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 3211–3220 of 3,528 games matching Indie, newest first · updated 13 Oct 2026

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Castle Story

Deck PlayableCrossplay
$
Released
Price
$ · Cheap
Players
👥 Not stated
Reviews
67% of 9,283

Castle Story is a creative voxel-based strategy game in which you can build castles one brick at a time using an army of little creatures called Bricktrons. Design and build your own castles, expand your territory in a vast landscape and defend your Bricktrons against onslaughts of hostile creatures.

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20XX

Deck Playable
$$
Released
Price
$$ · Standard
Players
👥 1–2 players
Reviews
91% of 3,985

20XX is a roguelike action platformer that you can play with a friend. Jump and shoot your way through ever-changing levels, collect awesome new powers, and battle mighty bosses in the name of saving the human race maybe!

If you loved these, you'll love this

$
Released
Price
$ · Cheap
Players
👥 Up to 2 players
Reviews
82% of 17

Customize your units as they level up according to your needs. Suppress, scare and surround your enemy. Use terrain to your advantage. Exploit their weaknesses. Diminish your foes and bring dominance to the battlefield!

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$
Released
Price
$ · Cheap
Players
👥 Not stated
Reviews
26% of 15

Bug Killers – is a dynamic Top Down shooter where you will need to turn crowds of bugs-mutants into meat. The game has three modes: Survival, PvP and PvE. Different types of armament will help you to effectively destroy the enemies.

If you loved these, you'll love this

$
Released
Price
$ · Cheap
Players
👥 Not stated

Abstract Arena is a top-down action-shooter game set in a completely abstract context. Up to 6 different ships can clash in the Arena, taking advantage of all of the unique and balanced skills each of them possesses. Fast, precise, powerful: the gameplay is easy to learn but hard to master, adaptable to many play styles thanks to the variety of situations the player is brought to encounter.

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