IMHO.

Single-player games like Millennium Conflict

Below are 10 single-player Steam games similar to Millennium Conflict, 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 Millennium Conflict page.

Ranked picks

  1. 1
    AI War 2 — Steam game cover

    AI War 2

    Single-player alternative to Millennium Conflict — playable solo, no multiplayer required. Shares Strategy and Indie with Millennium Conflict.

    The most devious and acclaimed artificial intelligence in strategy gaming is better than ever. A grand strategy/RTS hybrid that reverses many conventions of both genres. Take territory without attracting attention, build your empire with care, and adapt to an ever-evolving galactic battleground.

    2019StrategyIndieSimulation19.99 USDDeck PlayableSingle-playerSimilar games →
  2. 2
    The Outpost: Outer Frontier — Steam game cover

    The Outpost: Outer Frontier

    Single-player alternative to Millennium Conflict — playable solo, no multiplayer required. Shares Strategy and Indie with Millennium Conflict.

    Lead the forces of a human empire in a brutal squad-based RTS. Capture territory, secure vital sectors, deploy fortifications, and unlock new units and upgrades mid-battle to outmaneuver and crush the alien threat.

    2026StrategyIndieSingle-playerSimilar games →
  3. 3
    Seed World — Steam game cover

    Seed World

    Single-player alternative to Millennium Conflict — playable solo, no multiplayer required. Shares Strategy and Indie with Millennium Conflict.

    Seed World is a game that aims to combine automation, conveyor belts, and level progression. The game simplifies automation 'construction' into a series of progress bars, with each progress producing or consuming resources, and players need to manage resources.

    2025StrategyIndieSimulation2.99 USDSingle-playerSimilar games →
  4. 4
    rymdkapsel — Steam game cover

    rymdkapsel

    Single-player alternative to Millennium Conflict — playable solo, no multiplayer required. Shares Strategy and Indie with Millennium Conflict.

    Build a space station. Command the tiny crew. Explore the galaxy. A meditative space strategy game.

    2014StrategyIndie7.99 USDSingle-playerSimilar games →
  5. 5
    Mechs & Mercs: Black Talons — Steam game cover

    Mechs & Mercs: Black Talons

    Single-player alternative to Millennium Conflict — playable solo, no multiplayer required. Shares Action and Strategy with Millennium Conflict.

    You are the commander of the Black Talons company, currently stationed in the Oberon system. After an eventful campaign, the military Tzanar Union has overrun the planet of Genai and blocked all departure from the system: leaving you and the Black Talons stranded.

    2015ActionStrategyIndie9.99 USDDeck PlayableSingle-playerSimilar games →
  6. 6
    Sins of a Solar Empire: Trinity® — Steam game cover

    Sins of a Solar Empire: Trinity®

    Single-player alternative to Millennium Conflict — playable solo, no multiplayer required. Shares Strategy and Indie with Millennium Conflict.

    In Sins of a Solar Empire: Trinity, you are the leader of a civilization embroiled in a galactic war, fighting for the survival of your entire race against relentless foes.

    2011StrategyIndie9.99 USDDeck PlayableSingle-playerSimilar games →
  7. 7
    Total War: THREE KINGDOMS — Steam game cover

    Total War: THREE KINGDOMS

    Single-player alternative to Millennium Conflict — playable solo, no multiplayer required. Shares Action and Strategy with Millennium Conflict.

    Total War: THREE KINGDOMS is the first in the award-winning series to recreate epic conflict across ancient China. Combining a gripping turn-based campaign of empire-building & conquest with stunning real-time battles, THREE KINGDOMS redefines the series in an age of heroes & legends.

    2019ActionStrategy59.99 USDSingle-playerSimilar games →
  8. 8
    SandTable War: Three Kingdoms — Steam game cover

    SandTable War: Three Kingdoms

    Single-player alternative to Millennium Conflict — playable solo, no multiplayer required. Shares Strategy and Indie with Millennium Conflict.

    "SandTable War: Three Kingdoms" is a strategic simulation game set during the Three Kingdoms period. Here you can play as various factions from Three Kingdoms history to conquer cities and lands, unify the realm. With abundant historical officers and scenarios, come restore the Han Dynasty!

    2026StrategyIndieSimulation8.49 USDDeck PlayableSingle-playerSimilar games →
  9. 9
    Happy Lab — Steam game cover

    Happy Lab

    Single-player alternative to Millennium Conflict — playable solo, no multiplayer required. Shares Indie with Millennium Conflict.

    Welcome to the "Happy Lab"! You are a new intern at the most advanced science facility. Your daily job would be to train our AI "Aurora". "Aurora" purpose is to create the most advanced armor and fix all glitches on the way if there are any.

    2023Indie4.99 USDDeck PlayableSingle-playerSimilar games →
  10. 10
    Royal Merchant — Steam game cover

    Royal Merchant

    Single-player alternative to Millennium Conflict — playable solo, no multiplayer required. Shares Strategy and Indie with Millennium Conflict.

    Manage your team of Heroes and Crafters while upgrading your Castle in Royal Merchant! A blend of RPG, clicker, idler, and management gameplay with epic quests, crafting, and conquering bosses. Master the trade, outfit your Heroes, and grow your trade empire.

    2023SportsStrategyIndie0.99 USDSingle-playerSimilar games →