IMHO.

Single-player games like Xenonauts

Below are 13 single-player Steam games similar to Xenonauts, 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 Xenonauts page.

Ranked picks

  1. 1
    Xenonauts 2 — Steam game cover

    Xenonauts 2

    Single-player alternative to Xenonauts — playable solo, no multiplayer required. Shares Strategy and Simulation with Xenonauts.

    Wage a global war of resistance against an alien invasion. Command turn-based tactical battles, build a network of covert bases, directly control your fighter wings, and achieve strategic victory in a simulation of asymmetric warfare against a technologically superior foe.

    2026StrategySimulationRPG39.99 USDDeck PlayableSingle-playerSimilar games →
  2. 2
    X-COM: UFO Defense — Steam game cover

    X-COM: UFO Defense

    Single-player alternative to Xenonauts — playable solo, no multiplayer required. Shares Strategy with Xenonauts.

    You are in control of X-COM: an organization formed by the world's governments to fight the ever-increasing alien menace.

    2008Strategy4.99 USDSingle-playerSimilar games →
  3. 3
    Into the Breach — Steam game cover

    Into the Breach

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

    Control powerful mechs from the future to defeat an alien threat. Each attempt to save the world presents a new randomly generated challenge in this turn-based strategy game.

    2018StrategyIndieSimulation14.99 USDDeck VerifiedSingle-playerSimilar games →
  4. 4
    GhostControl Inc. — Steam game cover

    GhostControl Inc.

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

    Manage a team of ghosthunters and free London from paranormal terror in turn-based battles. Develop your own strategy and build your business well.

    2014StrategyIndieSimulation18.99 USDSingle-playerSimilar games →
  5. 5
    X-COM: Apocalypse — Steam game cover

    X-COM: Apocalypse

    Single-player alternative to Xenonauts — playable solo, no multiplayer required. Shares Strategy with Xenonauts.

    There's something evil in the city tonight... Earth has been ravaged by human excess, petty conflict and alien invasion. The world's population has been herded into huge cities, the first of which was Mega Primus. 2084: A Utopia shattered, social collapse and civil unrest reigns in Mega Primus. Fiendish aliens terrorize the city.

    2008Strategy4.99 USDSingle-playerSimilar games →
  6. 6
    Horizon — Steam game cover

    Horizon

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

    Horizon is a turn-based space strategy game of galactic exploration and conquest in which you are in control of humanity’s destiny. You will explore deep space, find new frontiers and discover alien artifacts hidden on long-abandoned planets.

    2014StrategyIndieAdventure29.99 USDSingle-playerSimilar games →
  7. 7
    XCOM: Enemy Unknown — Steam game cover

    XCOM: Enemy Unknown

    Single-player alternative to Xenonauts — playable solo, no multiplayer required. Shares Strategy with Xenonauts.

    The XCOM: Enemy Unknown - Slingshot Pack is Now Available!

    2012Strategy5.99 USDDeck PlayableSingle-playerSimilar games →
  8. 8
    Star Hammer: The Vanguard Prophecy — Steam game cover

    Star Hammer: The Vanguard Prophecy

    Single-player alternative to Xenonauts — playable solo, no multiplayer required. Shares Strategy and Simulation with Xenonauts.

    Take command of Naval Strike Group 7 and lead your fleet to victory in full 3D tactical space combat. Star Hammer: The Vanguard Prophecy is a sci-fi strategy saga that will test your skills as both capital assault ship Captain and naval fleet Commander.

    2015StrategyAdventureSimulation19.99 USDSingle-playerSimilar games →
  9. 9
    Jagged Alliance 3 — Steam game cover

    Jagged Alliance 3

    Single-player alternative to Xenonauts — playable solo, no multiplayer required. Shares Strategy with Xenonauts.

    The country of Grand Chien is thrown into chaos when the elected president goes missing and the paramilitary force known as “the Legion” seizes control. Hire mercs, meet interesting characters, and fight in tactically deep turn-based combat in this true successor to a beloved franchise.

    2023ActionStrategy13.49 USDDeck PlayableSingle-playerSimilar games →
  10. 10
    Phoenix Point — Steam game cover

    Phoenix Point

    Single-player alternative to Xenonauts — playable solo, no multiplayer required. Shares Strategy with Xenonauts.

    The acclaimed strategy game from the creator of X-COM. Fight tactical battles on procedural maps against a foe that adapts to your tactics. Manage diplomacy and economy on a global scale. Research, explore, overcome. Now includes Steam Workshop support for mods!

    2020StrategyRPG24.99 USDDeck VerifiedSingle-playerSimilar games →
  11. 11
    Silent Storm Gold Edition — Steam game cover

    Silent Storm Gold Edition

    Single-player alternative to Xenonauts — playable solo, no multiplayer required. Shares Strategy with Xenonauts.

    Silent Storm from leading Russian developer Nival is a true 3D tactical turn-based Role-Playing-Game set against the backdrop of WWII. As the conflict rages on the frontlines, you’ll be leading a small multinational squad behind enemy lines to gather information and wreak havoc on your enemies while trying to thwart a mysterious new...

    2013ActionStrategyRPG9.99 USDDeck PlayableSingle-playerSimilar games →
  12. 12
    Phantom Doctrine — Steam game cover

    Phantom Doctrine

    Single-player alternative to Xenonauts — playable solo, no multiplayer required. Shares Strategy with Xenonauts.

    The year is 1983. The world teeters on the verge of destruction as the Cold War tightens its icy grip. East or West: trust no one, question everything. The fate of humanity rests in your hands as you pit spy versus spy in tactical Phantom Doctrine.

    2018ActionStrategyRPG39.99 USDSingle-playerSimilar games →
  13. 13
    XCOM® 2 — Steam game cover

    XCOM® 2

    Single-player alternative to Xenonauts — playable solo, no multiplayer required. Shares Strategy with Xenonauts.

    XCOM 2 is the sequel to XCOM: Enemy Unknown, the 2012 award-winning strategy game of the year. Earth has changed and is now under alien rule. Facing impossible odds you must rebuild XCOM, and ignite a global resistance to reclaim our world and save humanity.

    2016Strategy2.99 USDDeck PlayableSingle-playerSimilar games →