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 381–390 of 464 games matching Base Building · updated 12 Oct 2026

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Reviews
66% of 1,653

MyIsland is a relaxed and beautiful survival game,You will drift and survive on the tropical islands, hunt and travel, build houses and development farming, and create your own warm homeland.

If you loved these, you'll love this

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👥 Up to 8 players
Reviews
25% of 4

Solar Kingdoms is a real-time strategy game where you command forces across solar systems, engaging in large battles both in space and on the surfaces planets. Establish colonies, find resources and artifacts, and fight up to 8 factions in skirmish, large campaign, missions, and multiplayer.

Free
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Price
Free
Players
👥 Not stated
Reviews
51% of 268

Welcome, commander, to Project Entropy- an ultimate Sci-Fi and role-playing game with battles in space. In this immersive MMO experience, you will command alien civilizations, conquer uncharted planets, and build Hero fleets.

If you loved these, you'll love this

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78% of 288

Final Factory blends factory building, spaceship design, and a rich universe to explore. Build a mega factory and command a massive fleet against the hostile local aliens. Discover new technologies and unlock the secrets of an ancient civilization as you explore an infinite cosmos.

If you loved these, you'll love this

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👥 Not stated
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84% of 583

Compete against friends in games filled with unpredictable twists and turns. Roll the dice to gather resources and test your adaptability. Lead your kingdom to success through military power, religious knowledge, or architectural ingenuity.

If you loved these, you'll love this

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$$ · Standard
Players
👥 Up to 4 players
Reviews
79% of 964

Embark on a cozy open-world survival journey inspired by ancient China's heritage. Gather resources, cultivate crops, build your dream home, and defend it from marauders. Team up with friends to explore and uncover a world where adventure meets serenity.

If you loved these, you'll love this

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👥 Not stated
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93% of 809

Godsworn is a classic RTS with single-player & co-op focus. Experience an epic fantasy retelling of the Baltic Crusades set in a world inspired by pagan mythology. Choose a divine hero, rally worshippers alongside mythical creatures, and smite the unworthy!

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86% of 445

A 2D automation sandbox adventure. Build an automated factory with Mana-powered machines, progress through an expansive tech tree, explore a vast and wonderful world, upgrade yourself with ancient technologies, and defend it all from invasions.

If you loved these, you'll love this