IMHO.

Single-player games like Secrets of the Dark Fortress

Below are 9 single-player Steam games similar to Secrets of the Dark Fortress, 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 Secrets of the Dark Fortress page.

Ranked picks

  1. 1
    Tears of Vanfell — Steam game cover

    Tears of Vanfell

    Single-player alternative to Secrets of the Dark Fortress — playable solo, no multiplayer required. Shares Action and Indie with Secrets of the Dark Fortress.

    Your life begins anew in front of an imposing mountain... Climb and explore it with a wide cast of characters in this dungeon crawler RPG with up to four player Co-op.

    ActionIndieAdventureSingle-playerSimilar games →
  2. 2
    Heaven Crawler — Steam game cover

    Heaven Crawler

    Single-player alternative to Secrets of the Dark Fortress — playable solo, no multiplayer required. Shares Action and Indie with Secrets of the Dark Fortress.

    Explore The Womb, a forgotten man-made tower built to reach the heavens. Wield Mechanical Arms to overcome deadly enemies and carve your path upward on a deeply personal journey. And remember: Bring her back.

    2027ActionIndieAdventureSingle-playerSimilar games →
  3. 3
    Koshmar: The Last Reverie — Steam game cover

    Koshmar: The Last Reverie

    Single-player alternative to Secrets of the Dark Fortress — playable solo, no multiplayer required. Shares Action and Adventure with Secrets of the Dark Fortress.

    When a city falls to a sleeping plague, nightmares rise up. Awaken the city as a mortician’s daughter who walks the line between the sleeping and the waking. Fight through the dreams, seal the rifts, make choices that chip away at who she is, try to become the nightmare that nightmares fear.

    ActionAdventureSingle-playerSimilar games →
  4. 4
    Umbra Survivors — Steam game cover

    Umbra Survivors

    Single-player alternative to Secrets of the Dark Fortress — playable solo, no multiplayer required. Shares Action and Indie with Secrets of the Dark Fortress.

    The first 3D Gothic Survivors-like on Steam. Thousands of enemies. One survivor. No mercy. Fight through endless hordes, roll rare card upgrades and forge broken builds. Every level-up can change your entire run. Multiple playable characters. Epic bosses. Seasonal events.

    ActionIndieSimulationSingle-playerSimilar games →
  5. 5
    Kernel Hearts — Steam game cover

    Kernel Hearts

    Single-player alternative to Secrets of the Dark Fortress — playable solo, no multiplayer required. Shares Action and Indie with Secrets of the Dark Fortress.

    Gather your allies. Eliminate Angels. Transform into a Magical Girl. Slay god. Kernel Hearts is a Multiplayer Co-Op Roguelike Action RPG about four magical girls and their attempt to save a world that's drowning in ashes

    2026ActionIndieRPGSingle-playerSimilar games →
  6. 6
    幻想郷大激突 : Touhou Impact — Steam game cover

    幻想郷大激突 : Touhou Impact

    Single-player alternative to Secrets of the Dark Fortress — playable solo, no multiplayer required. Shares Action and Indie with Secrets of the Dark Fortress.

    幻想郷大激突 : Touhou Impact is an unofficial Touhou Project fan game. Youkai have appeared—far too many of them. This is clearly an incident, but don't worry. In Gensokyo, the answer is simple: beat them all up first, then find the culprit later.

    2026ActionIndieSingle-playerSimilar games →
  7. 7
    Riftslayer — Steam game cover

    Riftslayer

    Single-player alternative to Secrets of the Dark Fortress — playable solo, no multiplayer required. Shares Action and Indie with Secrets of the Dark Fortress.

    Riftslayer is a fast-paced 3D action roguelite. Fight massive waves of enemies, combine weapons and perks into powerful builds, and face dangerous bosses. Every run becomes more chaotic, more powerful, and more unpredictable.

    ActionIndieRPGSingle-playerSimilar games →
  8. 8
    Rogue Blight — Steam game cover

    Rogue Blight

    Single-player alternative to Secrets of the Dark Fortress — playable solo, no multiplayer required. Shares Action and Indie with Secrets of the Dark Fortress.

    Rogue Blight is a rogue-lite with focus on souls-like combat, featuring a Slay The Spire-inspired map system. Fight your way through ever-changing maps. Customize your playstyle based on what you find. Death is punishing. Only skill and persistence will carry you forward.

    2026ActionIndieRPGSingle-playerSimilar games →
  9. 9
    Secrets of the Witch House — Steam game cover

    Secrets of the Witch House

    Single-player alternative to Secrets of the Dark Fortress — playable solo, no multiplayer required. Shares Action and Indie with Secrets of the Dark Fortress.

    Secrets of the Witch House is a challenging, procedurally generated, permadeath, action roguelike. Encounter fierce monsters, dark secrets, devastating weapons and pachinko as you wage war against an ancient evil.

    2023ActionIndieAdventure12.99 USDSingle-playerSimilar games →