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 2401–2410 of 3,543 games matching Indie, newest first · updated 15 Oct 2026

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Tree Simulator 2022

✓ Deck Verified
$
Released
Price
$ · Cheap
Players
👥 Up to 100 players
Reviews
96% of 1,025

It's exactly what it sounds like, but now with 100% more multiplayer. You are the tree and so is everyone else! You are equaled by no other, except maybe the forest... Relax and be the best tree you can be.

If you loved these, you'll love this

TaleSpire

Deck Playable
$$
Released
Price
$$ · Standard
Players
👥 Not stated
Reviews
89% of 4,404

TaleSpire is a beautiful way to play pen and paper RPGs online. Bring your stories to life and embark upon campaigns together with your friends, regardless of where you are in the world.

$$
Released
Price
$$ · Standard
Players
👥 Up to 6 players
Reviews
75% of 594

Become a real medieval feudal lord: start with a small village and build it up into an enormous impenetrable castle. You will have to repel enemy raids: hide behind thick walls, lure your enemies into strategically placed traps, and even lead your loyal peasants into battle.

If you loved these, you'll love this

$$
Released
Price
$$ · Standard
Players
👥 Up to 8 players
Reviews
90% of 2,850

Element TD 2 sees you combine powerful elements to create unique towers. Prove your defenses against challenging foes, and compete or cooperate with others to determine who has mastered the elements.

If you loved these, you'll love this

Shoot 'm Up

Crossplay
$
Released
Price
$ · Cheap
Players
👥 Not stated
Reviews
50% of 2

Tactical multiplayer chaos. That's what would describe this game in 3 words. It's fast, it's messy, it's challenging. Do you like blowing up zombies to bits together with your friends? Protecting your base from the enemy team? Grab your gear and start the chaos!

OpenTTD

Deck PlayableCrossplay
−45%
$
Released
Price
$ · Cheap · On sale −45% until 23 Oct
Players
👥 Not stated
Reviews
89% of 28

OpenTTD is a business simulation game in which players earn money by transporting passengers and cargo via road, rail, water, and air. It is an open-source remake and expansion of the 1995 Chris Sawyer video game Transport Tycoon Deluxe.

If you loved these, you'll love this

$$
Released
Price
$$ · Standard
Players
👥 Not stated
Reviews
52% of 19

The Rebellion is a brand new take on real-time strategy enabling you to seamlessly transition into 3rd person to join your warriors in battle. Build your village, equip each unit with powerful weapons and armor, and secure absolute victory for your faction!