Online co-op Base Building games

Every online co-op Base Building game on Steam we know of, newest first. Add tags or a price band to narrow it down.

Showing 341–350 of 464 games matching Base Building · updated 12 Oct 2026

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Free
Released
Price
Free
Players
👥 Not stated
Reviews
55% of 2,417

Hey,you! This is not a place where the Beggar's can come in and beg for help! Without 100k silver coins, never think you can use our "Jianghu Inn" sign. what? Surprisingly, we managed to get together! Do you really want to give it a try?

If you loved these, you'll love this

$$
Released
Price
$$ · Standard
Players
👥 Up to 8 players

Micro Wars is a fast-paced RTS that throws you into the action in short, intense online battles featuring up to 8 players. Tailor your strategy with a variety of commanders and units, build your base, and micro your way to victory. Hone your skills with the campaign, and then climb the ladder ranks!

$$
Released
Price
$$ · Standard
Players
👥 Up to 8 players
Reviews
80% of 10,294

A survival crafting adventure set in the Fourth Age of Middle-earth. Lead the Dwarves to reclaim Moria - mine, build, and battle through procedurally generated depths alone or with up to 8 players in co-op. It is time to return to Moria!

If you loved these, you'll love this

$$
Released
Price
$$ · Standard
Players
👥 Up to 8 players
Reviews
80% of 947

Unleash voxel warfare in 9-Bit Armies: A Bit Too Far. Lead a modern military, build bases, unlock units, and attack in all-out war. Engage on land, sea and air in over two dozen missions, online skirmishes, or co-op. Easy to learn, a challenge to master.

$$
Released
Price
$$ · Standard
Players
👥 Not stated
Reviews
78% of 157

Build a formidable factory and go dungeoning alone or with friends. Solve logic puzzles and automate resource collection and crafting, or venture into dungeons filled with dangers and rewards. Find your own ideal gameplay balance, as any unique path will advance the story!

If you loved these, you'll love this

$
Released
Price
$ · Cheap
Players
👥 Not stated

Isocraft Story is an isometric Minecraft-like sandbox game. Shape the infinite and procedurally-generated block world. Collect materials, play online, advance to higher tiers of tools and weapons, go deeper into the world and build a new spaceship to escape from this planet!

If you loved these, you'll love this

$$
Released
Price
$$ · Standard
Players
👥 Not stated
Reviews
58% of 215

Experience a vast Sci-fi open-world survival TD game set on a distant planet deep in the universe. Craft, build, mine, trade, explore, and survive in this alien world. Collect Data and defend against waves of enemies seeking to banish you. Enjoy the adventure in Singleplayer or Multiplayer.

If you loved these, you'll love this

$$
Released
Price
$$ · Standard
Players
👥 Up to 4 players
Reviews
77% of 1,748

Become a Spartan in this Greek myth survival adventure, solo or with up to 3 friends. Explore a realm at the edge of the Underworld, fight mythical beasts, gather resources, craft powerful gear & build grand palaces. Raid ancient temples, seize the iconic weapons of the Olympians, and defy the gods.

If you loved these, you'll love this

$$$
Released
Price
$$$ · Expensive
Players
👥 Up to 10 players
Reviews
82% of 7,203

Battle for galactic dominance in this real-time 4X strategy game with unrivaled scale! You’ll explore, expand, exploit, and exterminate through military force, diplomacy, trade, culture, influence, and other underhanded tactics.