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 731–740 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
75% of 8

The dead don’t rest, and neither can you. In Necrotide, every wave grows stronger, quick reflexes and smart upgrades are your only hope. Survive the hordes, stock up between rounds, and confront the ultimate boss.

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ENDALOR

Deck Playable
−30%
$$
Released
Price
$$ · Standard · On sale −30% until 19 Oct
Players
👥 1–4 players
Reviews
70% of 262

An immersive medieval dark fantasy survival game with RPG elements for 1-4 players. Set in a hand crafted open world. Explore, survive, build, craft, fight and conquer your way through the dark, brutal and mysterious lands.

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$
Released
Price
$ · Cheap
Players
👥 Not stated
Reviews
52% of 25

Lead your nation in Territorial Conquest through the Middle Ages, WWII, and Modern Era. Expand borders, build armies, trade, sabotage enemies, make political decisions, and conquer the world in immersive real-time strategy.

If you loved these, you'll love this

Free
Released
Price
Free
Players
👥 Up to 8 players
Reviews
92% of 13

This game offers a first-person platforming experience for up to 8 players. After a mutated rabies virus began to threaten life on Earth, humanity found refuge in safe cities built in the sky. Overcome obstacles to reach the safe city — and be the first to get there.

If you loved these, you'll love this

Free
Released
Price
Free
Players
👥 Not stated
Reviews
83% of 36

Glocktopus is a free-to-play 3D comedy puzzle game where you control an armed octopus, using your trusty sidearm, aquatic gadgets, and clever environmental interactions to overcome comedic challenges and escape the aquarium in pursuit of the local mafia’s Golden Gun.

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

Command massive armies from the sky as an RTS Commander, or drop directly into the muddy trenches as a Front Line soldier. Industrial Legion blends tactical squad management with intense first-person combat, simulating thousands of active troops simultaneously in a unified theatre of war.

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$
Released
Price
$ · Cheap
Players
👥 1–4 players
Reviews
0% of 2

A terrifying 1-4 player co-op horror game. Explore 10+ handcrafted Backrooms maps, survive against 8+ unique entities, and use proximity voice chat to coordinate or panic. Your decisions shape the story with multiple endings. Discover optional lore that reveals the truth behind these Backrooms.

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