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 81–90 of 213 games matching RTS · updated 12 Oct 2026

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$$
Released
Price
$$ · Standard
Players
👥 Not stated
Reviews
82% of 188

In this real-time grand strategy game, command armies, build cities, and manage a dynamic economy. Establish automated supply routes within your territory to streamline production. Fortify your defenses and brace for intense battles. Can you lead your empire to dominance?

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Free
Released
Price
Free
Players
👥 2–4 players
Reviews
89% of 29

Arithmetic Arena is a competitive math-challenge game built on the ELO ranking system. Each challenge tests not only your speed and accuracy, but also your ability to stay calm and composed. Confidence and composure will let you truly enjoy the game and find fun in every challenge.

Free
Released
Price
Free
Players
👥 Up to 4 players
Reviews
60% of 10

Hell's most profitable Sinstribution™ firm is under attack by IRS operatives hell bent on tanking the company. Play as Inferna LLC's diabolical CEO or as tax-collecting Agents in this asymmetrical multiplayer RTS action dungeon crawl.

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

The last world war didn't end conflict. The Iron Hand tyrannizes people, as the Resistance fights for liberation. In the resulting conflict high tech and brute force face off against guerrillas with unconventional tactics, leading to Red Chaos: A modern take on classic real-time strategy games.

$$
Released
Price
$$ · Standard
Players
👥 Up to 2 players
Reviews
83% of 90

Build bases, lead an army of robots, and squash brains in this radical hybrid between RTS and third-person shooter. Join a duo of quirky heroes on a mission to save Earth, smash an evil alien corporation, and complete their comic book collection.

$$
Released
Price
$$ · Standard
Players
👥 Not stated
Reviews
77% of 566

Worldwide Rush lets you experience passenger transportation and management on a global scale. Expand your company, meet the growing travel demand, compete against other companies, and discover new continents with its unique vehicles. The entire world is yours to control.

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$
Released
Price
$ · Cheap
Players
👥 Not stated
Reviews
100% of 4

HyperCoven is an old-school, fast-paced RTS where there's no time wasted collecting resources. Capture Coven all over the map, which will summon from among 55 unique units for you – for free. Only make sure they’re not snatched from you. Did we mention the map has no borders?