Online co-op Underground games

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

Showing 21–30 of 47 games matching Underground · updated 12 Oct 2026

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$
Released
Price
$ · Cheap
Players
👥 Up to 4 players
Reviews
45% of 24

Start digging with your grandpa’s map! In this stylized co-op digging game (up to 4 players), dig, upgrade, and reach the treasure together. Work as a team or compete! Fun, chaos, and rivalry await deep underground.

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$
Released
Price
$ · Cheap
Players
👥 2–8 players
Reviews
90% of 11

Dig, fight, and sabotage your way to victory in a fast-paced multiplayer party brawler! Battle other moles in wild, random caves, build your loadout, and deposit your minerals to win.

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$
Released
Price
$ · Cheap
Players
👥 Up to 4 players
Reviews
31% of 22

The Backrooms: Rescue Expedition is a realistic first-person horror game up to 4 players. You and your team are tasked with saving the lives of the missing expedition unit, Echo-7 North. Ruthless entities and the madness of infinite halls create an atmosphere of relentless terror.

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Free
Released
Price
Free
Players
👥 Not stated
Reviews
81% of 11

Purchase persistent land quadrants, build RTS-commanded drone bases, extract resources, and defend against trespassers in this PvEvP extraction sandbox. Upgrade through Ownership to Legacy, automate mining fleets, and grow your empire across the Americas. Your land, your legacy.

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$
Released
Price
$ · Cheap
Players
👥 Up to 2 players
Reviews
47% of 117

Stretcher Together is a cooperative 3D platformer for two players. You play as medics rescuing a patient after a fall. Jump, balance, and climb your way up—but don’t drop the patient, or you’ll have to go back down to retrieve them!

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$$
Released
Price
$$ · Standard
Players
👥 Not stated
Reviews
27% of 11

A puzzle game powered by two: Navigate a mysterious facility to charge devices, solve puzzles, and reconfigure the map as you see fit. Uncover the secrets of the facility that await you both at its confounding core. Bring your friend, because you will not survive alone.

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$
Released
Price
$ · Cheap
Players
👥 Not stated
Reviews
33% of 12

A relaxing cooperative digging adventure where you explore colorful underground worlds with friends. Team up to dig deeper, find valuable ores, upgrade your equipment, and collect rare dragons together.

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$
Released
Price
$ · Cheap
Players
👥 Up to 5 players
Reviews
69% of 732

In iDigging, you’ll balance treasure hunting, home improvement, and the strategy of hiding from curious neighbors and authorities. Upgrade, dig, and create your best life despite all the challenges!

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$
Released
Price
$ · Cheap
Players
👥 1–5 players
Reviews
100% of 1

Cooperative RPG about exploring dungeons on unknown islands in search of treasures and knowledge. Explore mysterious locations, find rare resources to craft powerful magic and artifacts, don't let ancient creatures kill you. Do not return without an object, CARRY OUT THE ORDER!!!

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$$
Released
Price
$$ · Standard
Players
👥 Not stated
Reviews
73% of 15

Metrogether is a train simulator where you drive, collect passengers, work together with friends and explore the subway network in a fictional city. Embark on your journey as a train driver, dispatcher or ticket inspector in single and multiplayer.

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