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 2021–2030 of 3,555 games matching Indie, newest first · updated 16 Oct 2026

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NRG

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

Feel like your life is going in circles? Let's go in circles together! Collect, shoot and taunt your way to victory against your opponents or join them to fight zombie robots for the top of the leaderboard. Then use your winnings to customize!

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$
Released
Price
$ · Cheap
Players
👥 Up to 4 players
Reviews
38% of 60

UnderBackrooms is a cooperative horror game set in a mysterious parallel universe of empty rooms and endless corridors. With moments of tension and surprise, players must be on guard to survive. Explore the backrooms and uncover their secrets to escape this nightmare world.

If you loved these, you'll love this

$
Released
Price
$ · Cheap
Players
👥 Not stated
Reviews
100% of 1

Stream Runners: Heroes is a retro style idle game for live streamers to play with their viewers on Twitch. Players can add Runners to the game to fight enemies, earn points, and defeat bosses. There are many ways to use this game with your community, it's all up to you and your chat!

PERISH

✓ Deck Verified
$$
Released
Price
$$ · Standard
Players
👥 1–4 players
Reviews
68% of 364

PERISH is a stylish 1-4 player FPS with a cross to bear. Slay hordes of creatures on the black sands of Purgatory and sell their gold-stained corpses to craven priests. Kill magnificent bosses and use the proceeds to gain entrance to Elysium, a place of cosmic revelations.

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Spellmasons

Deck PlayableCrossplay
$$
Released
Price
$$ · Standard
Players
👥 Up to 13 players
Reviews
91% of 1,136

Spellmasons is a magical, tactical roguelike where you customize your spells. Play solo or team up with your friends in online multiplayer, and explore a deep magic system where clever combinations yield powerfully satisfying results!

If you loved these, you'll love this

Free
Released
Price
Free
Players
👥 1–16 players
Reviews
54% of 24

1-16 Player COMBAT ZONE & 1-4 Player COOP Zombie Wave Survival in Comic style. Singleplayer and Multiplayer Playthrough. Get ready for GUNWATCH: Conflict Survival!

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