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 171–180 of 464 games matching Base Building · updated 12 Oct 2026

Filters: Base Building × Clear all
$$
Released
Price
$$ · Standard
Players
👥 Up to 4 players
Reviews
73% of 8,760

Become a crew member of an Interdimensional Express Train! Discover a new world full of mysterious creatures, enemies and places. Upgrade and customize your train, gather new materials and build better weapons. Play solo or online сo-op with up to 4 people.

If you loved these, you'll love this

$$
Released
Price
$$ · Standard
Players
👥 1–4 players
Reviews
46% of 13

Retail Simulator is a 1-4 Co-op game where you build your dream store from scratch in this immersive retail experience. Design the layout with our custom build mode, stock shelves, order inventory. Customize your store's look to attract customers. Choose your scale, from local shop to mega-store.

If you loved these, you'll love this

$
Released
Price
$ · Cheap
Players
👥 4–100 players
Reviews
12% of 47

Remain is an MMO game. Within this open world, you can tame "zombies", making them your labor force, or commanding them to fight your foes. Apart from zombies, you will still have to face the survival challenges of food and water. Remaining warriors, don't let your guard down, and keep surviving...

If you loved these, you'll love this

Free
Released
Price
Free
Players
👥 Up to 3 players
Reviews
85% of 7

Welcome to the FreakShow! A twisted mix of FPS and tower defense set in the aftermath of an apocalypse where post-modern gladiatorial combat, an ever-changing arena, and your own zombies all meet in a chaotic team vs team showdown! Will you survive the arena?

If you loved these, you'll love this

$$
Released
Price
$$ · Standard
Players
👥 Not stated
Reviews
66% of 9,537

The Front is a survival open-world crafting sandbox game. You are a resistance fighter sent back in time to stop the rise of a tyrannical empire. Collect resources, craft tech, build shelters, and fight monsters to accomplish your mission.

If you loved these, you'll love this

$
Released
Price
$ · Cheap
Players
👥 Not stated
Reviews
100% of 2

Stranded on a deserted island, survive alone or invite your friends in co-op multiplayer! Explore an infinite procedural open world, gather natural resources, master node-based crafting, and construct bases with real physics in IslaNode Rescue Signal.

If you loved these, you'll love this

$$
Released
Price
$$ · Standard
Players
👥 Not stated
Reviews
100% of 5

Set in a world seized by machines, Mordfield Command is a turn-based hex wargame. Reclaim territory under mounting pressure and expand your control of the battlefield. Move too slowly, and the Algorithm’s growing forces will overrun you.