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 101–110 of 213 games matching RTS · updated 12 Oct 2026

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$$
Released
Price
$$ · Standard
Players
👥 Not stated

Oikizo is a city-building game. Start by placing your first building and a few citizens, then make your city prosper. The strength of Oikizo lies in the ability to manage a city cooperatively with your friends.

Free
Released
Price
Free
Players
👥 Not stated
Reviews
67% of 84

SSA is a 5v5 twin-stick shooter MOBA with vehicular combat in a fully destructible city. Fight huge swarms, complete missions, and blast through buildings to ambush your enemies. Positioning matters and every shot is a skill shot!

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$
Released
Price
$ · Cheap
Players
👥 2–8 players
Reviews
100% of 16

Command your fleet and outwit your friends in Wyrd Waters, a fast-paced tactical multiplayer Norse-folklore inspired game for up to 8 players. Navigate kraken-infested seas where strategy, betrayal, and sea monsters rule the tides.

$$$
Released
Price
$$$ · Expensive
Players
👥 Not stated
Reviews
55% of 26,193

Broken Arrow is a large-scale real-time modern warfare tactics game that combines the complexity of joint-forces wargaming with action-packed real-time tactics gameplay.

$$
Released
Price
$$ · 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?

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

Start your world conquest with any faction you choose. Build and upgrade your production buildings. Plan and decide the composition of your army. Create your own ability deck. Challenge legendary boss to a fight. Embark on an immersive story campaign. Play with your friends.

$
Released
Price
$ · Cheap
Players
👥 Not stated
Reviews
76% of 21

As the leader of a Stone Age tribe, gather resources, develop your settlement and lead your people through the challenges of a world full of danger and mystery. Your survival skills, strategic planning and decision-making will be key in this battle for survival.

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$$
Released
Price
$$ · Standard
Players
👥 Not stated
Reviews
81% of 16

Elemental War Clash combines classic tower defense with roguelite and RPG mechanics as well as different elements to combine and create more powerful towers. In its PvP mode you can also battle with other players trying to overrun them with your own hordes of monsters!

$$
Released
Price
$$ · Standard
Players
👥 Up to 4 players
Reviews
82% of 1,876

Oddsparks is a blend of automation and real-time strategy for both the die-hard fans of the automation genre and the automation-curious. Explore a strange fantasy world, uncover the mysteries of the past, automate your workshops, and go on adventures with your odd & adorable Sparks!

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$$
Released
Price
$$ · Standard
Players
👥 Not stated
Reviews
81% of 318

TOWER ▪ DEFENSE ▪ STRATEGY. Control Vessels. Utilize their uniquely deep set of towers. Create an everchanging defense. Play with friends. Protect your Basin at all costs. An absolute Tower Defense, Real-Time Strategy Hybrid