IMHO.

Single-player games like Not Now, Aliens!

Below are 11 single-player Steam games similar to Not Now, Aliens!, 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 Not Now, Aliens! page.

Ranked picks

  1. 1
    Surviving Day! — Steam game cover

    Surviving Day!

    Single-player alternative to Not Now, Aliens! — playable solo, no multiplayer required. Shares Indie and Adventure with Not Now, Aliens!.

    Moddable and Hostable as a server for others to join and adventure, build, or fight. Jump into a new voxel game that is as powerful as it is fun! Experience a new level of detail and special features that keep the game interesting and fun.

    2026ActionIndieAdventure10.00 USDSingle-playerSimilar games →
  2. 2
    Death Imminent — Steam game cover

    Death Imminent

    Single-player alternative to Not Now, Aliens! — playable solo, no multiplayer required. Shares Indie and Adventure with Not Now, Aliens!.

    Explore a planetary station lost in the far reaches of the Universe as crew members awakened from cryosleep. Work together to uncover the causes of what is happening and, if you’re lucky, survive and escape from the depths of this man-made hell.

    ActionIndieAdventureSingle-playerSimilar games →
  3. 3
    2 FAST 4 YOU — Steam game cover

    2 FAST 4 YOU

    Single-player alternative to Not Now, Aliens! — playable solo, no multiplayer required. Shares Indie with Not Now, Aliens!.

    Race through challenging levels and annihilate killer bots. Master your movement to create your own fastest paths to the finish line. Use unique abilities to speedrun your way to the top of the leaderboards. Catch and banish the evil folder - your cat’s life depends on it!

    2027ActionIndieRacingSingle-playerSimilar games →
  4. 4
    The Islet & Leviathan — Steam game cover

    The Islet & Leviathan

    Single-player alternative to Not Now, Aliens! — playable solo, no multiplayer required. Shares Indie and Adventure with Not Now, Aliens!.

    A healing and wonderful ecological exploration survival game that includes elements of collection and construction.

    ActionIndieAdventureSingle-playerSimilar games →
  5. 5
    Pathless Woods — Steam game cover

    Pathless Woods

    Single-player alternative to Not Now, Aliens! — playable solo, no multiplayer required. Shares Indie and Adventure with Not Now, Aliens!.

    Embark on a cozy open-world survival journey inspired by ancient China's heritage. Gather resources, cultivate crops, build your dream home, and defend it from marauders. Team up with friends to explore and uncover a world where adventure meets serenity.

    2024StrategyIndieAdventure19.99 USDDeck PlayableSingle-playerSimilar games →
  6. 6
    VirtualSociety — Steam game cover

    VirtualSociety

    Single-player alternative to Not Now, Aliens! — playable solo, no multiplayer required. Shares Indie and Adventure with Not Now, Aliens!.

    VirtualSociety is a creative life sim where you build your own worlds, customize their residents, and design how they interact. Create the places your stories need, play as your characters, and share your worlds with friends.

    ActionIndieAdventureSingle-playerSimilar games →
  7. 7
    Factory Island — Steam game cover

    Factory Island

    Single-player alternative to Not Now, Aliens! — playable solo, no multiplayer required. Shares Indie with Not Now, Aliens!.

    Factory Island is an experimental game built to display 3D worlds inside a 2D renderer. Explore procedurally generated maps, build voxel structures, invite your friends to multiplayer, experiment with water and simple electronics, fight creatures and create mods for this game-engine project.

    2026IndieSimulationFree To PlayFreeSingle-playerSimilar games →
  8. 8
    SurvivalEXtreme — Steam game cover

    SurvivalEXtreme

    Single-player alternative to Not Now, Aliens! — playable solo, no multiplayer required. Shares Indie with Not Now, Aliens!.

    Enter a world devastated by the 2050 apocalypse. Fifty years later, humanity has returned… The war to reclaim Earth has begun, and only the bravest will be able to face the demons that now rule it. The world has fallen. Now it's your turn to rise.

    2023ActionIndieMassively Multiplayer34.99 USDSingle-playerSimilar games →
  9. 9
    iDigging — Steam game cover

    iDigging

    Single-player alternative to Not Now, Aliens! — playable solo, no multiplayer required. Shares Indie and Adventure with Not Now, Aliens!.

    In iDigging, you’ll balance treasure hunting, home improvement, and the strategy of hiding from curious neighbors and authorities. Upgrade, dig, and create your best life despite all the challenges!

    2025IndieAdventureSimulation2.99 USDDeck VerifiedSingle-playerSimilar games →
  10. 10
    Find Cats With Friends — Steam game cover

    Find Cats With Friends

    Single-player alternative to Not Now, Aliens! — playable solo, no multiplayer required. Shares Indie with Not Now, Aliens!.

    Find Cats With Friends - gather friends, search the island for 100 mischievous cats, and bring them back in this cooperative multiplayer quest!

    2024IndieSimulationCasual0.99 USDSingle-playerSimilar games →
  11. 11
    Move Together — Steam game cover

    Move Together

    Single-player alternative to Not Now, Aliens! — playable solo, no multiplayer required. Shares Indie with Not Now, Aliens!.

    A cooperative game for 5 players! Pack items into car trunks across various locations, solving puzzles. All items must fit so the doors can close. Hunt for secrets, race against time with friends or solo, and become the best!

    2025IndieSimulationCasual1.99 USDSingle-playerSimilar games →