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 151–160 of 464 games matching Base Building · updated 12 Oct 2026

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$$
Released
Price
$$ · Standard
Players
👥 Up to 4 players
Reviews
71% of 1,662

In this dark, open-world adventure, you awaken as a Vampire Lord. Build and customize your castle. Hunt for blood, fight, craft, and gather. Command your loyal servants. Shapeshift into a bat to explore the night and survive the relentless Inquisition, solo or in 4-player co-op.

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$$
Released
Price
$$ · Standard
Players
👥 Not stated
Reviews
22% of 81

Embark on an epic adventure to Mars in Horizon Journey, an open-world survival game that blends colonization, terraforming, and exploration in both single-player and multiplayer co-op modes. You're tasked with the monumental challenge of making Mars a new home for humanity.

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$$
Released
Price
$$ · Standard
Players
👥 Not stated
Reviews
68% of 2,728

Survive and colonize Mars alone or in online co-op. Build and upgrade your base, craft equipment, mine resources, produce water, oxygen and food, explore an open world, and repair complex machinery in a technical survival sandbox.

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$$
Released
Price
$$ · Standard
Players
👥 Up to 6 players
Reviews
88% of 197

Brave a savage, unforgiving procedurally generated world where extreme weather and the nightmares of the dark will hunt you down. Alone or in co-op, survive, build, and explore to turn a cursed hellscape into your sanctuary of light.

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Free
Released
Price
Free
Players
👥 Not stated
Reviews
85% of 305

Survive on a mysterious island after a plane crash! Solve match-3 puzzles, restore your camp, craft tools, grow crops, explore jungles and lagoons, uncover hidden treasures and reveal the island’s secrets!

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Free
Released
Price
Free
Players
👥 Not stated
Reviews
46% of 13

Welcome to MASS, a vibrant 3D avatar-based social platform and metaverse game! Create your personalized avatar, chat and make friends from around the world, play fun games together, and hang out in amazing virtual worlds.

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$$
Released
Price
$$ · Standard
Players
👥 Not stated
Reviews
72% of 58

Inspired by an existing indigenous tribe, where they live on an island called "North Sentinel Island". Native Hunter gives the player the possibility of living the experience in the body of an indigenous person completely isolated from society, just like the Sentinelese do.

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$
Released
Price
$ · Cheap
Players
👥 Not stated
Reviews
54% of 24

Become the ultimate otaku store manager in Weeb Store Simulator! Sell games, consoles, manga, and more with friends in co-op multiplayer. Start small, unlock licenses, and grow your otaku paradise. Let’s build the ultimate anime haven together!

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