IMHO.

Single-player games like Signal Zero

Below are 8 single-player Steam games similar to Signal Zero, 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 Signal Zero page.

Ranked picks

  1. 1
    Re-Legion — Steam game cover

    Re-Legion

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

    Become The Prophet in a world of the future without the future! Lead your Cult in this cyberpunk RTS in the fight against evil corporations and heretics. Choose your creed, convert citizens, create an army and take over the city!

    2019ActionStrategyIndie9.99 USDSingle-playerSimilar games →
  2. 2
    Satellite Reign — Steam game cover

    Satellite Reign

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

    Satellite Reign is a real-time, class-based strategy game, set in an open-world cyberpunk city. You command a group of 4 agents through rain-soaked, neon-lit streets, where the law is the will of mega-corporations.

    2015ActionStrategyIndie29.99 USDSingle-playerSimilar games →
  3. 3
    A Total War Saga: FALL OF THE SAMURAI — Steam game cover

    A Total War Saga: FALL OF THE SAMURAI

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

    Experience the dramatic conflict of samurai culture and modern weaponry between the Imperial throne and the last Shogunate in 19th century Japan.

    2012Strategy29.99 USDSingle-playerSimilar games →
  4. 4
    AI War: Fleet Command — Steam game cover

    AI War: Fleet Command

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

    "You are outgunned. You are massively outnumbered. You must win." These are your orders. Humanity has already fought its war against the machines -- and lost. AI death squads stand watch over every planet and every wormhole, the few remaining human settlements are held captive in orbiting bubbles, and the AIs have turned their...

    2009StrategyIndie9.99 USDDeck PlayableSingle-playerSimilar games →
  5. 5
    Supreme Commander 2 — Steam game cover

    Supreme Commander 2

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

    Includes 47 Steam achievements, leaderboards, and stats!

    2010Strategy12.99 USDDeck PlayableSingle-playerSimilar games →
  6. 6
    Galactic Civilizations® I: Ultimate Edition — Steam game cover

    Galactic Civilizations® I: Ultimate Edition

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

    Galactic Civilizations is a space based strategy game in which you are in control of humanity's destiny.

    2012StrategyIndie4.99 USDSingle-playerSimilar games →
  7. 7
    There Came an Echo — Steam game cover

    There Came an Echo

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

    There Came an Echo is a real-time strategy game in which the player assumes command of a small squadron, using an advanced voice recognition system to issue orders. It features a character-driven sci-fi narrative that stars Wil Wheaton, Ashly Burch, Laura Bailey, Yuri Lowenthal, and more!

    2015StrategyIndie14.99 USDSingle-playerSimilar games →
  8. 8
    Hearts of Iron IV — Steam game cover

    Hearts of Iron IV

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

    Victory is at your fingertips! Your ability to lead your nation is your supreme weapon, the strategy game Hearts of Iron IV lets you take command of any nation in World War II; the most engaging conflict in world history.

    2016StrategySimulation14.99 USDDeck PlayableSingle-playerSimilar games →