Online co-op Mars games

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

Showing 1–10 of 10 games matching Mars · updated 12 Oct 2026

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$
Released
Price
$ · Cheap
Players
👥 Not stated

Enter the chaos of zero-gravity warfare. Zero-G Combat is a fast-paced online multiplayer shooter built with Unreal Engine 5. Master 360-degree movement, utilize tactical sci-fi weaponry, and dominate the arena where up is down and nowhere is safe.

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$$
Released
Price
$$ · Standard
Players
👥 Not stated
Reviews
87% of 1,036

Terraform a dead planet back to life in this open world survival crafting game. Explore ruins, gather resources, print machines, drive modular vehicles, grow forests, biomes, and ecosystems. Create life and make it thrive with your own hands.

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$
Released
Price
$ · Cheap
Players
👥 Up to 4 players
Reviews
0% of 1

Co-op sci-fi extraction mining for up to 4 players. You’re prisoners working for a cold Corporation. Drill planets, meet mandatory quotas, keep the surplus, and upgrade your gear. No heroes — only contracts, pressure, and profit.

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$$
Released
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$$ · Standard
Players
👥 Not stated
Reviews
68% of 2,728

Survive and colonize Mars alone or in online co-op. Build and upgrade your base, craft equipment, mine resources, produce water, oxygen and food, explore an open world, and repair complex machinery in a technical survival sandbox.

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Free
Released
Price
Free
Players
👥 Not stated
Reviews
57% of 7

A multiplayer FPS Sci-Fi game set in an alternate reality where reptilian beings battle humans for control of Earth. Features unique species-specific abilities, diverse weapon systems, and tactical gameplay.

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Free
Released
Price
Free
Players
👥 Not stated
Reviews
32% of 520

Dark Orbit is a free-2-play space MMO where three companies battle for galactic domination. Customize ships, trade resources, fight aliens and uncover a grand conspiracy on your epic cosmic journey. Thrilling PvP and PvE missions await! Will you lead your faction beyond the final frontier?

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$$
Released
Price
$$ · Standard
Players
👥 Up to 4 players
Reviews
94% of 3,527

Build physically simulated rovers to transport awkwardly shaped cargo across the rugged terrain of Mars. Earn funds, unlock new parts, and use your ingenuity to help the Martians establish a new home. Playable solo or in online co-op!

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$$
Released
Price
$$ · Standard
Players
👥 Not stated
Reviews
71% of 7

Scionide is a fast-paced sci-fi shooter set in 2268 AD, where the Amalgamate Republic fights for survival against the Scion Empire. Battle in single-player, PvP, and co-op PvE across dynamic maps.

$
Released
Price
$ · Cheap
Players
👥 Not stated

Evade VR is a unique arcade game in which you have to take the battle in outer space. You will have to fight the bots, dodging their shots and meteor showers. In battle you will help, an extensive arsenal of weapons, abilities and bonuses, combine them and earn as many points as possible.

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