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 31–40 of 577 games matching Building · updated 12 Oct 2026

Filters: Building × Clear all
$
Released
Price
$ · Cheap
Players
👥 Up to 2 players
Reviews
100% of 1

A first-person voxel roguelite shooter. Descend, craft and temper your own guns, exploit ammo chemistry, fight unique enemies and face the bosses guarding every way down. Online co-op and local splitscreen.

If you loved these, you'll love this

$$
Released
Price
$$ · Standard
Players
👥 Not stated
Reviews
87% of 2,687

Start small, team up with friends, and automate production with conveyor belts, pipes, and magical devices. Stock your shop with potions, jewelry, and relics, complete commissions, and build an alchemy empire! Alchemy Factory 1.0 is out now with the Wagon Logistics System and revamped shopkeeping.

If you loved these, you'll love this

Free
Released
Price
Free
Players
👥 Not stated
Reviews
100% of 3

Mahjong solitaire meets a casual city builder story game in Ancient Rome. Build the city to restore it to glory. Solve tile-matching mahjong solitaire puzzles, unlock game-enhancing boosts, and tackle historical Roman city-building tasks for relaxing exploration and adventure in Emperor of Mahjong®.

If you loved these, you'll love this

Free
Released
Price
Free
Players
👥 Up to 2 players
Reviews
100% of 3

In Pile Up - a cozy, object stacking puzzle game with playful physics - every object matters. Work together with a friend, plan each move carefully, enchant objects with unique traits, and master balance and strategy to build the tallest pile imaginable!

If you loved these, you'll love this

$
Released
Price
$ · Cheap
Players
👥 Up to 4 players
Reviews
100% of 1

Build, manage, and expand your own retail store in this relaxing first-person simulation. Stock shelves, set prices, serve customers, and grow your business solo or with up to 4 players in online co-op.

If you loved these, you'll love this

$
Released
Price
$ · Cheap
Players
👥 Not stated
Reviews
69% of 43

Sigma World Online - is an online sandbox with a huge world from many star systems. Choose who to be: space explorer, miner, merchant, farmer, culinary specialist, scientist, builder or hunter, or build your empire.

If you loved these, you'll love this

$
Released
Price
$ · Cheap
Players
👥 Up to 5 players
Reviews
85% of 28

Build a supermarket empire solo or with up to 4 friends. Stock the shelves, set your own prices, work the register by hand, chase down shoplifters and hire a crew — and grow one empty room into the busiest store in town.

If you loved these, you'll love this

$
Released
Price
$ · Cheap
Players
👥 Not stated
Reviews
61% of 152

Fight what should never wake. Deliria is an infinite multiplayer sandbox with no cubes and no grid: carve the world smooth, build a town people actually move into, and hold it against blood moons, invasions and nine Lovecraftian gods.

If you loved these, you'll love this