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 21–30 of 213 games matching RTS · updated 12 Oct 2026

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$$
Released
Price
$$ · Standard
Players
👥 Not stated
Reviews
84% of 38

Lead your small caravan on a great journey across the ancient world, in a story-driven base-building RTS where protecting your family and friends matters more than conquest.

$
Released
Price
$ · Cheap
Players
👥 1–4 players
Reviews
100% of 4

Fast real-time space conquest for 1-4 players. Capture planets, launch missile salvos, and outmaneuver friends in 10-minute Deathmatch blitzes — or scheme through 30 minutes of diplomacy, trade and betrayal in Hegemony mode. Cross-play with mobile; bots fill empty seats so a match always starts.

Free
Released
Price
Free
Players
👥 Not stated
Reviews
78% of 41

《乱世江山》集即时战略与沙盘征战于一体,立足三国乱世疆场,主打临场指挥战术交锋与宏大团战,在古战场纵横对决,尽享策略博弈与争霸豪情

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$
Released
Price
$ · Cheap
Players
👥 1–3 players
Reviews
100% of 1

Death Kitchen is a fast-paced online co-op horror cooking game. Decide between a chef and a waiter, then coordinate with your friends to serve alien customers who can kill you if you make a mistake. Embrace the chaos and deliver quality with your new intergalactic restaurant chain.

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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.

$
Released
Price
$ · Cheap
Players
👥 Not stated
Reviews
75% of 69

To protect the magical Lifestone, you must strategise, manage and build a fortified settlement. Lead your fellow survivors into battle against waves of nocturnal monsters who wish to take this precious Lifestone from your world.

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$
Released
Price
$ · Cheap
Players
👥 Up to 100 players

The party game where you must NEVER say the same thing as everyone else. Find the answer no one dares to give and survive, up to 100 players in Battle Royale ! One friend buys it, the whole table plays FREE from their browser. Built for streaming.

$$
Released
Price
$$ · Standard
Players
👥 Up to 2 players
Reviews
49% of 1,051

Company of Heroes 3: Final Stand delivers a standalone roguelite wave-defense experience for solo and cooperative play. Command and survive against fast-paced escalating enemy waves, intimidating bosses, and dynamic battlefield events. Are you ready to make your final stand?

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$
Released
Price
$ · Cheap
Players
👥 Not stated

Froggy Works is a desktop companion farming game you can play actively, or let it do its own thing in the background or on the side of the screen as an idler. Build your farm, hire frogs, decorate and fully customize your island with a ton of different decorative tiles and structures!

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