IMHO.

Free games like Astrox Imperium

Below are 9 free-to-play Steam games similar to Astrox Imperium, ranked by player overlap and content similarity. No purchase or Steam login required to view the list. Every pick is a full free-to-play title — not a demo, trial, or time-limited giveaway. imho.run's catalogue refreshes daily, so newly free or newly popular titles surface here without manual editing.

Want the full alternatives list (paid + free + Steam Deck + cheaper picks)? See the parent games like Astrox Imperium page.

Ranked picks

  1. 1
    Ultimate Custom Night — Steam game cover

    Ultimate Custom Night

    Free-to-play alternative to Astrox Imperium — no purchase or trial window. Shares Action and Indie with Astrox Imperium.

    Welcome to the ultimate FNAF mashup, featuring 50 selectable characters and custom difficulties!

    2018ActionIndieFree To PlayFreeFree to playSimilar games →
  2. 2
    The Looker — Steam game cover

    The Looker

    Free-to-play alternative to Astrox Imperium — no purchase or trial window. Shares Indie with Astrox Imperium.

    You wake up, alone, on a strangely familiar island full of puzzles that will frustrate and annoy you.

    2022IndieFreeDeck PlayableFree to playSimilar games →
  3. 3
    missed messages. — Steam game cover

    missed messages.

    Free-to-play alternative to Astrox Imperium — no purchase or trial window. Shares Indie and Simulation with Astrox Imperium.

    ‘goth gf’s iPhone’ airdrops you - accept or decline? A love/horror story about life, death, & memes.

    2019IndieSimulationFree To PlayFreeDeck PlayableFree to playSimilar games →
  4. 4
    Virtual Cottage — Steam game cover

    Virtual Cottage

    Free-to-play alternative to Astrox Imperium — no purchase or trial window. Shares Indie and Simulation with Astrox Imperium.

    Virtual Cottage gives you a comfy place to rest and be productive without any distractions. Open the game, set yourself a goal and enjoy the atmosphere.

    2020IndieSimulationFree To PlayFreeDeck PlayableFree to playSimilar games →
  5. 5
    The Lab — Steam game cover

    The Lab

    Free-to-play alternative to Astrox Imperium — no purchase or trial window.

    Welcome to The Lab, a compilation of Valve’s room-scale VR experiments set in a pocket universe within Aperture Science. Fix a robot, defend a castle, adopt a mechanical dog, and more. Still not sold? It’s free!

    2016Free To PlayFreeFree to playSimilar games →
  6. 6
    Z.A.T.O. // I Love the World and Everything In It — Steam game cover

    Z.A.T.O. // I Love the World and Everything In It

    Free-to-play alternative to Astrox Imperium — no purchase or trial window. Shares Indie and Adventure with Astrox Imperium.

    USSR, 1986. A girl goes missing in the closed city of Vorkuta-5, yet not a soul seems to be concerned. Uncover the mystery behind her disappearance and transmit your signal to the universe.

    2025IndieAdventureFree To PlayFreeDeck VerifiedFree to playSimilar games →
  7. 7
    DORONKO WANKO — Steam game cover

    DORONKO WANKO

    Free-to-play alternative to Astrox Imperium — no purchase or trial window. Shares Action and Simulation with Astrox Imperium.

    『DORONKO WANKO』 is a DORONKO Action Game. In this game, You can become a cute, innocent Pomeranian, make your master's home messy and dirty. "Will the master be angry with me?" Don't worry. Because you are a sweet doggie.

    2024ActionSimulationFree To PlayFreeFree to playSimilar games →
  8. 8
    Landfall Archives — Steam game cover

    Landfall Archives

    Free-to-play alternative to Astrox Imperium — no purchase or trial window. Shares Action and Indie with Astrox Imperium.

    Break into the Landfall Archives to steal and play previously unreleased games, demos, interactive slide shows, and even an unreleased version of Totally Accurate Battle Simulator from 2017!

    2023ActionStrategyIndieFreeFree to playSimilar games →
  9. 9
    Endless Sky — Steam game cover

    Endless Sky

    Free-to-play alternative to Astrox Imperium — no purchase or trial window. Shares Action and Indie with Astrox Imperium.

    Endless Sky is a 2D space trading and combat game inspired by the classic Escape Velocity series. Work your way up from a relatively wimpy shuttle, cargo ship, or fighter, to a highly upgraded and customized flagship or to a massive fleet of warships or freighters.

    2015ActionIndieAdventureFreeDeck PlayableFree to playSimilar games →