IMHO.

Single-player games like Hero Boy

Below are 9 single-player Steam games similar to Hero Boy, 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 Hero Boy page.

Ranked picks

  1. 1
    Killing Sun / 抗日大刀队:日军总部 — Steam game cover

    Killing Sun / 抗日大刀队:日军总部

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

    "Killing Sun" is an FPS game you do not want to miss if you are a fan of "Wolfenstein 3D". If you want to shoot devils, just play this game! No need to change magazines! No recoil! The operation is simple! Now! Take your Da Dao! Massacre in 27 levels of adrenaline surge! Let the devils all die!

    2020ActionIndieAdventure6.99 USDSingle-playerSimilar games →
  2. 2
    WiP — Steam game cover

    WiP

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

    無機質で大きな腕を持つ主人公を操り、最奥に待つボスのもとへと向かう2Dアクションゲーム!目指せハイスコア!

    2020ActionIndie0.99 USDSingle-playerSimilar games →
  3. 3
    DownTheDead — Steam game cover

    DownTheDead

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

    DownTheDead is a zombie horror first-person shooter that takes place in a once-secret government research facility. Get armed, and get out alive!

    2022ActionIndie10.99 USDSingle-playerSimilar games →
  4. 4
    Horrorillo Brainrotillo — Steam game cover

    Horrorillo Brainrotillo

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

    When Tralalero turns from Tralala to AAAAAAAA! Brave the haunted Sahur mansion, where shadows hide zombini memini lurking to hunt you. Solve puzzles, escape doom, and beware: they're not just rotting your brain—they're coming for what's left.

    2025ActionIndie4.99 USDSingle-playerSimilar games →
  5. 5
    Missing Persons — Steam game cover

    Missing Persons

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

    Missing Persons is a horror-survival game that you play as Calvin to survive against the scientist who kidnapped you to run tests on you.

    2022ActionIndieAdventure4.99 USDSingle-playerSimilar games →
  6. 6
    Arrogation: Unlight of Day — Steam game cover

    Arrogation: Unlight of Day

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

    Arrogation: Unlight of Day is a psychological horror game set in World War II. You will play as a lone reporter searching for his lost family in an abandoned village from 80s China. Beyond darkness, you will find nightmarish creatures and secrets from the long lost Imperial Japanese Army.

    2023IndieAdventureRPG19.99 USDSingle-playerSimilar games →
  7. 7
    Bouncy Bob — Steam game cover

    Bouncy Bob

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

    Simple experimental one button local multiplayer game. Perfect for parties with friends (up to 4 people on 1 keyboard). It also has a single mode in which you jump on platforms and use double jumps and multiple power-ups to defeat the army of the undead!

    2017ActionIndieCasual4.99 USDSingle-playerSimilar games →
  8. 8
    One Way To Die — Steam game cover

    One Way To Die

    Single-player alternative to Hero Boy — playable solo, no multiplayer required.

    After waking from a terrifying dream of your own untimely death, you attempt to make your way to the Finnigan Brothers' Fun Park for its last day then back home again. It's like playing Russian roulette with five chambers loaded, but more frustrating.

    2015AdventureFree To PlayFreeSingle-playerSimilar games →
  9. 9
    Syntherapy — Steam game cover

    Syntherapy

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

    If an AI were sentient, how would you know if they were malfunctioning, or experiencing a mental health problem? A story-rich game that explores mental health and AI ethics in the form of therapy sessions with a sentient AI.

    2020IndieSimulationCasual14.99 USDSingle-playerSimilar games →
Single-player games like Hero Boy — 9 solo picks · imho.run