IMHO.

Single-player games like The Tunnels of Saint Mercy Road

Below are 8 single-player Steam games similar to The Tunnels of Saint Mercy Road, 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 The Tunnels of Saint Mercy Road page.

Ranked picks

  1. 1
    Recycling Factory — Steam game cover

    Recycling Factory

    Single-player alternative to The Tunnels of Saint Mercy Road — playable solo, no multiplayer required. Shares Action and Indie with The Tunnels of Saint Mercy Road.

    Your goal in this horror game is simple: collect bodies, get rid of them, and find a way out. But in this dark place, everything is dangerous. Solve puzzles and escape the fear that surrounds you.

    2024ActionIndieAdventure8.99 USDSingle-playerSimilar games →
  2. 2
    Echoes of Dread — Steam game cover

    Echoes of Dread

    Single-player alternative to The Tunnels of Saint Mercy Road — playable solo, no multiplayer required. Shares Action and Indie with The Tunnels of Saint Mercy Road.

    Echoes Of Dread is a first-person psychological horror game. Explore the mansion, solve puzzles, and uncover the secrets hidden within. Prepare for unexpected encounters with terrifying entities.

    2024ActionIndieAdventure5.99 USDSingle-playerSimilar games →
  3. 3
    My Dear Sister — Steam game cover

    My Dear Sister

    Single-player alternative to The Tunnels of Saint Mercy Road — playable solo, no multiplayer required. Shares Action and Indie with The Tunnels of Saint Mercy Road.

    My Dear Sister is a first-person story-driven mystery-horror game with puzzles and exploration experience. The game focuses on the secrets of Fellows Family and the story of twin sisters Alice and Astrid.

    2022ActionIndie1.99 USDSingle-playerSimilar games →
  4. 4
    The Door in the Basement — Steam game cover

    The Door in the Basement

    Single-player alternative to The Tunnels of Saint Mercy Road — playable solo, no multiplayer required. Shares Indie with The Tunnels of Saint Mercy Road.

    The Door in the Basement is an atmospheric pixelated horror game set in a mysterious subterranean world.

    2021IndieAdventure10.99 USDDeck PlayableSingle-playerSimilar games →
  5. 5
    Rodland of Pipes — Steam game cover

    Rodland of Pipes

    Single-player alternative to The Tunnels of Saint Mercy Road — playable solo, no multiplayer required. Shares Action and Indie with The Tunnels of Saint Mercy Road.

    Crawl through pipes, navigate the maze, listen carefully and get out before Rodland finds you.

    2024ActionIndie8.99 USDSingle-playerSimilar games →
  6. 6
    Supernormal — Steam game cover

    Supernormal

    Single-player alternative to The Tunnels of Saint Mercy Road — playable solo, no multiplayer required. Shares Action and Indie with The Tunnels of Saint Mercy Road.

    Inspired by Allison Road. SUPERNORMAL is a psychological horror game set in a seemingly ordinary apartment harboring dark secrets. Play as Detective Wyatt, tasked with unravelling the disappearance of Masato Sakamoto's daughter. Search for clues and unravel the sinister truth.

    2024ActionIndieAdventure7.99 USDSingle-playerSimilar games →
  7. 7
    SUFFOCATE — Steam game cover

    SUFFOCATE

    Single-player alternative to The Tunnels of Saint Mercy Road — playable solo, no multiplayer required. Shares Action and Indie with The Tunnels of Saint Mercy Road.

    《SUFFOCATE》is a realistic 3D first-person survival horror game. The plot revolves around family relationships, cult, and the greed that permeates human nature. The game doesn't shy away from violence, gore, and faith in this one-of-a-kind survival horror experience, Taiwanese style.

    2025ActionIndieAdventure16.99 USDSingle-playerSimilar games →
  8. 8
    Holy Purge : Exorcist — Steam game cover

    Holy Purge : Exorcist

    Single-player alternative to The Tunnels of Saint Mercy Road — playable solo, no multiplayer required. Shares Action and Indie with The Tunnels of Saint Mercy Road.

    Holy Purge is a co-op horror game where players play as priests who exorcise demons in various scenarios.

    2022ActionIndie9.99 USDSingle-playerSimilar games →