Single-player games like Zero-K
Below are 9 single-player Steam games similar to Zero-K, ranked by player overlap. Every pick carries Steam's Single-player category, so multiplayer-only titles or always-online games don't sneak in. imho.run pulls the category data from Steam directly — Single-player here matches what the store labels.
Want the full alternatives list (paid + free + Steam Deck + cheaper picks)? See the parent games like Zero-K page.
Ranked picks
- 1

Supreme Commander: Forged Alliance
Single-player alternative to Zero-K — playable solo, no multiplayer required. Shares Strategy with Zero-K.
The last days of man are at hand.. Two years after the Infinite War the once great warring nations now lie in ruins, and humanity’s hope for a brighter future is nothing but a bitter memory. A new, seemingly unstoppable enemy, supported by the zealots of The Order, now seeks to eradicate mankind: UEF, Aeon Loyalist, and Cybran alike.
- 2

Planetary Annihilation: TITANS
Single-player alternative to Zero-K — playable solo, no multiplayer required. Shares Strategy and Indie with Zero-K.
Wage war across entire solar systems with massive armies at your command. Annihilate enemy forces with world-shattering TITAN-class units, and demolish planets with massive super weapons!
- 3

Rusted Warfare - RTS
Single-player alternative to Zero-K — playable solo, no multiplayer required. Shares Strategy and Indie with Zero-K.
{{An RTS inspired by the classics of the past!}} Making up for it's subpar retro graphics with fun gameplay and modern multi-threaded tech enabling huge battles to run smooth... Featuring singleplayer challenges, skirmish, sandbox, 10-player multiplayer & workshop modding.
- 4

Ashes of the Singularity: Escalation
Single-player alternative to Zero-K — playable solo, no multiplayer required. Shares Strategy and Simulation with Zero-K.
A massive-scale real-time strategy game where you command entire armies on a dynamic battlefield. Conquer multiple worlds across several single-player campaigns; or play with your friends in multiplayer combat.
- 5

Iron Harvest
Single-player alternative to Zero-K — playable solo, no multiplayer required. Shares Strategy with Zero-K.
A classic real-time strategy game with an epic single player campaign, multiplayer & coop, set in the alternate reality of 1920+
- 6

Total Annihilation
Single-player alternative to Zero-K — playable solo, no multiplayer required. Shares Strategy with Zero-K.
What began as a conflict over the transfer of consciousness from flesh to machines escalated into a war which has decimated a million worlds. The Core and the Arm have all but exhausted the resources of a galaxy in their struggle for domination.
- 7

Executive Assault
Single-player alternative to Zero-K — playable solo, no multiplayer required. Shares Strategy with Zero-K.
Executive Assault is an indie real-time strategy/first-person shooter where you can not only build your base and create armies, but also take control of your units and fight as one of them.
- 8

Company of Heroes 2
Single-player alternative to Zero-K — playable solo, no multiplayer required. Shares Strategy with Zero-K.
Experience the ultimate WWII RTS platform with COH2 and its standalone expansions. This package includes the base game, which you can then upgrade by purchasing The Western Front Armies, Ardennes Assault and/or The British Forces. More info in the "About This Game" section below.
- 9

Supreme Commander
Single-player alternative to Zero-K — playable solo, no multiplayer required. Shares Strategy with Zero-K.
For a thousand years, three opposing forces have waged war for what they believe is true. There can be no room for compromise: their way is the only way. Dubbed The Infinite War, this devastating conflict has taken its toll on a once-peaceful galaxy and has only served to deepen the hatred between the factions.