Online co-op Building games

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

Showing 441–450 of 577 games matching Building · updated 12 Oct 2026

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Not listed
Released
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Reviews
83% of 6

Dive into the indie MMORPG, Rebellion Against Rebellion! Embark on a magical journey in a world of enchantment, shaped by mystical crystals. Acquire magical abilities, collect characters, and pets on epic adventures! Join now for an uplifting, enchanting experience!

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$$
Released
Price
$$ · Standard
Players
👥 Up to 4 players
Reviews
79% of 10,543

A new Viking age dawns with you at its helm. Forge a thriving colony from nothing in this mythic open-world survival sim. Earn the gods' favor and survive in a land ruled by ancient terrors and unforgiving seasons. Rally unique villagers, expand your settlement and defend your tribe - solo or co-op!

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$
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Price
$ · Cheap
Players
👥 Not stated
Reviews
52% of 23

On a mission to explore a secret island discovered by the military, your plane crashes, leaving you as the sole survivor. Now, on the Island of the Condemned, your only concern is to survive and escape at any cost.

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$$ · Standard
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👥 Not stated
Reviews
76% of 317

Pilot a dwarven mech and fly a dragon as you build and defend outposts across a shattered magical realm. Craft, explore, and survive the dangers of floating islands corrupted by the Taint in this action-packed survival RPG with base-building and co-op.

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Free
Released
Price
Free
Players
👥 Not stated
Reviews
75% of 36

Dummy Guyz is a multiplayer physics sandbox with no predefined rules. Get creative by building or breaking things your way. The game is bare-bones with no theme and minimal graphics, focusing solely on physics interactions!

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$
Released
Price
$ · Cheap
Players
👥 Not stated

Experience platforming on a new level! Dive into diverse challenges from puzzles to races, crafted by players globally. Unlock your creativity with a built-in editor, craft your own stages, and share with the world. Get ready for an unforgettable gaming and creation adventure!

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$$ · Standard
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👥 Not stated
Reviews
77% of 10,400

'Night of the Dead' is an open-world game that combines elements of exploration, tower defense, survival, and crafting. Traverse a world dominated by zombies while collecting various resources and powerful equipment. Build a fortress to survive the hordes of zombies that swarm every night!

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$$ · Standard
Players
👥 Not stated
Reviews
57% of 7

Build, make money, create, repeat. Rejuvan is a game about making the most efficient factories on your own little island. Use everything you can think of to maximize profits and keep the narrative on track. Keep in mind that, at certain money thresholds, your experience may unexpectedly change.

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Free
Released
Price
Free
Players
👥 Not stated
Reviews
56% of 25

TaleSpire - Guest Edition lets you join, build, and play any TaleSpire campaign where the party has seats available. Has an ally of yours bought you a seat at the table? This is how you join them.

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