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 31–40 of 47 games matching Underground · updated 12 Oct 2026

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$$
Released
Price
$$ · Standard
Players
👥 Up to 4 players
Reviews
81% of 122

The world has ended. You are deep underground, and all alone with a cheery AI companion. You will have to mine and build to survive, and search for other survivors to help you. Will you be able to reach the surface? And what will you find when you get there?

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$
Released
Price
$ · Cheap
Players
👥 Not stated
Reviews
98% of 56

cheapskate (pre-alpha, in development, early access) is a third person action sports sandbox featuring offliine singleplayer, peer to peer multiplayer, easy mod support, Steam Deck compatibility, and one low price forever.

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$$
Released
Price
$$ · Standard
Players
👥 Not stated
Reviews
96% of 1,452

Last Train Outta' Wormtown is a chaotic Sandworm vs. Cowboys showdown. The Worm can only detect players touching the sand, like "hot lava" with a giant sandworm twist! Work together, Complete the objectives, and get outta' Wormtown! - Or, play as the Worm and gobble up your friends!

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$
Released
Price
$ · Cheap
Players
👥 Up to 100 players
Reviews
94% of 78

consume WHITE CHOCOLATE to escape this pitch black facility. share it with that vile creature that survived alongside you. or dont, be an nuisance, it's always profitable to be an nuisance.

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$
Released
Price
$ · Cheap
Players
👥 Up to 7 players

Loopsters is a cooperative platformer where players are tied together by a rope, racing to escape dangerous environments. Play solo or with up to 6 friends in competitive multiplayer. Overcome obstacles, master unique environments, and work together to climb to the top.

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Free
Released
Price
Free
Players
👥 Not stated
Reviews
66% of 1,736

A "blood-pumping, face-bashing" roguelike brawler. Master heroes of your choice, craft uniquely broken builds, and hack & pummel through a myriad of dungeons in a thrilling rampage.

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$
Released
Price
$ · Cheap
Players
👥 Up to 8 players
Reviews
86% of 849

Build your own Super Mining Mech and explore the underground in search of new natural resources. Customize your mech with unlockable parts to dig deeper than ever - by yourself or with up to 7 friends in online co-op multiplayer! So, what are you waiting for? There’s mining to be done!

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