IMHO.

Single-player games like Atom By Atom

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

Ranked picks

  1. 1
    Industrial Garbage — Steam game cover

    Industrial Garbage

    Single-player alternative to Atom By Atom — playable solo, no multiplayer required. Shares Simulation and Casual with Atom By Atom.

    Industrial Garbage is a game where combination is the key and money is your limit. You will have to manage yourself carefully and ensure that you complete orders in time, or else...

    2026SimulationCasualEarly Access4.49 USDSingle-playerSimilar games →
  2. 2
    Clogwork — Steam game cover

    Clogwork

    Single-player alternative to Atom By Atom — playable solo, no multiplayer required. Shares Indie and Simulation with Atom By Atom.

    CLOGWORK is a factory-automation game where you turn random pieces into final shapes. Build conveyor belts, glue, cut and rotate parts, wire logic signals, and send the finished shape to the hub to fulfil ever-changing orders.

    2026IndieSimulationCasualSingle-playerSimilar games →
  3. 3
    Outer Factory — Steam game cover

    Outer Factory

    Single-player alternative to Atom By Atom — playable solo, no multiplayer required. Shares Indie and Simulation with Atom By Atom.

    Outer Factory is a peaceful, minimalist factory simulation where you build and automate factories across planets and asteroids. Create complex production networks with simplified building mechanics. Become an interplanetary automation expert.

    StrategyIndieSimulationSingle-playerSimilar games →
  4. 4
    Industronaut — Steam game cover

    Industronaut

    Single-player alternative to Atom By Atom — playable solo, no multiplayer required. Shares Indie and Simulation with Atom By Atom.

    A survival engineering game where you build life support habitats, mine resources, and automate production chains on a radiation heavy planet. No rescue. No support. Just engineering.

    2026IndieAdventureSimulationSingle-playerSimilar games →
  5. 5
    Main Sequence — Steam game cover

    Main Sequence

    Single-player alternative to Atom By Atom — playable solo, no multiplayer required. Shares Indie and Simulation with Atom By Atom.

    Main Sequence is a first-person space-sim factory builder where you design spaceships, build space stations, and automate everything. Start with a single ship and grow to become an interstellar industrial empire as you leave your mark on the galaxy.

    StrategyIndieSimulationSingle-playerSimilar games →
  6. 6
    Stella Astrum — Steam game cover

    Stella Astrum

    Single-player alternative to Atom By Atom — playable solo, no multiplayer required. Shares Indie and Simulation with Atom By Atom.

    Stella Astrum is a whimsical factory game where you manage elemental resources to form Stars, Planets, and more. Use your skills to unlock upgradable factories, nurture colorful celestial bodies, and shape an expansive galaxy. Sit back, relax, and amplify the universe beyond its artistic limits!

    2026StrategyIndieSimulationSingle-playerSimilar games →
  7. 7
    Gobs & Gears — Steam game cover

    Gobs & Gears

    Single-player alternative to Atom By Atom — playable solo, no multiplayer required. Shares Indie and Simulation with Atom By Atom.

    The Gob King wants his bomb and he wants it NOW! Scout the Fog, reclaim lost Buildings, run Trundler routes to feed them. Deliver the goods then rip it all up and move on. A scrappy logistics puzzle where nothing is permanent.

    2026StrategyIndieSimulationSingle-playerSimilar games →
  8. 8
    Swarmdustry — Steam game cover

    Swarmdustry

    Single-player alternative to Atom By Atom — playable solo, no multiplayer required. Shares Indie and Simulation with Atom By Atom.

    Build a living factory and automate the Swarm. Harvest resources, construct mega factories, and grow a colony of specialized biomechanical bugs. Balance growth, efficiency, and creep spread before hostile robots squish you for trying to consume their world.

    2026StrategyIndieSimulation26.99 USDSingle-playerSimilar games →