IMHO.

Single-player games like Marry a Deep One: Innsmouth Simulator

Below are 9 single-player Steam games similar to Marry a Deep One: Innsmouth Simulator, 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 Marry a Deep One: Innsmouth Simulator page.

Ranked picks

  1. 1
    Within the Inner Palace — Steam game cover

    Within the Inner Palace

    Single-player alternative to Marry a Deep One: Innsmouth Simulator — playable solo, no multiplayer required. Shares Simulation with Marry a Deep One: Innsmouth Simulator.

    Play as an official’s daughter entering the imperial palace as a consort. Build relationships, shape your family’s fate, speak freely with memory-driven AI characters, navigate favor and political intrigue, or overturn the order of the court and pursue an entirely different ending.

    IndieSimulationRPGSingle-playerSimilar games →
  2. 2
    Maximilien — A Psychological Horror Interactive Novel — Steam game cover

    Maximilien — A Psychological Horror Interactive Novel

    Single-player alternative to Marry a Deep One: Innsmouth Simulator — playable solo, no multiplayer required. Shares Adventure with Marry a Deep One: Innsmouth Simulator.

    A psychological horror interactive novel, Boston 1926. Explore, investigate, lose your footing. Your choices shape a branching story where your mental state governs what you see and which paths open to you. 4 intersecting routes, 12 possible endings, 15 to 20 hours of play.

    2026IndieAdventureRPGSingle-playerSimilar games →
  3. 3
    What Have I Become? — Steam game cover

    What Have I Become?

    Single-player alternative to Marry a Deep One: Innsmouth Simulator — playable solo, no multiplayer required. Shares Adventure and Simulation with Marry a Deep One: Innsmouth Simulator.

    Live an entire life through the personality you build. Every choice strengthens, weakens or transforms cards in your deck and that changes which choices become possible. Replay different lives, endings and identities, see what you became in your final Life Report. No correct answer has been filed.

    IndieAdventureSimulationSingle-playerSimilar games →
  4. 4
    Judge SIM — Steam game cover

    Judge SIM

    Single-player alternative to Marry a Deep One: Innsmouth Simulator — playable solo, no multiplayer required. Shares Adventure and Simulation with Marry a Deep One: Innsmouth Simulator.

    Step into the role of a judge and decide the fate of every case. Listen to witnesses, examine evidence, uncover contradictions, and deliver verdicts that will change lives. Every decision matters in this tense courtroom simulation full of twists.

    2026StrategyAdventureSimulation7.99 USDSingle-playerSimilar games →
  5. 5
    Scarlet Hollow — Steam game cover

    Scarlet Hollow

    Single-player alternative to Marry a Deep One: Innsmouth Simulator — playable solo, no multiplayer required. Shares Adventure with Marry a Deep One: Innsmouth Simulator.

    Your aunt’s dead, your cousin hates you, and you’re stuck in the dead-end town of Scarlet Hollow. Choose your path through a branching narrative so dense that you'll see less than 1/5 of the game on a single playthrough. You won't be able to save everyone. Good luck, and welcome home.

    2021IndieAdventureRPG24.99 USDDeck VerifiedSingle-playerSimilar games →
  6. 6
    Politics The Game — Steam game cover

    Politics The Game

    Single-player alternative to Marry a Deep One: Innsmouth Simulator — playable solo, no multiplayer required. Shares Adventure and Simulation with Marry a Deep One: Innsmouth Simulator.

    Become a parliamentarian, create a powerful party, and lead it to victory in this humorous adventure game. Manage your popularity and dignity, use unique powers, and navigate a storyline inspired by current events.

    2025StrategyAdventureSimulation9.99 USDDeck VerifiedSingle-playerSimilar games →
  7. 7
    Booth: A Dystopian Adventure — Steam game cover

    Booth: A Dystopian Adventure

    Single-player alternative to Marry a Deep One: Innsmouth Simulator — playable solo, no multiplayer required. Shares Adventure and Simulation with Marry a Deep One: Innsmouth Simulator.

    The year is 2036. In this famine-riddled world, food-centric sovereignty has been established. Living alone inside a food-inspection booth, you are striving to find truth and peace beyond the borderline.

    2020IndieAdventureSimulation9.99 USDDeck PlayableSingle-playerSimilar games →
  8. 8
    Cabin Fever — Steam game cover

    Cabin Fever

    Single-player alternative to Marry a Deep One: Innsmouth Simulator — playable solo, no multiplayer required. Shares Adventure and Simulation with Marry a Deep One: Innsmouth Simulator.

    An off-grid cabin. A tech-savvy loner. One ray of sunshine in a bleak, ruined world. Cabin Fever is a slice-of-life visual novel with meaningful player choices, multiple endings to explore, and a story that will touch your heart.

    2021IndieAdventureSimulation9.99 USDDeck PlayableSingle-playerSimilar games →
  9. 9
    Souls Inferno — Steam game cover

    Souls Inferno

    Single-player alternative to Marry a Deep One: Innsmouth Simulator — playable solo, no multiplayer required. Shares Adventure with Marry a Deep One: Innsmouth Simulator.

    Enter a cursed realm, defeat demonic knights, collect souls, and shape your build as you uncover a deeply interconnected world.

    2026IndieAdventureRPG3.99 USDSingle-playerSimilar games →