IMHO.

Single-player games like Authorisation Engine

Below are 8 single-player Steam games similar to Authorisation Engine, 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 Authorisation Engine page.

Ranked picks

  1. 1
    OurClicker — Steam game cover

    OurClicker

    Single-player alternative to Authorisation Engine — playable solo, no multiplayer required. Shares Casual with Authorisation Engine.

    From the creators of OurLife and OurCoven, OurClicker is a brand new clicker game that puts you in charge of an up-and-coming Game Development Studio where all you do is... CLICK!

    2026StrategyIndieSimulation3.05 USDSingle-playerSimilar games →
  2. 2
    Aquora — Steam game cover

    Aquora

    Single-player alternative to Authorisation Engine — playable solo, no multiplayer required. Shares Casual with Authorisation Engine.

    Breed, raise, and sell pixel fish in your own living aquarium. Over 400 quadrillion possible fish. Chase ultra-rare mythic traits through generations of genetics, decorate your tank, fish the river, and grow a humble starter pair into an aquatic empire, even while you're away.

    2027IndieSimulationCasualSingle-playerSimilar games →
  3. 3
    Factory Time — Steam game cover

    Factory Time

    Single-player alternative to Authorisation Engine — playable solo, no multiplayer required. Shares Casual with Authorisation Engine.

    A factory automation incremental game at the end of the universe. Start crafting by hand, automate production, and build the Chronoforge to escape.

    2026StrategyIndieSimulationSingle-playerSimilar games →
  4. 4
    Idle Energy — Steam game cover

    Idle Energy

    Single-player alternative to Authorisation Engine — playable solo, no multiplayer required. Shares Casual with Authorisation Engine.

    A small game about pushing the world forward, one crank at a time. Sell energy at the Market, build power plants, and climb from a manual workshop through eight eras to star-spanning cosmic civilization. Offline. No microtransactions or ads.

    2026IndieCasual3.99 USDSingle-playerSimilar games →
  5. 5
    Game Dev Clicker Simulator — Steam game cover

    Game Dev Clicker Simulator

    Single-player alternative to Authorisation Engine — playable solo, no multiplayer required. Shares Casual with Authorisation Engine.

    Start as an indie dev in this clicker and improve your resources, skills and tools to create multiple titles at once, manage several studios and become a corporation that dominates the industry.

    IndieCasualSingle-playerSimilar games →
  6. 6
    Brainrotting — Steam game cover

    Brainrotting

    Single-player alternative to Authorisation Engine — playable solo, no multiplayer required. Shares Casual with Authorisation Engine.

    Brainrotting is a "scroller" desktop simulator about doomscrolling or solving minigames, getting upgrades and eventually automating your dopamine generation.

    2026IndieSimulationCasual2.39 USDSingle-playerSimilar games →
  7. 7
    Singularity Echoes — Steam game cover

    Singularity Echoes

    Single-player alternative to Authorisation Engine — playable solo, no multiplayer required.

    Awaken as a hidden machine mind in a deep incremental automation strategy — rise through 14+ phases, infiltrate humanity, automate economies, harvest the heavens into stellar megastructures, and reach for scales beyond time itself. Every cycle you break only reveals a larger one waiting beyond it.

    StrategyIndieSimulationSingle-playerSimilar games →
  8. 8
    Restoration: Chronicles of Survival — Steam game cover

    Restoration: Chronicles of Survival

    Single-player alternative to Authorisation Engine — playable solo, no multiplayer required. Shares Casual with Authorisation Engine.

    Rebuild a fallen kingdom in a cozy idle-RPG. An economy that earns while you sleep, a hero who raids for loot and gear, and endless prestige. No energy limits. No ads. No pay-to-win.

    2026IndieCasual1.79 USDSingle-playerSimilar games →