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 291–300 of 464 games matching Base Building · updated 12 Oct 2026

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Free
Released
Price
Free
Players
👥 Not stated
Reviews
73% of 23

A tactical multiplayer FPS created by a solo developer as a passion project. Featuring a fully destructible, block-based environment. Gather resources to produce weapons, ammo, and vehicles. Play multiplayer PVP/co-op or singleplayer with bots.

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Free
Released
Price
Free
Players
👥 Not stated
Reviews
65% of 184

Explore a post-apocalyptic island, craft, build, tear down enemy bases, defend and nuke your rivals! Life's about surviving in this multiplayer game, no matter what it takes!

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$$
Released
Price
$$ · Standard
Players
👥 Not stated
Reviews
26% of 209

The next major game in the Planetary Annihilation universe, Industrial Annihilation combines the iconic real-time strategy of the beloved Annihilation games with deep factory-building to deliver a blend of genres unlike any you’ve experienced before.

$
Released
Price
$ · Cheap
Players
👥 Not stated
Reviews
68% of 105

Welcome to Biztopia! A unique trading city full of business and opportunities awaits you! Start with a small delivery, build your own trading world, and team up with friends to shape the city and discover the next big venture!

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

Expand by producing and defending through tiles against other players, conquer your enemies. Use the various cards you find, each with different mechanics, on your enemies or allies, and become the victor of the battle. The battlefield awaits you.

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$$
Released
Price
$$ · Standard
Players
👥 Not stated
Reviews
75% of 28

2089 - Space Divided is a classic science fiction real-time strategy game in which you collect resources, build up your base, train troops and destroy your opponents with tactical skill.

$$
Released
Price
$$ · Standard
Players
👥 Up to 4 players
Reviews
67% of 1,908

Explore a stunning open-world filled with majestic creatures and quirky characters. Nurture the barren land into vibrant ecosystems and flex your creativity as you build a thriving civilization in balance with nature.

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$$
Released
Price
$$ · Standard
Players
👥 Up to 4 players
Reviews
76% of 13

Arcane Wilds is a western themed fantasy RTS with a unique twist on resource management. Gather, steal, and transport resources to use them in battle strategically. Embark on a new journey, survive missions, face mystical creatures in battle and loot treasures to build and upgrade your home island.

$
Released
Price
$ · Cheap
Players
👥 Not stated
Reviews
57% of 113

A blizzard brought a long winter, Humanity on the brink of extinction. you had to face ferocious beasts, mine ice and snow to build a base, and survive in the cold apocalypse.

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