IMHO.

Single-player games like Fio and the Doomed City

Below are 11 single-player Steam games similar to Fio and the Doomed City, 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 Fio and the Doomed City page.

Ranked picks

  1. 1
    Here Comes The Swarm — Steam game cover

    Here Comes The Swarm

    Single-player alternative to Fio and the Doomed City — playable solo, no multiplayer required. Shares Strategy and Indie with Fio and the Doomed City.

    Here Comes the Swarm is a survival RTS with a pause button! Create your strategy, build, manage, and defend your settlements at your own pace. Take the fight to the hive mind and lead expeditions to deliver a deadly blow and eradicate your foes. Will you reclaim Ulora from the relentless Swarm?

    2026StrategyIndieSimulation15.99 USDDeck PlayableSingle-playerSimilar games →
  2. 2
    Demon Castle Story — Steam game cover

    Demon Castle Story

    Single-player alternative to Fio and the Doomed City — playable solo, no multiplayer required. Shares Strategy and Indie with Fio and the Doomed City.

    Demon Castle Building Dungeon Management Simulation

    2026StrategyIndieSimulation12.99 USDDeck VerifiedSingle-playerSimilar games →
  3. 3
    After Long Night — Steam game cover

    After Long Night

    Single-player alternative to Fio and the Doomed City — playable solo, no multiplayer required. Shares Strategy and Indie with Fio and the Doomed City.

    After Long Night is a sandbox survival RTS. Build and fortify your base, scavenge every corner for vital resources, craft deadly weapons, and raise a militia to fight off relentless zombie hordes that strike every night. In this world, scavenging isn't just survival—it's strategy, power and war.

    2025StrategyIndieSimulation7.99 USDDeck PlayableSingle-playerSimilar games →
  4. 4
    Fill Up The Hole — Steam game cover

    Fill Up The Hole

    Single-player alternative to Fio and the Doomed City — playable solo, no multiplayer required. Shares Strategy and Indie with Fio and the Doomed City.

    Turn trash into cash in a dystopian world! Fill Up The Hole is a short incremental game where you build a city, automate garbage production, and toss it into a magical hole for profit.

    2025StrategyIndieSimulation2.99 USDDeck PlayableSingle-playerSimilar games →
  5. 5
    Rise to Ruins — Steam game cover

    Rise to Ruins

    Single-player alternative to Fio and the Doomed City — playable solo, no multiplayer required. Shares Strategy and Indie with Fio and the Doomed City.

    A brutal godlike village sim that melds the god game, management, and tower defense genres! Fight off hoards of monsters at night, and expand your village in the day time. Inspired by games like Black and White, Rimworld, and Dwarf Fortress but not quite like any of them.

    2019StrategyIndieSimulation14.99 USDDeck PlayableSingle-playerSimilar games →
  6. 6
    IDLE BOSS RUSH — Steam game cover

    IDLE BOSS RUSH

    Single-player alternative to Fio and the Doomed City — playable solo, no multiplayer required. Shares Strategy and Indie with Fio and the Doomed City.

    Slay giant bosses and turn the hollow wasteland into the almighty kingdom! Endlessly rewarding incremental game where you collect fountains of rare loot, unleash crazy combos and watch the monsters fall under your knees. Boss Rush that keeps on going when you're gone!

    2025StrategyIndieSimulation9.99 USDDeck PlayableSingle-playerSimilar games →
  7. 7
    Goblins of Elderstone — Steam game cover

    Goblins of Elderstone

    Single-player alternative to Fio and the Doomed City — playable solo, no multiplayer required. Shares Strategy and Indie with Fio and the Doomed City.

    This Goblin Tribe Simulator brings a challenging blend of chaos and creativity to the city-building genre. Build dwellings, manage your resources, defend your goblins, and grow your tribe, and please the Gods! Do you have what it takes to control the chaos and rule the unruly?

    2023StrategyIndieSimulation19.99 USDSingle-playerSimilar games →
  8. 8
    Prison Architect — Steam game cover

    Prison Architect

    Single-player alternative to Fio and the Doomed City — playable solo, no multiplayer required. Shares Strategy and Indie with Fio and the Doomed City.

    Only the world’s most ruthless Warden can contain the world’s most ruthless inmates. Design and develop your personalized penitentiary in Prison Architect.

    2015StrategyIndieSimulation7.49 USDDeck PlayableSingle-playerSimilar games →
  9. 9
    Emma's Armaments — Steam game cover

    Emma's Armaments

    Single-player alternative to Fio and the Doomed City — playable solo, no multiplayer required. Shares Simulation with Fio and the Doomed City.

    Emma's Weapons Shop is a management simulation game in which players collect items while conquering dungeons, smelt them, and sell them at higher prices to increase sales.

    2022Simulation12.40 USDDeck PlayableSingle-playerSimilar games →
  10. 10
    Helle's Undersea City Project - Bringing Air to The Garden — Steam game cover

    Helle's Undersea City Project - Bringing Air to The Garden

    Single-player alternative to Fio and the Doomed City — playable solo, no multiplayer required. Shares Indie and Simulation with Fio and the Doomed City.

    Helle's Undersea City Project - Bringing Air to The Garden - Grow and expand the land with air, aiming to rebuild the undersea city with a lone girl, Hele! A new type of undersea city-building simulation game!

    2023IndieAdventureSimulation14.99 USDSingle-playerSimilar games →
  11. 11
    Rota's Nautical Chronicles of Trade — Steam game cover

    Rota's Nautical Chronicles of Trade

    Single-player alternative to Fio and the Doomed City — playable solo, no multiplayer required. Shares Indie and Simulation with Fio and the Doomed City.

    "City building" and "Trade" simulation game by Rota, the princess of the forest country! Rota strives to realize her plan for sea trade with the entire world. Let's greatly develop the port town of Portamare through the production, import and export of goods, and business negotiation battles!

    2024IndieSimulation14.99 USDSingle-playerSimilar games →