Online co-op Military games

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

Showing 31–40 of 291 games matching Military · updated 12 Oct 2026

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$$$
Released
Price
$$$ · Expensive
Players
👥 Not stated
Reviews
74% of 466

Korea. IL-2 Series is a next-generation flight simulator set during the Korean War. Climb into the cockpit of early jet fighters and shape the outcome of legendary aerial battles.

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Free
Released
Price
Free
Players
👥 Not stated
Reviews
96% of 825

Nazi Zombies is a cooperative survival game where players fend off escalating waves of Nazi zombies, earning points by killing zombies and repairing barriers to buy weapons, upgrades, perks, and unlock new map areas to maximize their survival.

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$$
Released
Price
$$ · Standard
Players
👥 Up to 2 players
Reviews
49% of 1,051

Company of Heroes 3: Final Stand delivers a standalone roguelite wave-defense experience for solo and cooperative play. Command and survive against fast-paced escalating enemy waves, intimidating bosses, and dynamic battlefield events. Are you ready to make your final stand?

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$$
Released
Price
$$ · Standard
Players
👥 2–4 players
Reviews
92% of 79

A faithful digital adaptation of the acclaimed board game Space Empires 4X by GMT Games, beloved by wargamers for almost two decades. Command the rise of your civilization and the fall of others, all in one to two hours.

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$$
Released
Price
$$ · Standard
Players
👥 Not stated
Reviews
72% of 140

A fast-paced classic military FPS inspired by old-school online shooters. Battle in online PvP or PvE against intelligent AI bots. Unlock soldiers, weapons, perks, and attachments, earn XP, customize your loadouts, and enjoy full matches with no empty servers.

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Free
Released
Price
Free
Players
👥 Not stated
Reviews
76% of 21

A semi-idle survival strategy set in a persistent post-apocalyptic wasteland. Recruit survivors, gather resources and craft equipment, seize territory and build your base — and fight other players if you choose. One account across desktop, web, and mobile.

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Free
Released
Price
Free
Players
👥 Up to 5 players
Reviews
77% of 1,369

Codename CURE II is a co-operative first person shooter set in the aftermath of a zombie apocalypse. Create an elite military squad with up to five players and fight your way through hordes of zombies in a variety of dynamic objective missions.

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$
Released
Price
$ · Cheap
Players
👥 Not stated
Reviews
73% of 23

TONK is a multiplayer tank game, with over 100 vehicles to unlock, 3 gamemodes to play around with, and a lot of different playstyles, combinations and builds to make

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$$
Released
Price
$$ · Standard
Players
👥 Not stated
Reviews
81% of 11

Fast-paced top-down multiplayer shooter with offline bot battles and online PvP. Play team deathmatch solo or with friends, unlock weapons, customize loadouts, and enjoy chaotic arcade-style combat with full progression online or offline.

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$$$
Released
Price
$$$ · Expensive
Players
👥 Up to 2 players
Reviews
77% of 1,256

ZeroSpace is a hybrid sci-fi RTS / RPG game that allows you to play as the commander of The Protectorate, a galactic force dedicated to securing humanity’s place in the galaxy. The Orion sector is locked in a vicious power struggle between many alien factions, ready to fight to the death.