IMHO.

Single-player games like Plastomorphosis

Below are 15 single-player Steam games similar to Plastomorphosis, 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 Plastomorphosis page.

Ranked picks

  1. 1
    Hollow Stories: Lockdown — Steam game cover

    Hollow Stories: Lockdown

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

    A neo-retro survival horror noir game where you explore, solve puzzles, and fight to survive in a city ruled by corruption and cults.

    ActionIndieAdventureSingle-playerSimilar games →
  2. 2
    Haunted Bloodlines — Steam game cover

    Haunted Bloodlines

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

    Every family has secrets. This house knows yours. Haunted Bloodlines is a first-person psychological horror game where the halls shift, the walls breathe, and the mansion has been waiting for you your whole life.

    ActionIndieAdventureSingle-playerSimilar games →
  3. 3
    A Short Tale of Solitude — Steam game cover

    A Short Tale of Solitude

    Single-player alternative to Plastomorphosis — playable solo, no multiplayer required. Shares Adventure with Plastomorphosis.

    A Short Tale of Solitude is an adventure horror game, combining exploration, puzzles and survival where the gameplay is focused on fear mechanics.

    AdventureSingle-playerSimilar games →
  4. 4
    ZHITEN — Steam game cover

    ZHITEN

    Single-player alternative to Plastomorphosis — playable solo, no multiplayer required. Shares Indie and Adventure with Plastomorphosis.

    Some villages aren't just abandoned, they are cursed. Zhiten, a victim of clashing cults, awakens from its slumber with Nikolay's return. While Nikolay searches for traces of the past, he will be forced to meet the village's new owners.

    2026IndieAdventureSingle-playerSimilar games →
  5. 5
    Mortal Meal — Steam game cover

    Mortal Meal

    Single-player alternative to Plastomorphosis — playable solo, no multiplayer required. Shares Indie and Adventure with Plastomorphosis.

    Play as an untethered spirit, collecting fragments of your past while fleeing a cryptic force looking to consume your soul. Explore and survive an increasingly nightmarish world. Who are you? How will you avoid the harvest of your soul? What will you uncover with the time you have left?

    2023IndieAdventure8.99 USDSingle-playerSimilar games →
  6. 6
    Broken Lights — Steam game cover

    Broken Lights

    Single-player alternative to Plastomorphosis — playable solo, no multiplayer required. Shares Indie and Adventure with Plastomorphosis.

    The holiday spirit is broken. On Christmas Eve, 10-year-old Seth's guilt manifests as the legendary criature. Explore a claustrophobic, home twisted by paranoia. Can you survive the warped echoes of your family and burn the evidence of your sin before your heart stops?

    IndieAdventureSingle-playerSimilar games →
  7. 7
    Connection: The Nightmare Within — Steam game cover

    Connection: The Nightmare Within

    Single-player alternative to Plastomorphosis — playable solo, no multiplayer required. Shares Action and Adventure with Plastomorphosis.

    Inspired by the classics such as Resident Evil, Silent Hill and Alone In the Dark: Detective Stone investigates a shadow conspiracy. Explore atmospheric levels, fight monsters, and solve puzzles. Unravel a story of twists and turns. Choose classic fixed camera, or over-the-shoulder.

    2024ActionAdventure7.99 USDDeck PlayableSingle-playerSimilar games →
  8. 8
    TRAUMA Broken Paradise — Steam game cover

    TRAUMA Broken Paradise

    Single-player alternative to Plastomorphosis — playable solo, no multiplayer required. Shares Action and Adventure with Plastomorphosis.

    A childhood stolen by brutality, a mind shattered by loss... In the ruins of a forgotten past, Sophia Markwell searches for the truth—will the ghosts of her parents’ murder lead her to redemption, or deeper into madness? And who’s Catherine?

    2023ActionAdventure16.99 USDDeck VerifiedSingle-playerSimilar games →
  9. 9
    Resident Evil — Steam game cover

    Resident Evil

    Single-player alternative to Plastomorphosis — playable solo, no multiplayer required. Shares Action and Adventure with Plastomorphosis.

    The game that defined the survival-horror genre is back! Check out the remastered HD version of Resident Evil.

    2015ActionAdventure19.99 USDDeck VerifiedSingle-playerSimilar games →
  10. 10
    SILENT HILL 2 — Steam game cover

    SILENT HILL 2

    Single-player alternative to Plastomorphosis — playable solo, no multiplayer required. Shares Action and Adventure with Plastomorphosis.

    Investigating a letter from his late wife, James returns to where they made so many memories - Silent Hill. What he finds is a ghost town, prowled by disturbing monsters and cloaked in deep fog. Confront the monsters, solve puzzles, and search for traces of your wife in this remake of SILENT HILL 2.

    2024ActionAdventure34.99 USDSingle-playerSimilar games →
  11. 11
    Half-Life 2 — Steam game cover

    Half-Life 2

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

    Reawakened from stasis in the occupied metropolis of City 17, Gordon Freeman is joined by Alyx Vance as he leads a desperate human resistance. Experience the landmark first-person shooter packed with immersive world-building, boundary-pushing physics, and exhilarating combat.

    2004Action9.99 USDDeck VerifiedSingle-playerSimilar games →
  12. 12
    Re.Surs — Steam game cover

    Re.Surs

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

    Re.Surs is a futuristic story-driven 2D side-scrolling shooter featuring unique heroes with various abilities. Shoot, dash, kick and hack monsters as you try to uncover the secrets of the Re.Surs dark energy and demons' interdimensional invasion.

    2021ActionIndieAdventure7.99 USDSingle-playerSimilar games →
  13. 13
    Forrader Hero — Steam game cover

    Forrader Hero

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

    Forrader Hero – turn-based game with roguelike elements where heroes can’t step back and must fight through the end to save their soul in ‘Forgotten Proto.World’ fighting hordes of monsters, undead creatures, and their overlords.

    2023IndieRPGCasual3.99 USDSingle-playerSimilar games →
  14. 14
    Snowsquall Grip — Steam game cover

    Snowsquall Grip

    Single-player alternative to Plastomorphosis — playable solo, no multiplayer required. Shares Indie and Adventure with Plastomorphosis.

    Escape the snowy nightmare or be trapped forever — your call.

    2024IndieAdventure2.99 USDSingle-playerSimilar games →
  15. 15
    Synthesis of Corruption — Steam game cover

    Synthesis of Corruption

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

    Emergency Protocol activated: Dark Energy Particle Synthesis failed. Now you – late and alone – must navigate a facility where science and sanity have collapsed. Face entities born from the corruption of dark energy in this atmospheric FPS-horror hybrid, where human ambition meets primal terror.

    2026ActionIndie8.99 USDDeck PlayableSingle-playerSimilar games →