IMHO.

Single-player games like Megaton Rainfall

Below are 8 single-player Steam games similar to Megaton Rainfall, 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 Megaton Rainfall page.

Ranked picks

  1. 1
    Airborn — Steam game cover

    Airborn

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

    Soar through the air and decimate their fleet. Fight off a never-ending onslaught of robotic enemies by combining devastating firepower and unparalleled mobility.

    2020ActionIndie12.99 USDSingle-playerSimilar games →
  2. 2
    Meteoric VR — Steam game cover

    Meteoric VR

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

    Meteoric VR is a first-person shooter where your mission is to defend the Earth from dangerous meteors in space! The fate of the planet is now in your hands. Will you live up to the task?

    2023ActionIndie14.99 USDSingle-playerSimilar games →
  3. 3
    DarkSpase — Steam game cover

    DarkSpase

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

    Galaga meets Tie Fighter meets Elite Dangerous. A sci-fi starfighter combat sim with NASA-accurate Keplerian orbits. Voyage across the Solar System with real-time FTL. Engage Dregg swarms in dynamic PvE encounters. Outmaneuver invaders by pushing Newtonian physics to the limit at 150 m/s.

    2025ActionIndieSimulation19.99 USDSingle-playerSimilar games →
  4. 4
    Abda Redeemer: Space alien invasion — Steam game cover

    Abda Redeemer: Space alien invasion

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

    Our brave hero Abda lost his father. After his death, he remained the only one of his kind. Everyone he loved died. After the funeral, he inherited his father's old starship. After fixing the flying saucer he had inherited, Abda got ready to go. Thus began the story of Abda Redeemer.

    2021ActionIndieAdventure2.99 USDSingle-playerSimilar games →
  5. 5
    Universe Sandbox — Steam game cover

    Universe Sandbox

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

    Create & destroy on an unimaginable scale with a realistic physics-based space simulator. Explore the beauty of our universe and the fragility of our planet. Use science to bend the laws of gravity, collide planets, boil away oceans, fire epic space lasers, and customize your universe.

    2015IndieSimulationCasual29.99 USDDeck PlayableSingle-playerSimilar games →
  6. 6
    SPORE™ — Steam game cover

    SPORE™

    Single-player alternative to Megaton Rainfall — playable solo, no multiplayer required. Shares Action with Megaton Rainfall.

    Be the architect of your own universe with Spore, an exciting single-player adventure. From Single Cell to Galactic God, evolve your creature in a universe of your own creations.

    2008ActionStrategyAdventure4.99 USDSingle-playerSimilar games →
  7. 7
    STAR WARS™: Squadrons — Steam game cover

    STAR WARS™: Squadrons

    Single-player alternative to Megaton Rainfall — playable solo, no multiplayer required. Shares Action with Megaton Rainfall.

    Master the art of starfighter combat in the authentic piloting experience STAR WARS™: Squadrons. Feel the adrenaline of first-person multiplayer space dogfights alongside your squadron, and buckle up in a thrilling STAR WARS™ story.

    2020ActionSimulation3.99 USDDeck VerifiedSingle-playerSimilar games →
  8. 8
    House of the Dying Sun — Steam game cover

    House of the Dying Sun

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

    House of the Dying Sun is a tactical space shooter that puts you in the cockpit of the universe's most terrifying starfighter. Hunt the enemies of the Empire and bring ruin to their people.

    2016ActionIndieSimulation19.99 USDDeck VerifiedSingle-playerSimilar games →