IMHO.

Single-player games like Marsmare: Alienation

Below are 9 single-player Steam games similar to Marsmare: Alienation, 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 Marsmare: Alienation page.

Ranked picks

  1. 1
    Frog Fall — Steam game cover

    Frog Fall

    Single-player alternative to Marsmare: Alienation — playable solo, no multiplayer required. Shares Action and Indie with Marsmare: Alienation.

    Eskweenkleh Brahvoh, I made you to escape this labyrinthine prison. Forget their gravity; you bring your own. Embrace confusion; leap over the impossible, roll on, and, kohn ehl fahbohr dehdyohs, bounce high enough to charm the world’s corpse.

    ActionIndieAdventureSingle-playerSimilar games →
  2. 2
    Bryan's Indie Collection — Steam game cover

    Bryan's Indie Collection

    Single-player alternative to Marsmare: Alienation — playable solo, no multiplayer required. Shares Action and Indie with Marsmare: Alienation.

    Discover an indie anthology of creative games crafted during my undergrad journey. Explore multiple genres and themes in this personal collection, made solo or with small teams of up to five students. Each game tells a unique story and reflects the passion behind its creation.

    2025ActionIndie0.69 USDSingle-playerSimilar games →
  3. 3
    Ninja Noboken Episode 2 — Steam game cover

    Ninja Noboken Episode 2

    Single-player alternative to Marsmare: Alienation — playable solo, no multiplayer required. Shares Action and Indie with Marsmare: Alienation.

    A brutal 2.5D ninja action game built by a solo developer. Fast combat, precision platforming, and intense boss fights inspired by classic hardcore ninja games.

    2026ActionIndieAdventureSingle-playerSimilar games →
  4. 4
    BeatBo — Steam game cover

    BeatBo

    Single-player alternative to Marsmare: Alienation — playable solo, no multiplayer required. Shares Action and Indie with Marsmare: Alienation.

    BeatBo is a sidescroller rhythm platformer, where everything follows the beat of the music, with every level bringing a different and refreshing twist to rhythm platforming!  Follow the music, unleash your abilities to the beat with Brio and Oliy to save Rhythm City! 

    ActionIndieAdventureSingle-playerSimilar games →
  5. 5
    Koatl The Defender ULTIMATE — Steam game cover

    Koatl The Defender ULTIMATE

    Single-player alternative to Marsmare: Alienation — playable solo, no multiplayer required. Shares Action and Indie with Marsmare: Alienation.

    Descend into the hidden tunnels beneath San Luis Potosi, Mexico, in Koatl The Defender ULTIMATE, a cinematic action-adventure that blends 2.5D platforming with dynamic 3D combat. Uncover ancient secrets, wield powerful weapons, and face epic bosses in a world inspired by the Koatl comics.

    ActionIndieAdventureSingle-playerSimilar games →
  6. 6
    The Forestale — Steam game cover

    The Forestale

    Single-player alternative to Marsmare: Alienation — playable solo, no multiplayer required. Shares Action and Indie with Marsmare: Alienation.

    Help the fast like wind rabbit Alex save the world of the forest tale in the world's first platformer on the GZDoom engine. Challenge the monsters and mechanisms in the the fairy tale world after a fallen star came crashing down. Learn new skills, find tons of secrets and test your nerves!

    2019ActionIndieAdventure3.99 USDSingle-playerSimilar games →
  7. 7
    PhantomGaze : Omni-sight — Steam game cover

    PhantomGaze : Omni-sight

    Single-player alternative to Marsmare: Alienation — playable solo, no multiplayer required. Shares Action and Indie with Marsmare: Alienation.

    A 2D Metroidvania where you control two characters at once. A blind swordsman fights in melee, while a spirit archer provides ranged support. Master parry rhythms and exploit weaknesses using the bestiary. Uncover the secrets of a world built on Asian aesthetics through a stranger's eyes.

    ActionIndieAdventureSingle-playerSimilar games →
  8. 8
    Don't Tread On Cat — Steam game cover

    Don't Tread On Cat

    Single-player alternative to Marsmare: Alienation — playable solo, no multiplayer required. Shares Action and Indie with Marsmare: Alienation.

    In a post-nuclear city ruled by corporate algorithms, Pushok — a kitten with a jailbroken neural implant—must escape a high-security lab, master stealth hacking, and navigate cyberpunk slums to find his way home.

    ActionIndieAdventureSingle-playerSimilar games →
  9. 9
    Delivery Impossible — Steam game cover

    Delivery Impossible

    Single-player alternative to Marsmare: Alienation — playable solo, no multiplayer required. Shares Indie with Marsmare: Alienation.

    Delivery Impossible is an arcade truck driving simulator spiced with fun and a little bit of madness. Immerse yourself in the world of Delivery Impossible and see for yourself what it is all about - real drive, fun and madness!

    2024IndieSimulationCasual9.99 USDSingle-playerSimilar games →