sculpt land into a castle and throw invaders off it with a Jugglenaut. Explore a massive campaign, solo or co-op. Hop online for epic 32 player battles or fast paced 1v1, on 100s of maps.

Call to Arms

Deck Playable
$$
Released
Price
$$ · Standard
Players
👥 Not stated
Reviews
80% of 17,465

Call to Arms offers an innovative mix of real-time strategy and 3rd, as well as 1st person controls. Set in the time of modern warfare, the game offers realistically modeled vehicles and heavy weaponry. Command your troops to victory or fight by yourself in the 3rd or 1st person action mode.

If you loved these, you'll love this

$$
Released
Price
$$ · Standard
Players
👥 Not stated
Reviews
66% of 12

Cube Universe is a first-person voxel RPG. Visit many different, procedurally generated planets. Team up with your friends to fight against fierce enemies in dungeons. Do quests to save the world from the forces of evil - or throw it into chaos.

If you loved these, you'll love this

For The King

Deck Playable
$$
Released
Price
$$ · Standard
Players
👥 Not stated
Reviews
87% of 31,099

For The King is a strategic RPG that blends tabletop and roguelike elements in a challenging adventure that spans the realms. Set off on a single player experience or play cooperatively both online and locally.

If you loved these, you'll love this

$
Released
Price
$ · Cheap
Players
👥 Not stated
Reviews
53% of 15

Techwars Deathmatch is a top-down PVP action game with battle mechs. The game has an advanced system for destroying mechs and buildings. Pick a side and destroy the enemy in Siberia, Kazakhstan, Sochi and Alaska!

If you loved these, you'll love this

The Wastes

Crossplay
$
Released
Price
$ · Cheap
Players
👥 Not stated
Reviews
85% of 34

Enter The Wasteland. Return to fight for survival in this fast-paced, throwback first-person shooter set in a post-apocalyptic world full of action, violence and cars. Play/create single-player or cooperative scenarios, or play a classic array of multiplayer modes.