Online co-op Combat games

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

Showing 311–320 of 1,027 games matching Combat · updated 12 Oct 2026

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Free
Released
Price
Free
Players
👥 Not stated
Reviews
56% of 30

Dreams Stories Online is an indie MMORPG where you return from death 🕯️ not as someone who has already triumphed, but as someone who still dreams. Walk through a persistent, wounded, and hostile world, guided by the hope of a great restoration.

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

Command your forces against endless waves of enemies in this intense RTS. Build bases, manage resources, and defend the Omega Beacon across procedurally generated worlds. Play solo or team up with friends via Steam multiplayer.

$
Released
Price
$ · Cheap
Players
👥 Up to 6 players
Reviews
100% of 1

Defest is a six player first person shooter taking place in the late 1980’s, following the missions of I.B.E.C in their efforts to discover the cause for reality-altering aberrations overtaking what were once family homes. Stay close, work together, and survive what cannot be survived.

$
Released
Price
$ · Cheap
Players
👥 Up to 6 players
Reviews
86% of 29

Fight waves of WW2 zombies as an interdimensional magical anime girl, alone, or with a team of up to 6! Customize your waifu's appearance and outfit, and wield a wide array of weapons and powers as you struggle to survive the undead horde.

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$
Released
Price
$ · Cheap
Players
👥 Not stated
Reviews
0% of 2

OutBreak: The Last Survivor is a brutal open-world multiplayer survival game. Team up with your friends to explore a post-apocalyptic environment, scavenge for loot, and build your ultimate base. Face off against the infected and rival players. Survive at all costs!

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$$
Released
Price
$$ · Standard
Players
👥 Not stated
Reviews
73% of 506

Nested Lands is a ruthless medieval RPG game featuring in-depth village building, large-scale social management and combats. Gather survivors, build a settlement, craft, master your skills, survive, and endure alone or in online co-op.

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$
Released
Price
$ · Cheap
Players
👥 Up to 9 players
Reviews
81% of 16

Stop the Nazi invasion of Washington! Fight solo or with up to 8 friends in this fast-paced satirical shooter. Use style and heavy firepower to save the capital and rewrite history.

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$$
Released
Price
$$ · Standard
Players
👥 1–16 players
Reviews
80% of 1,092

Oxygen Train is an open-world survival train game. Wake up in a world lacking oxygen. Chop trees, mine, gather resources, upgrade your unique train. Survive by planting, fishing, farming, exploring, fighting. Build your train kingdom. Supports 1-16 online co-op.

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$
Released
Price
$ · Cheap
Players
👥 Not stated
Reviews
47% of 72

ISO is an indie built one shot–one kill airsoft first person shooter. Fight alongside your friends in intense 5v5 battles or fight solo in 10 player free for all matches. Immerse yourself in the stunning visuals created in Unreal Engine 5 and dive into fast paced gameplay where every BB counts.

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