IMHO.

Single-player games like Runeline

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

Ranked picks

  1. 1
    Settletopia — Steam game cover

    Settletopia

    Single-player alternative to Runeline — playable solo, no multiplayer required. Shares Strategy and Simulation with Runeline.

    Grow a small colony into a vast, world-spanning civilization. Play solo or with friends as you gather resources, build cities, manage colonist needs, explore uncharted lands, establish logistics, raise armies, forge alliances, and wage wars—all in a living world.

    StrategySimulationSingle-playerSimilar games →
  2. 2
    Judgment: Apocalypse Survival Simulation — Steam game cover

    Judgment: Apocalypse Survival Simulation

    Single-player alternative to Runeline — playable solo, no multiplayer required. Shares Strategy and Indie with Runeline.

    Build, scavenge, craft, and perform occult rituals to survive in a demon-infested, post-apocalyptic colony simulation. Will you survive Judgment day?

    2018StrategyIndieSimulation19.99 USDDeck PlayableSingle-playerSimilar games →
  3. 3
    Ascent of Ashes — Steam game cover

    Ascent of Ashes

    Single-player alternative to Runeline — playable solo, no multiplayer required. Shares Strategy and Indie with Runeline.

    A colony sim set in a post-apocalyptic dystopia. Build and defend your base. Manage your survivors. Engage raiders, aliens, Remnant soldiers and other factions in real-time-with-pause combat. Or use stealth to outwit them. Explore the massive world. Survive at all costs

    2025StrategyIndieAdventure14.99 USDDeck PlayableSingle-playerSimilar games →
  4. 4
    RimWorld — Steam game cover

    RimWorld

    Single-player alternative to Runeline — playable solo, no multiplayer required. Shares Strategy and Indie with Runeline.

    A sci-fi colony sim driven by an intelligent AI storyteller. Generates stories by simulating psychology, ecology, gunplay, melee combat, climate, biomes, diplomacy, interpersonal relationships, art, medicine, trade, and more.

    2018StrategyIndieSimulation34.99 USDDeck VerifiedSingle-playerSimilar games →
  5. 5
    Dwarf Fortress — Steam game cover

    Dwarf Fortress

    Single-player alternative to Runeline — playable solo, no multiplayer required. Shares Strategy and Indie with Runeline.

    Build a fortress and try to help your dwarves survive against a deeply generated world. Keep your dwarves happy, grow their community and beware of digging too deeply. The deepest, most intricate simulation of a world that's ever been created.

    2022StrategyIndieSimulation23.99 USDDeck PlayableSingle-playerSimilar games →
  6. 6
    Kenshi — Steam game cover

    Kenshi

    Single-player alternative to Runeline — playable solo, no multiplayer required. Shares Strategy and Indie with Runeline.

    A free-roaming squad based RPG. Focusing on open-ended sandbox gameplay features rather than a linear story. Be a trader, a thief, a rebel, a warlord, an adventurer, a farmer, a slave, or just food for the cannibals. Train your men up from puny victims to master warriors.

    2018ActionStrategyIndie29.99 USDDeck PlayableSingle-playerSimilar games →
  7. 7
    AETHUS — Steam game cover

    AETHUS

    Single-player alternative to Runeline — playable solo, no multiplayer required. Shares Strategy and Indie with Runeline.

    Explore a vast underground world to mine and craft hundreds of items while building up your modular Outpost on the surface, to prospect for gems, refine resources and farm hydroponic crops in this top-down sci-fi survival-crafter where the story always provides a reason to dig deeper.

    2026StrategyIndieAdventure19.99 USDDeck PlayableSingle-playerSimilar games →
  8. 8
    Autonauts vs Piratebots — Steam game cover

    Autonauts vs Piratebots

    Single-player alternative to Runeline — playable solo, no multiplayer required. Shares Strategy and Indie with Runeline.

    Create, automate and defend an impenetrable base. Assemble and command a Bot army to combat an entire Piratebot invasion. Build, program and battle your way through five different zones.

    2022StrategyIndieSimulation19.99 USDDeck PlayableSingle-playerSimilar games →