Online co-op Grand Strategy games

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

Showing 11–20 of 79 games matching Grand Strategy · updated 12 Oct 2026

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Free
Released
Price
Free
Players
👥 Not stated
Reviews
69% of 13

Galaxor is an online sci-fi strategy game where you build planets, research technologies, command fleets and expand your empire across the galaxy. Manage resources, join clans, take part in events and face alien threats in long-term space warfare.

Free
Released
Price
Free
Players
👥 1–8 players
Reviews
87% of 8

A turn-based territory strategy game for 1–8 players. Form pacts, conquer maps, analyze battles, create custom maps, and compete across three win conditions in single-player or online multiplayer.

$$$
Released
Price
$$$ · 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.

Free
Released
Price
Free
Players
👥 Not stated
Reviews
77% of 103

多职业战争策略手游,你可以在每个赛季中体验镇军、青囊、奇佐、天工等六大职业,在沙盘中施展多样的职业天赋与职业技能去影响补给、战术、地形、局势,与盟友打出多种精彩配合与战役,或火烧连营八百里,或奇袭粮道以弱胜强等等,你可以通过谋略感受千变万化的三国沙盘战场,让策略游戏从此不再是枯燥的调兵遣将。 此外,《三国:谋定天下》在长线运营和公平的游戏生态基础上,做到不卖资源、不卖加速、不锁卡、没有VIP。这,将带给你前所未有的SLG沙盘乐趣和激动人心的游戏体验!

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$
Released
Price
$ · Cheap
Players
👥 Not stated
Reviews
100% of 9

Experience the high-stakes hustle in a cutthroat multiplayer economic strategy game to clear your $1,000,000 debt. Grow your product, outbid rivals in real-time auctions, and manipulate the Syndicate to rule the district. Can you rise from Street Dealer to Kingpin, or will the heat catch up to you?

If you loved these, you'll love this

$
Released
Price
$ · Cheap
Players
👥 Not stated
Reviews
100% of 2

Develop your nation, command your army, and dominate the world in a real-time strategy game combining economic management, diplomacy, technological progress, and military conquest.

$
Released
Price
$ · Cheap
Players
👥 2–8 players
Reviews
100% of 1

Broken Crown is a fantasy RTS where you build a settlement, gather resources, research powerful upgrades, and command hundreds of units in formation-based battles. Advance troops through five visual tiers, preserve Bronze-to-Gold veterans, and conquer tactical maps shaped by Fog of War.

$$
Released
Price
$$ · Standard
Players
👥 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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$$
Released
Price
$$ · Standard
Players
👥 Up to 8 players
Reviews
75% of 96

Lead any of 221 countries through a living 2026 world in this data-driven grand strategy game. Shape economies, politics and alliances, wage conventional or nuclear war, run covert operations, and rewrite the global order—alone or online with up to seven friends.