IMHO.

Single-player games like Alien Apocalypse

Below are 9 single-player Steam games similar to Alien Apocalypse, 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 Alien Apocalypse page.

Ranked picks

  1. 1
    7 Days to Die — Steam game cover

    7 Days to Die

    Single-player alternative to Alien Apocalypse — playable solo, no multiplayer required. Shares Action and Indie with Alien Apocalypse.

    7 Days to Die is an open-world game that is a unique combination of first-person shooter, survival horror, tower defense, and role-playing games. Play the definitive zombie survival sandbox RPG that came first. Navezgane awaits!

    2024ActionStrategyIndie44.99 USDDeck VerifiedSingle-playerSimilar games →
  2. 2
    Project Zomboid — Steam game cover

    Project Zomboid

    Single-player alternative to Alien Apocalypse — playable solo, no multiplayer required. Shares Indie and Simulation with Alien Apocalypse.

    Project Zomboid is the ultimate in zombie survival. Alone or in MP: you loot, build, craft, fight, farm and fish in a struggle to survive. A hardcore RPG skillset, a vast map, massively customisable sandbox and a cute tutorial raccoon await the unwary. So how will you die? All it takes is a bite..

    2013IndieSimulationRPG19.99 USDDeck VerifiedSingle-playerSimilar games →
  3. 3
    The Forest — Steam game cover

    The Forest

    Single-player alternative to Alien Apocalypse — playable solo, no multiplayer required. Shares Action and Indie with Alien Apocalypse.

    As the lone survivor of a passenger jet crash, you find yourself in a mysterious forest battling to stay alive against a society of cannibalistic mutants. Build, explore, survive in this terrifying first person survival horror simulator.

    2018ActionIndieAdventure19.99 USDDeck PlayableSingle-playerSimilar games →
  4. 4
    Green Hell — Steam game cover

    Green Hell

    Single-player alternative to Alien Apocalypse — playable solo, no multiplayer required. Shares Action and Indie with Alien Apocalypse.

    Plunge into the open-world survival simulation set in the extreme conditions of the uncharted Amazon jungle. Use real-life survival techniques to craft, hunt, fight, and gather resources, set a makeshift shelter, or raise a fortress. Survive alone or team up with your friends and challenge the jungle together.

    2019ActionIndieAdventure24.99 USDDeck VerifiedSingle-playerSimilar games →
  5. 5
    Don't Starve Together — Steam game cover

    Don't Starve Together

    Single-player alternative to Alien Apocalypse — playable solo, no multiplayer required. Shares Action and Indie with Alien Apocalypse.

    Fight, Farm, Build and Explore Together in the standalone multiplayer expansion to the uncompromising wilderness survival game, Don't Starve.

    2016ActionStrategyIndie14.99 USDDeck VerifiedSingle-playerSimilar games →
  6. 6
    State of Decay 2: Juggernaut Edition — Steam game cover

    State of Decay 2: Juggernaut Edition

    Single-player alternative to Alien Apocalypse — playable solo, no multiplayer required. Shares Action and Simulation with Alien Apocalypse.

    The dead have risen and civilization has fallen. Now it's up to you to gather survivors, scavenge for resources and build a community in a post-apocalyptic world – a world where you define what it means to survive in this ultimate zombie survival simulation.

    2020ActionSimulationRPG29.99 USDDeck PlayableSingle-playerSimilar games →
  7. 7
    Terraria — Steam game cover

    Terraria

    Single-player alternative to Alien Apocalypse — playable solo, no multiplayer required. Shares Action and Indie with Alien Apocalypse.

    Dig, fight, explore, build! Nothing is impossible in this action-packed adventure game. Four Pack also available!

    2011ActionIndieAdventure9.99 USDDeck VerifiedSingle-playerSimilar games →
  8. 8
    Voidtrain — Steam game cover

    Voidtrain

    Single-player alternative to Alien Apocalypse — playable solo, no multiplayer required. Shares Action and Indie with Alien Apocalypse.

    Become a crew member of an Interdimensional Express Train! Discover a new world full of mysterious creatures, enemies and places. Upgrade and customize your train, gather new materials and build better weapons. Play solo or online сo-op with up to 4 people.

    2025ActionIndieAdventure29.99 USDDeck PlayableSingle-playerSimilar games →
  9. 9
    Death's Life — Steam game cover

    Death's Life

    Single-player alternative to Alien Apocalypse — playable solo, no multiplayer required. Shares Indie with Alien Apocalypse.

    Now you’re the new apprentice for Death. And it's your job to help gather souls. Only thing is, you can't just go and kill people to get the souls, it has to look natural. Like an accident. And that means setting up bottles, knives, brooms, and other regular objects in such a way as to create deadly chain reactions.

    2016IndieCasual2.99 USDSingle-playerSimilar games →