Online co-op 4X games

Every online co-op 4X game on Steam we know of, newest first. Add tags or a price band to narrow it down.

Showing 21–30 of 60 games matching 4X · updated 12 Oct 2026

Filters: 4X × Clear all
Free
Released
Price
Free
Players
👥 Not stated
Reviews
50% of 8

在这款沉浸式三国策略卡牌游戏中,你将化身一方主公,招揽名将、打造无敌军团,体验从乱世枭雄到一统天下的霸业征程!

If you loved these, you'll love this

$$
Released
Price
$$ · Standard
Players
👥 Not stated
Reviews
69% of 219

Forge your Kingdom amidst the Ruins of Rome in this turn-based 4X strategy game! As the world crumbles, rebuild civilization and shape your people’s destiny. Unleash your strategic prowess, conquer provinces, and crush all who stand in your way.

$$
Released
Price
$$ · Standard
Players
👥 Up to 8 players
Reviews
69% of 175

"Pennon and Battle" is a turn-based strategy war game. As a lord, you will play a crucial role in the revival of the kingdom! Lead heroes and armies to expand territory in Ruachland,  utilize tactics and magic to eliminate enemy forces, and create your own legend!

If you loved these, you'll love this

Free
Released
Price
Free
Players
👥 Not stated
Reviews
57% of 14

点燃你的战魂,投身乱世掀起惊天风暴!化身铁血诸侯,号令三国名将,统领无敌雄师,在真实还原的三国版图上纵横沙场,血战四方!

$$
Released
Price
$$ · Standard
Players
👥 1–4 players
Reviews
54% of 376

Thrive: Heavy Lies the Crown is a complex city builder, where the fate of your kingdom hinges on your every decision. Explore this medieval land alone or with friends, make tough moral choices and conquer your foes in RTS combat. Will you struggle to survive, or find the strength to Thrive?

If you loved these, you'll love this

Free
Released
Price
Free
Players
👥 Not stated
Reviews
68% of 45

东汉末年,天下动荡,群雄并起,在这片风云变幻的乱世中,你将化身一方霸主,自偏安一隅的孤城出发,广揽贤才、经营城政、整军备战、攻城略地。是匡扶汉室,重振中兴?还是割据一方,自立为王?亦或是问鼎中原,君临天下?你的每一次抉择皆可改写这段波澜壮阔的乱世史诗!

$
Released
Price
$ · Cheap
Players
👥 Not stated
Reviews
91% of 12

In Ascendant Realms you lead a nation in a struggle for glory. Cozy setting meets tactical thinking from classic turn based strategies, but twists it with compact gameplay. Develop your city, research new technologies, fight other leaders - or just create your own story in the sandbox.

$
Released
Price
$ · Cheap
Players
👥 Not stated
Reviews
20% of 5

Let’s Build Wonders:Galaxy is a multiplayer cooperative space-building game. In the game, members within each alliance achieve efficient resource sharing and division of labor through trade transportation means. They work to expand their alliance's galactic territory to resist pirate harassment.

If you loved these, you'll love this