IMHO.

Single-player games like House of Necrosis

Below are 13 single-player Steam games similar to House of Necrosis, 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 House of Necrosis page.

Ranked picks

  1. 1
    Ad Iterum — Steam game cover

    Ad Iterum

    Single-player alternative to House of Necrosis — playable solo, no multiplayer required. Shares RPG with House of Necrosis.

    Ad Iterum is a turn-based top-down 2D roguelike set in a decaying, ever-shifting world. Flesh is fragile, but you can hack it. Enhance your body, embrace mutations, or form ancient blood pacts. Descend into the depths, scavenge what’s left of humanity, and crawl back...if you can. Kill. Die. Repeat.

    2026ActionStrategyIndieSingle-playerSimilar games →
  2. 2
    Immortal Wayfarer — Steam game cover

    Immortal Wayfarer

    Single-player alternative to House of Necrosis — playable solo, no multiplayer required. Shares RPG with House of Necrosis.

    Immortal Wayfarer is an endlessly replayable yet forgiving dungeon crawler RPG. Enemies only move when you do, you can rewind each step, and easily recover lost gear. Restore peace on your terms!

    StrategyIndieAdventureSingle-playerSimilar games →
  3. 3
    ホロダンジョン 博衣こよりとホロウライブ in ホンシャタワー — Steam game cover

    ホロダンジョン 博衣こよりとホロウライブ in ホンシャタワー

    Single-player alternative to House of Necrosis — playable solo, no multiplayer required. Shares RPG with House of Necrosis.

    Wonderful maze “HoloDungeon” changes form with each challenge—within it lurks Hollow, beings not unlike Holomen. To rescue her snatched friends and make special Live a success, Hakui Koyori tries an unknown adventure! Roguelike RPG where you play using wisdom and brains remain even after down.

    2026IndieRPGEarly Access12.99 USDDeck VerifiedSingle-playerSimilar games →
  4. 4
    Absorber: Absorb Adapt Survive — Steam game cover

    Absorber: Absorb Adapt Survive

    Single-player alternative to House of Necrosis — playable solo, no multiplayer required. Shares RPG with House of Necrosis.

    Consume enemies. Steal their powers. Survive the grid. A hardcore tactical roguelike on a 7×7 corrupted mainframe with 60+ synergistic programs. Permadeath. Every run matters.

    2026StrategyIndieRPGSingle-playerSimilar games →
  5. 5
    Undergeon's Pilgrims — Steam game cover

    Undergeon's Pilgrims

    Single-player alternative to House of Necrosis — playable solo, no multiplayer required. Shares RPG with House of Necrosis.

    Undergeon's Pilgrims is a fantasy roguelite game with rpg elements. Create group of adventurers, the Pilgrims. Accumulate treasure, face off perils and go down the Undergeon for glory !

    2024IndieAdventureRPG5.99 USDSingle-playerSimilar games →
  6. 6
    ByteRogue — Steam game cover

    ByteRogue

    Single-player alternative to House of Necrosis — playable solo, no multiplayer required.

    ByteRogue is a minimalist turn-based puzzle-tactics roguelike where you play as a wizard-thief. Use spells to outsmart security robots, manipulate the environment, and steal as much treasure as you can in each daring heist.

    2025StrategyIndie2.55 USDSingle-playerSimilar games →
  7. 7
    Dungeon Drafters — Steam game cover

    Dungeon Drafters

    Single-player alternative to House of Necrosis — playable solo, no multiplayer required. Shares RPG with House of Necrosis.

    Dungeon Drafters is a mystery dungeon adventure set in a world where magic is cards, and cards are magic. Explore ancient ruins, loot rare cards and employ clever combos to defeat your foes and build the legendary spell deck that could save the world.

    2023StrategyIndieRPG14.99 USDDeck VerifiedSingle-playerSimilar games →
  8. 8
    Eye of Khaos — Steam game cover

    Eye of Khaos

    Single-player alternative to House of Necrosis — playable solo, no multiplayer required. Shares RPG with House of Necrosis.

    Slay your enemies in this sword and sorcery roguelike! Ancient dungeons, fallen ruins and cyclopean towers and their primordial denizens present a tactical and deadly challenge that can only be overcome by the most resourceful heroes.

    2026RPGSingle-playerSimilar games →
  9. 9
    Resident Evil — Steam game cover

    Resident Evil

    Single-player alternative to House of Necrosis — playable solo, no multiplayer required.

    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
    Parasite — Steam game cover

    Parasite

    Single-player alternative to House of Necrosis — playable solo, no multiplayer required. Shares RPG with House of Necrosis.

    This is a roguelike open-world sandbox survival horror set in a modern city. Play as an --redacted-- parasite, possess human hosts, exploit and evolve them to help you survive in a hostile world, all to find out your one true purpose.

    2022IndieRPGEarly Access9.99 USDDeck PlayableSingle-playerSimilar games →
  11. 11
    The Wanderer — Steam game cover

    The Wanderer

    Single-player alternative to House of Necrosis — playable solo, no multiplayer required.

    Enter a dark wasteland and fight mutants to survive.

    2019StrategyAdventure0.99 USDDeck PlayableSingle-playerSimilar games →
  12. 12
    Withering Rooms — Steam game cover

    Withering Rooms

    Single-player alternative to House of Necrosis — playable solo, no multiplayer required. Shares RPG with House of Necrosis.

    Withering Rooms is a challenging 2.5D horror RPG set in a procedurally generated Victorian mansion that changes each night. Explore Mostyn House to collect the perfect items for your build and face a huge cast of overgrown undead, invisible ghosts, devious witches, and more.

    2024ActionAdventureRPG24.99 USDDeck PlayableSingle-playerSimilar games →
  13. 13
    HackHub - Ultimate Hacker Simulator — Steam game cover

    HackHub - Ultimate Hacker Simulator

    Single-player alternative to House of Necrosis — playable solo, no multiplayer required.

    Unravel cyber secrets and foil mass surveillance as a skilled hacker in Hackhub. Challenge authority, rewrite the rules, and emerge as the ultimate digital rebel.

    2026StrategyIndieSimulation11.99 USDDeck PlayableSingle-playerSimilar games →