IMHO.

Games like Not My Son

If Not My Son is your kind of game, the closest matches are NULL, What Happened to Lily? and Still With Me — picked from the ranked list below. Each pick is ranked by what players of this game also play, shared genres and tags, and review-mined similarity — not a generic popularity list.

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About Not My Son: A psychological horror game where a stepfather is left alone with a disturbing child. Explore a quiet house, face growing nightmares, and piece together the truth behind the boy’s behavior.

2026IndieAdventureWindowsby Antantic
Not My Son — Steam game cover

Players who liked Not My Son also play

Steam players who put hours into Not My Son also tend to own these titles — a signal called collaborative filtering. imho.run cross-references millions of library ownership patterns to surface games whose real audiences overlap, regardless of whether their genre tags match.

  1. NULL

    WHY THIS

    Top pick for Not My Son fans by collaborative filtering across millions of Steam libraries. Shares Indie and Adventure with Not My Son.

    It's 1998. You're trapped in an eerie neighborhood where nothing is as it seems. Unravel a psychological horror story of grief, obsession, and love. Solve puzzles, meet neighbors, and make choices as you uncover the truth behind a grieving father who created a perfect world, frozen in time forever.

    2026IndieAdventureSteam ↗
  2. What Happened to Lily?

    WHY THIS

    Second-strongest match for Not My Son fans by collaborative filtering across millions of Steam libraries. Shares Indie and Adventure with Not My Son.

    What Happened to Lily? Is a real-time first-person horror game. Discover the secrets and spooky truths behind the mysterious event at Miller Farm.

    2025IndieAdventureCasual3.99 USDSteam ↗
  3. Still With Me

    WHY THIS

    Third-strongest match for Not My Son fans by collaborative filtering across millions of Steam libraries. Shares Indie and Adventure with Not My Son.

    A psychological horror experience about returning to a place that never forgot you.

    IndieAdventureSteam ↗
  4. Reflection

    WHY THIS

    Ranked #4 for Not My Son fans by collaborative filtering across millions of Steam libraries. Shares Indie with Not My Son.

    You woke up in some basement and don't remember who you are or how you ended up here... But what you do know is that you need to get out of here...

    2025Indie2.39 USDSteam ↗
  5. Clink

    WHY THIS

    Ranked #5 for Not My Son fans by collaborative filtering across millions of Steam libraries. Shares Indie and Adventure with Not My Son.

    You are a lonely woman, secluded in a house with your cat... and the secrets of the past. What hides within your mind — illness, or something otherworldly? Nightmares and reality intertwine… everything is so foggy. Do you have the courage to remember what happened?

    2025IndieAdventureSimulation4.99 USDSteam ↗
  6. Luto

    WHY THIS

    Ranked #6 for Not My Son fans by collaborative filtering across millions of Steam libraries. Shares Indie and Adventure with Not My Son.

    Luto is a psychological horror experience where you take on the role of someone unable to leave their home. Every attempt to escape will lead you deeper into the unknown, where nothing is as it seems and everything will test your senses.

    2025IndieAdventure19.99 USDDeck PlayableSteam ↗
  7. The Stalked

    WHY THIS

    Ranked #7 for Not My Son fans by collaborative filtering across millions of Steam libraries. Shares Indie and Adventure with Not My Son.

    Escaped from Liam's obsession, Kate seeks refuge in her grandpa's mansion. Strange occurrences raise questions about Liam's presence or another figure. Unraveling mysterious letters, Kate embarks on a journey, seeking peace.

    2024IndieAdventure2.99 USDDeck PlayableSteam ↗
  8. The Signifier Director's Cut

    WHY THIS

    Ranked #8 for Not My Son fans by collaborative filtering across millions of Steam libraries. Shares Indie and Adventure with Not My Son.

    This story-driven adventure follows a mystery of death and despair from reality into the surreal realms of objective memories and subjective experiences. Search the mind, solve puzzles, and unravel the dark truth in this psychological thriller.

    2020IndieAdventure19.99 USDDeck PlayableSteam ↗

Free alternatives

Free-to-play games that recommended players of this title also tend to enjoy.

  1. Doki Doki Literature Club!

    WHY THIS

    Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Indie with Not My Son.

    The Literature Club is full of cute girls! Will you write the way into their heart? This game is not suitable for children or those who are easily disturbed.

    2017IndieFree To PlayCasualFreeDeck PlayableSteam ↗
  2. Life is Strange - Episode 1

    WHY THIS

    Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Adventure with Not My Son.

    Episode 1 now FREE! Life is Strange is an award-winning and critically acclaimed episodic adventure game that allows the player to rewind time and affect the past, present and future.

    2015ActionAdventureFreeDeck PlayableSteam ↗
  3. Ultimate Custom Night

    WHY THIS

    Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Indie with Not My Son.

    Welcome to the ultimate FNAF mashup, featuring 50 selectable characters and custom difficulties!

    2018ActionIndieFree To PlayFreeSteam ↗
  4. ENA: Dream BBQ

    WHY THIS

    Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Indie and Adventure with Not My Son.

    Experience surreal environments and inexplicable characters as ENA in a new wild world.

    2025IndieAdventureFreeDeck VerifiedSteam ↗
  5. The Murder of Sonic the Hedgehog

    WHY THIS

    Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Indie with Not My Son.

    Sonic the Hedgehog...was murdered!? Get to the bottom of the mystery in this brand-new adventure!

    2023IndieSimulationFree To PlayFreeDeck PlayableSteam ↗
  6. Indigo Park: Chapter 1

    WHY THIS

    Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Indie and Adventure with Not My Son.

    Explore the abandoned childhood wonder of Indigo Park! Guided by Rambley the Raccoon, help restore power to the destroyed amusement park while you run from the reason it shut down.

    2024ActionIndieAdventureFreeDeck PlayableSteam ↗
  7. STRAFTAT

    WHY THIS

    Free-to-play pick from the same recommendation pool — no purchase to try it.

    STRAFTAT is a 1v1/2v2 ONLINE first person SHOOTER with quick rounds in over 350 MAPS ; Including all WEAPONS, proximity chat and 4 players FFA.

    2024ActionFreeDeck PlayableSteam ↗
  8. The Looker

    WHY THIS

    Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Indie with Not My Son.

    You wake up, alone, on a strangely familiar island full of puzzles that will frustrate and annoy you.

    2022IndieFreeDeck PlayableSteam ↗

Frequently asked about Not My Son

What games are most similar to Not My Son?
Based on Steam play patterns and shared genres/tags, the games most often recommended alongside Not My Son are NULL, What Happened to Lily?, Still With Me.
Who developed Not My Son?
Not My Son was developed by Antantic.

imho.run ranks Steam game alternatives using a mix of collaborative filtering (ALS / iALS / EASE / LightGCN), content scoring over genres, categories, Steam tags, developers, and publishers, plus AI-extracted vibes mined from review text. The page above is generated in seed mode anchored on Not My Son.

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