Online co-op War games

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

Showing 41–50 of 261 games matching War · updated 12 Oct 2026

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Free
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Price
Free
Players
👥 Not stated
Reviews
0% of 3

BlackColled MF2 brings Fictional WW3 Scenario to gamers with 10 maps and dozens of operators. Play with bots or other players through many locations across the world and unlock different operators from various fractions.

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👥 Not stated
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39% of 94

Get ready for a dynamic, team-based twist on MONOPOLY® set in the Star Wars™ galaxy! Choose your favorite heroes or villains, use their unique powers, and battle for control of the galaxy.

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Free
Released
Price
Free
Players
👥 Not stated
Reviews
64% of 1,312

Modern Warships is an online action game about contemporary military vehicles. Join now and detect the enemy with recon aircraft, launch volleys of guided missiles from cruisers, sneak up to surface vessels with submarines, and provide cover to the allied fleet with jet fighters and helicopters.

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👥 Not stated
Reviews
33% of 3

ARB: Alien Races Battle is a lane-based alien auto-battler where strategy, economy, positioning, and army comp determine victory. Choose from 5 unique factions, command alien races, unlock upgrades + faction doctrines, and overwhelm your opponents through superior planning, control, and adaptation.

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Free
Released
Price
Free
Players
👥 Not stated
Reviews
63% of 38

A real-time strategy military game that lets you directly command your units, with no build times and impressive 3D visuals. Set in a post‑apocalyptic Europe - form alliances with other commanders, fight for resources and territory and rise in honor as a war commander.

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68% of 3,886

Wild Assault is an anthro-themed tactical shooter built with Unreal Engine 5, featuring large-scale battlefield gameplay centered around Valiant abilities. Work closely with your team, harness your instincts, and charge into battle to secure victory.

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Players
👥 Up to 2 players
Reviews
66% of 42

A tactical Vietnam War shooter with open mission areas. Infiltrate, ambush, or go in loud. Customize weapons, use vehicles, and play solo, in coop, or PvP. Create missions with the built-in editor.

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71% of 14

The Long Survival is a cooperative shooter in which you'll have to survive waves of enemies. Protect the nexus by fortifying your area with various structures and prepare for the siege. Upgrade your weapons, strategize with your teammates, or play as a solo warrior. Will you Survive?

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$$ · Standard
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👥 Not stated
Reviews
50% of 4

Turn-based grand strategy in the Age of Discovery. Develop a transport network, industrialise your economy, colonise the New World, and compete with five rival powers. Inspired by Imperialism 2. Early Access — built by one developer in his spare time.

Free
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Price
Free
Players
👥 Not stated
Reviews
63% of 765

Join this free-to-play PvP online naval shooter with fast-paced combat, easy-to-learn gameplay, intuitive controls, and cross-platform play on Steam, console, and mobile. Choose from 600+ warships and 150+ Commanders, and master tactics on diverse maps. Play now and become a legend!

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