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 111–120 of 464 games matching Base Building · updated 12 Oct 2026

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Released
Price
$$ · Standard
Players
👥 Up to 8 players
Reviews
100% of 2

A hardcore pirate survival game set during the Golden Age of Piracy. Stranded on a hostile island after a mutiny, you must scavenge, hunt, craft, and survive against pirates, wildlife, and dwindling resources.

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$$
Released
Price
$$ · Standard
Players
👥 Up to 5 players
Reviews
84% of 84

Your home is a living beast. Explore a handcrafted open world in an action RPG where you fight with magic, gather resources, find loot, craft, and grow stronger. Customize and expand your home on its back, and take it with you as you explore solo or with friends.

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$$
Released
Price
$$ · Standard
Players
👥 Up to 4 players
Reviews
73% of 1,838

Explore a colorful world and build your own cozy home on wheels. Craft workstations, and source energy from the sun, wind, or water. Upgrade and customize your vehicle, grow crops, and live sustainably off-grid with up to 4 players.

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$$
Released
Price
$$ · Standard
Players
👥 Not stated
Reviews
100% of 1

SurrounDead Poly Construction is an open-world survival adventure game where players will solve puzzles, collect items, and defeat all enemies to reach the end.

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$
Released
Price
$ · Cheap
Players
👥 Not stated

Our Last Stand is a tower defence game that allows you to command a powerful mech and defend against relentless waves of enemies. Play on different worlds to gather resources, unlock advanced technology, and level your commander to gain powerful new abilities. Build defend, survive.

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Released
Price
$$ · Standard
Players
👥 Not stated
Reviews
84% of 2,541

Eden Crafters is a solo or co-op open-world survival, crafting, and factory-building game where you transform a hostile planet into a habitable haven for humanity. Build, automate, and terraform. Control the climate, create a breathable atmosphere, and turn toxic lakes into water: shape a new world!

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$$
Released
Price
$$ · Standard
Players
👥 Up to 4 players
Reviews
83% of 833

Take the helm as a new Station Commander and exploit an alien star system in this stunning space-station factory automation game. Amass resources and construct starships using increasingly advanced manufacturing and expand your station in a hostile universe.

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$$
Released
Price
$$ · Standard
Players
👥 Up to 16 players
Reviews
93% of 214

Build your base, prepare your troops, and face your most epic battle yet in this old-school real-time strategy game. Choose between two factions, test your skills in three epic campaigns and engage in online battles with up to 16 players simultaneously.