IMHO.

Single-player games like Ghost Signal: A Stellaris Game

Below are 11 single-player Steam games similar to Ghost Signal: A Stellaris Game, 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 Ghost Signal: A Stellaris Game page.

Ranked picks

  1. 1
    Caves Of Mars — Steam game cover

    Caves Of Mars

    Single-player alternative to Ghost Signal: A Stellaris Game — playable solo, no multiplayer required. Shares Action and Adventure with Ghost Signal: A Stellaris Game.

    Caves of Mars is a new 2D sci-fi action adventure space shooter game set in the mysterious caves of the planet Mars. Your mission is to navigate your spacecraft through 100 procedurally generated levels, battle against and destroy enemies and alien lifeforms and collect as many gems as possible.

    2021ActionIndieAdventure0.99 USDSingle-playerSimilar games →
  2. 2
    Reality Break — Steam game cover

    Reality Break

    Single-player alternative to Ghost Signal: A Stellaris Game — playable solo, no multiplayer required. Shares Action and Adventure with Ghost Signal: A Stellaris Game.

    Rewrite the universe! Break reality to change your fate, and use your powers to stop sinister forces from altering existence itself. Discover the origin of your new abilities in a fast-paced ARPG Loot Collection Roguelite where you will bend, break, and change the laws of the universe!

    2025ActionIndieAdventure24.99 USDDeck VerifiedSingle-playerSimilar games →
  3. 3
    Axan Ships — Steam game cover

    Axan Ships

    Single-player alternative to Ghost Signal: A Stellaris Game — playable solo, no multiplayer required. Shares Action with Ghost Signal: A Stellaris Game.

    Sci-fi RTS and Top-Down

    2019ActionStrategyIndie10.99 USDSingle-playerSimilar games →
  4. 4
    Planet B24 — Steam game cover

    Planet B24

    Single-player alternative to Ghost Signal: A Stellaris Game — playable solo, no multiplayer required. Shares Action and Adventure with Ghost Signal: A Stellaris Game.

    Planet B24 is a first-person horror quest. In this game, you are abducted by aliens to put their terrible experiments on you. You have to solve puzzles and escape from the aliens so that they do not catch you. Get out of this damn planet to return to planet Earth.

    2021ActionIndieAdventure4.99 USDSingle-playerSimilar games →
  5. 5
    Hookscrap — Steam game cover

    Hookscrap

    Single-player alternative to Ghost Signal: A Stellaris Game — playable solo, no multiplayer required. Shares Action and Adventure with Ghost Signal: A Stellaris Game.

    Fight as the owner of Hookscrap in a thrilling 2D rogue-like. Unleash the power of your Harpoon, by launching ships & asteroids at enemies. Upgrade your ship with loot from your foes, and become even stronger. Explore 5 unique levels in a randomly generated map & take down the fearsome SC Judgement!

    2023ActionIndieAdventure0.99 USDSingle-playerSimilar games →
  6. 6
    Psycho Starship Rampage — Steam game cover

    Psycho Starship Rampage

    Single-player alternative to Ghost Signal: A Stellaris Game — playable solo, no multiplayer required. Shares Action with Ghost Signal: A Stellaris Game.

    You play the psychotic A.I. of a warship lost in space which tries to come back to Earth. Build your spaceship from scratch. Load it with weapons. And use your creation to destroy waves of innocent aliens throughout numerous levels. Loot their carcasses, extend your ship and jump to the next sector for more action!

    2015ActionIndie9.99 USDSingle-playerSimilar games →
  7. 7
    Retro Classix: SRD - Super Real Darwin — Steam game cover

    Retro Classix: SRD - Super Real Darwin

    Single-player alternative to Ghost Signal: A Stellaris Game — playable solo, no multiplayer required. Shares Action with Ghost Signal: A Stellaris Game.

    Super Real Darwin is a fast-paced, vertical scrolling shoot-em-up that rewards skill and persistence – a cult classic for the retro shmup fan. Take control of a fighter ship capable of mutating into different shapes as it evolves while fighting off enemy invaders.

    2021ActionSingle-playerSimilar games →
  8. 8
    Void Scrappers — Steam game cover

    Void Scrappers

    Single-player alternative to Ghost Signal: A Stellaris Game — playable solo, no multiplayer required. Shares Action with Ghost Signal: A Stellaris Game.

    Blast hordes of alien ships into junk. Collect the scrap to upgrade your ship into an unstoppable force of destruction. Unlock new characters and weapons and upgrade your stats between runs.

    2022Action3.99 USDDeck VerifiedSingle-playerSimilar games →
  9. 9
    FTL: Faster Than Light — Steam game cover

    FTL: Faster Than Light

    Single-player alternative to Ghost Signal: A Stellaris Game — playable solo, no multiplayer required.

    This "spaceship simulation roguelike-like" allows you to take your ship and crew on an adventure through a randomly generated galaxy filled with glory and bitter defeat.

    2012StrategyIndieSimulation9.99 USDDeck PlayableSingle-playerSimilar games →
  10. 10
    EVERSPACE™ — Steam game cover

    EVERSPACE™

    Single-player alternative to Ghost Signal: A Stellaris Game — playable solo, no multiplayer required. Shares Action with Ghost Signal: A Stellaris Game.

    EVERSPACE™ combines fast-paced combat with roguelike elements, great visuals and a captivating story. It takes you on a challenging journey through an ever-changing, beautifully crafted universe full of surprises. Shoot, craft and loot your way to victory while the odds are stacked against you.

    2017ActionIndie19.99 USDDeck PlayableSingle-playerSimilar games →
  11. 11
    Eternal Starlight VR — Steam game cover

    Eternal Starlight VR

    Single-player alternative to Ghost Signal: A Stellaris Game — playable solo, no multiplayer required. Shares Action with Ghost Signal: A Stellaris Game.

    Activate your Neural Link to gain an omniscient view of the battlefield. Experience the conflict at any scale, as you plot the course that will lead your fleet to victory. Eternal Starlight is a tactical space combat game, built from the ground up for VR.

    2021ActionStrategySimulation14.99 USDSingle-playerSimilar games →