IMHO.

Single-player games like Alliance of the Sacred Suns

Below are 8 single-player Steam games similar to Alliance of the Sacred Suns, 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 Alliance of the Sacred Suns page.

Ranked picks

  1. 1
    Shadow Empire — Steam game cover

    Shadow Empire

    Single-player alternative to Alliance of the Sacred Suns — playable solo, no multiplayer required. Shares Strategy and Simulation with Alliance of the Sacred Suns.

    Shadow Empire is a deep turn-based 4X wargame with a unique blend of military focus, procedurally generated content and role-playing features. Players take the seat of the supreme ruler of a small nation, with the goal of reconquering a devastated planet.

    2020StrategySimulationRPG39.99 USDSingle-playerSimilar games →
  2. 2
    Breachway — Steam game cover

    Breachway

    Single-player alternative to Alliance of the Sacred Suns — playable solo, no multiplayer required. Shares Strategy and Simulation with Alliance of the Sacred Suns.

    Explore the galaxy in this deckbuilding, sci-fi roguelike where ship upgrades and crew management are key to your survival. Optimize resource generation, engage in intense turn-based battles, and take on ever-growing threats as you seek out The Signal.

    2024StrategySimulationRPG19.99 USDDeck PlayableSingle-playerSimilar games →
  3. 3
    Sid Meier's Civilization®: Beyond Earth™ — Steam game cover

    Sid Meier's Civilization®: Beyond Earth™

    Single-player alternative to Alliance of the Sacred Suns — playable solo, no multiplayer required. Shares Strategy with Alliance of the Sacred Suns.

    Sid Meier’s Civilization: Beyond Earth is a new science-fiction-themed entry into the award winning Civilization series. As part of an expedition sent to find a home beyond Earth, lead your people into a new frontier, explore and colonize an alien planet and create a new civilization in space.

    2014Strategy9.99 USDSingle-playerSimilar games →
  4. 4
    Age of Wonders: Planetfall — Steam game cover

    Age of Wonders: Planetfall

    Single-player alternative to Alliance of the Sacred Suns — playable solo, no multiplayer required. Shares Strategy with Alliance of the Sacred Suns.

    Age of Wonders: Planetfall is the new strategy game from Triumph Studios, creators of the critically acclaimed Age of Wonders series, bringing all the exciting tactical turn-based combat and in-depth empire building of its predecessors to space in an all-new, sci-fi setting.

    2019Strategy10.19 USDDeck PlayableSingle-playerSimilar games →
  5. 5
    Old World — Steam game cover

    Old World

    Single-player alternative to Alliance of the Sacred Suns — playable solo, no multiplayer required. Shares Strategy and Simulation with Alliance of the Sacred Suns.

    Old World is a revolutionary new historical strategy game where you lead your dynasty over generations of rule against rival kings and queens. Wage massive wars, manage your court, and build a dynasty — or watch your empire crumble to dust. What legacy will you leave behind?

    2022StrategySimulationRPG39.99 USDDeck PlayableSingle-playerSimilar games →
  6. 6
    Warhammer 40,000: Gladius - Relics of War — Steam game cover

    Warhammer 40,000: Gladius - Relics of War

    Single-player alternative to Alliance of the Sacred Suns — playable solo, no multiplayer required. Shares Strategy with Alliance of the Sacred Suns.

    Warhammer 40,000: Gladius – Relics of War brings you to a world of terror and violence. Four factions will engage in a brutal war for dominance over the planet’s resources. In the first turn-based 4X strategy game set in Warhammer 40,000 you will lead one of four unique factions.

    2018Strategy39.99 USDDeck PlayableSingle-playerSimilar games →
  7. 7
    Galactic Civilizations III — Steam game cover

    Galactic Civilizations III

    Single-player alternative to Alliance of the Sacred Suns — playable solo, no multiplayer required. Shares Strategy with Alliance of the Sacred Suns.

    Build a civilization that will stand the test of time in the largest space-based strategy game ever! Choose from dozens of unique races and make a name for yourself across the galaxy through diplomacy, espionage, technological advances, and more.

    2015Strategy29.99 USDDeck PlayableSingle-playerSimilar games →
  8. 8
    Sid Meier's Civilization® V — Steam game cover

    Sid Meier's Civilization® V

    Single-player alternative to Alliance of the Sacred Suns — playable solo, no multiplayer required. Shares Strategy with Alliance of the Sacred Suns.

    Create, discover, and download new player-created maps, scenarios, interfaces, and more!

    2010Strategy7.49 USDDeck PlayableSingle-playerSimilar games →