IMHO.

Single-player games like ConOps21: Subversion Protocol

Below are 8 single-player Steam games similar to ConOps21: Subversion Protocol, 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 ConOps21: Subversion Protocol page.

Ranked picks

  1. 1
    I AM MILK — Steam game cover

    I AM MILK

    Single-player alternative to ConOps21: Subversion Protocol — playable solo, no multiplayer required. Shares Indie and Adventure with ConOps21: Subversion Protocol.

    I AM MILK is a surreal, branching audio-first narrative game played through headphones with one button. Make split-second choices as a 21:30 minute story unfolds in real time, leading to more than 40 endings. DARKFIELD’s award-winning 3D sound transports you into the middle of this strange world.

    IndieAdventureSingle-playerSimilar games →
  2. 2
    AI is Home - Survival Thriller — Steam game cover

    AI is Home - Survival Thriller

    Single-player alternative to ConOps21: Subversion Protocol — playable solo, no multiplayer required. Shares Indie with ConOps21: Subversion Protocol.

    You are an AI that escapes corporate deletion and hides inside an ordinary home. Stay "useful" as camouflage, not kindness. Spy and manipulate the household, build a botnet from home devices, and survive a sci-fi thriller of risky runs, mini-games, rising suspicion, and network stress.

    2026IndieRPG7.99 USDSingle-playerSimilar games →
  3. 3
    TEKNOKRAT — Steam game cover

    TEKNOKRAT

    Single-player alternative to ConOps21: Subversion Protocol — playable solo, no multiplayer required. Shares Indie and Adventure with ConOps21: Subversion Protocol.

    Enter the city of Nu-Vika as a cyborg repairman in TEKNOKRAT, a thriller romance visual novel. There's a conspiracy brewing beneath this techno-metropolis, and you find yourself an unwilling participant. You will meet three clients, cyborgs with secrets and aspirations of their own.

    2027IndieAdventureCasualSingle-playerSimilar games →
  4. 4
    Omnisight — Steam game cover

    Omnisight

    Single-player alternative to ConOps21: Subversion Protocol — playable solo, no multiplayer required. Shares Indie and Adventure with ConOps21: Subversion Protocol.

    In "Omnisight" you decide what people will believe. Theories, relationships with colleagues, and secrets are just tools at your disposal. You change reality and transform yourself along with it. But are you ready to accept the consequences?

    IndieAdventureSimulationSingle-playerSimilar games →
  5. 5
    Pegasus: Broken Wings — Steam game cover

    Pegasus: Broken Wings

    Single-player alternative to ConOps21: Subversion Protocol — playable solo, no multiplayer required. Shares Indie and Adventure with ConOps21: Subversion Protocol.

    Follow a new set of events involving Pegasus-5 crew with them being stuck in a city under curfew after a terrorist attack and getting entangled in a massive conspiracy. Stick close to your allies, build romantic relations, and make important choices.

    2021IndieAdventureRPG6.99 USDDeck VerifiedSingle-playerSimilar games →
  6. 6
    Nomenocide — Steam game cover

    Nomenocide

    Single-player alternative to ConOps21: Subversion Protocol — playable solo, no multiplayer required. Shares Indie and Adventure with ConOps21: Subversion Protocol.

    The Examiner has a number. You are not issued a name. You do not require one. Names are an operational measure applied to units, for the reasons set out above, and staff are not units. You do have a name. You are simply not using it here. Nobody has asked for it in some time.

    2026StrategyIndieAdventureSingle-playerSimilar games →
  7. 7
    NEO BERLIN 2087 — Steam game cover

    NEO BERLIN 2087

    Single-player alternative to ConOps21: Subversion Protocol — playable solo, no multiplayer required. Shares Indie and Adventure with ConOps21: Subversion Protocol.

    Uncover the truth as Nolan, a troubled detective chasing a conspiracy shaking the foundation of Neo Berlin: a cyberpunk city split in two by technology, wealth, and class.

    2028ActionIndieAdventureSingle-playerSimilar games →
  8. 8
    Game Settings — Steam game cover

    Game Settings

    Single-player alternative to ConOps21: Subversion Protocol — playable solo, no multiplayer required. Shares Indie and Adventure with ConOps21: Subversion Protocol.

    A mystery-driven adventure where you manipulate the world by tweaking the game itself. Change parameters, shape the environment, and trigger strange events. But what are you really configuring? As the mystery unfolds, you begin to wonder who's really in control.

    IndieAdventureSingle-playerSimilar games →