IMHO.

Single-player games like Interregnum Chronicles: Signal

Below are 9 single-player Steam games similar to Interregnum Chronicles: Signal, 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 Interregnum Chronicles: Signal page.

Ranked picks

  1. 1
    The mystery of the planet venus — Steam game cover

    The mystery of the planet venus

    Single-player alternative to Interregnum Chronicles: Signal — playable solo, no multiplayer required. Shares Indie with Interregnum Chronicles: Signal.

    The Mystery of the planet Venus — is a single player first-person adventure game set on the planet Venus.

    2021IndieAdventureSimulation1.99 USDSingle-playerSimilar games →
  2. 2
    Return to Grace — Steam game cover

    Return to Grace

    Single-player alternative to Interregnum Chronicles: Signal — playable solo, no multiplayer required.

    A daring space archaeologist has just unearthed the ancient resting place of a long lost A.I. god known as Grace. Adventure with various fractured A.I. personalities as you uncover the great mystery of why she was shut down all those years ago.

    2023Adventure14.99 USDDeck VerifiedSingle-playerSimilar games →
  3. 3
    Tacoma — Steam game cover

    Tacoma

    Single-player alternative to Interregnum Chronicles: Signal — playable solo, no multiplayer required. Shares Indie with Interregnum Chronicles: Signal.

    Tacoma is a sci-fi narrative adventure from the creators of Gone Home. Set aboard a high-tech space station in the year 2088, explore every detail of how the station’s crew lived and worked, finding the clues that add up to a gripping story of trust, fear, and resolve in the face of disaster.

    2017IndieAdventure19.99 USDDeck VerifiedSingle-playerSimilar games →
  4. 4
    >observer_ — Steam game cover

    >observer_

    Single-player alternative to Interregnum Chronicles: Signal — playable solo, no multiplayer required. Shares Indie with Interregnum Chronicles: Signal.

    The original first‑person cyberpunk horror detective tale set in a decaying, neon‑scarred future. As an Observer who invades minds to hunt for clues, you will sift through corrupted memories to track down a mysterious killer and confront your own dark past.

    2017IndieAdventure29.99 USDDeck PlayableSingle-playerSimilar games →
  5. 5
    Master Reboot — Steam game cover

    Master Reboot

    Single-player alternative to Interregnum Chronicles: Signal — playable solo, no multiplayer required. Shares Indie with Interregnum Chronicles: Signal.

    Imagine a world where death is no longer final, where precious memories are saved to enjoy forever, where your soul is immortal. Master Reboot is a haunting first-person sci-fi adventure.

    2013ActionIndieAdventure2.99 USDDeck PlayableSingle-playerSimilar games →
  6. 6
    Cloudpunk — Steam game cover

    Cloudpunk

    Single-player alternative to Interregnum Chronicles: Signal — playable solo, no multiplayer required. Shares Indie with Interregnum Chronicles: Signal.

    A neon-noir story in a rain-drenched cyberpunk metropolis. It’s your first night on the job working for the Cloudpunk delivery service. Two rules: Don’t miss a delivery and don’t ask what’s in the package.

    2020IndieAdventureRPG19.99 USDDeck VerifiedSingle-playerSimilar games →
  7. 7
    Sanctum 2 — Steam game cover

    Sanctum 2

    Single-player alternative to Interregnum Chronicles: Signal — playable solo, no multiplayer required. Shares Indie with Interregnum Chronicles: Signal.

    Sanctum 2 is the sequel to the world’s first Tower Defense/FPS hybrid game. Pick from four unique character classes and embark on a mission to protect the oxygen-producing Cores from hordes of deadly aliens who are threatened by their existence.

    2013ActionStrategyIndie14.99 USDDeck VerifiedSingle-playerSimilar games →
  8. 8
    1000xRESIST — Steam game cover

    1000xRESIST

    Single-player alternative to Interregnum Chronicles: Signal — playable solo, no multiplayer required. Shares Indie with Interregnum Chronicles: Signal.

    1000xRESIST is a thrilling sci-fi adventure. The year is unknown, and a disease spread by an alien invasion keeps you underground. You are Watcher. You dutifully fulfil your purpose in serving the ALLMOTHER, until the day you discover a shocking secret that changes everything.

    2024IndieAdventure19.99 USDDeck PlayableSingle-playerSimilar games →
  9. 9
    Interregnum: False Prophet — Steam game cover

    Interregnum: False Prophet

    Single-player alternative to Interregnum Chronicles: Signal — playable solo, no multiplayer required.

    A tactical, turn-based strategy game in a post-apocalyptic world of eternal winter. As the titular False Prophet, recruit and lead a group of survivors to a promised land. Loot, craft, and make the best of what you find.

    2024StrategyAdventureRPG24.99 USDDeck PlayableSingle-playerSimilar games →