Online co-op RTS games

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

Showing 71–80 of 213 games matching RTS · updated 12 Oct 2026

Filters: RTS × Clear all
$
Released
Price
$ · Cheap
Players
👥 Not stated

'Tank Battle' is a 1v4 asymmetrical combat game. In the game, you can play as a rogue AI with a god's-eye view, controlling household appliances to set traps everywhere; or become an awakened toy tank, defending your home and collaborating in battle. The epic fight is about to begin!

Free
Released
Price
Free
Players
👥 Not stated
Reviews
46% of 49

Engage in thrilling online naval battles with historical warships in PvP(12vs12) action game! Take command of legendary warships and compete against players worldwide in epic naval battles!

If you loved these, you'll love this

$$$
Released
Price
$$$ · Expensive
Players
👥 Up to 5 players
Reviews
81% of 4,823

Rebuild hope in a world that was lost in the fog. Lead your Pioneers across the isles of Pagonia, unite scattered tribes, raise thriving communities and discover the history of your people as you reclaim your world in the new story campaign.

If you loved these, you'll love this

Free
Released
Price
Free
Players
👥 Not stated
Reviews
54% of 11

以一种全新的真实视角,纵览全局,带你重回乱世三国之中,经营城池,招兵买马,率领亲自招募的武将征战沙场,和千万玩家一起,在三国真实地图上,攻城掠地,一统天下!

Free
Released
Price
Free
Players
👥 Up to 4 players
Reviews
43% of 23

A co-op roguelike dungeon exploration game. As you progress with your teammates, you will face dilemma choices where growing stronger yourself means someone else becomes weaker. Each run, you must create builds by combining different maps, classes, skills, and items, and overcome the cursed dungeon.

If you loved these, you'll love this

$$
Released
Price
$$ · Standard
Players
👥 Not stated
Reviews
63% of 22

Lead your squad of Champions into a fast-paced and tactile competitive arena where tactics, magic, and power collide. Master the battlefield in this real-time clash of Champions!

$$$
Released
Price
$$$ · Expensive
Players
👥 Not stated
Reviews
69% of 12,304

Shape the Roman Empire in this genre-defining strategic builder game. Build cities while expanding your influence through Roman provinces. Govern using your economic prowess, diplomatic skills, or military might.

If you loved these, you'll love this

$$
Released
Price
$$ · Standard
Players
👥 Not stated
Reviews
85% of 216

BattleGroupVR2 is a virtual reality real-time space strategy where you explore the galaxy and lead a fleet of powerful warships from the bridge of your flagship. Explore, mine, trade, hunt. Grow your fleet, upgrade your ships, train your captains, and battle the enemy from the captain's chair.

$
Released
Price
$ · Cheap
Players
👥 Not stated
Reviews
40% of 419

7 Days Blood Moons is a 4v1 fight to the death. Survivors fortify bases and scavenge for materials while the Zombie Master commands and possesses the horde to crush them. Play solo or with friends – up to 4 survivors can team up against a human or AI Zombie Master. Who will prevail?