IMHO.

Single-player games like Unionatic

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

Ranked picks

  1. 1
    Kingdom Of Force — Steam game cover

    Kingdom Of Force

    Single-player alternative to Unionatic — playable solo, no multiplayer required. Shares Strategy and Early Access with Unionatic.

    KOF is a magic background real-time strategy game, which is based on the method of dispatching troops to occupy the city, and combines the elements of resource collection, construction, upgrading, tower defense and so on.

    2020StrategySimulationRPG6.99 USDSingle-playerSimilar games →
  2. 2
    Stick Wars: The Laneborn — Steam game cover

    Stick Wars: The Laneborn

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

    A 2D stickman strategy game on three lanes: you don’t micro troops you decide gold, deployments, and upgrades. Ally champions, lane-swapping bosses, and a campaign that only gets tougher.

    2027StrategyIndieCasualSingle-playerSimilar games →
  3. 3
    Scarecropia — Steam game cover

    Scarecropia

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

    Here is Scarecropia! Lead at most 400 people to build a settlement. Arm your village to fight against the Goblin army, or invest limited resources in yourself to become unparalleled! Take every cost to survive!

    2025ActionStrategyIndie9.99 USDSingle-playerSimilar games →
  4. 4
    Templar Castle Builder — Steam game cover

    Templar Castle Builder

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

    Besiege and conquer the castles and towns of your enemies. Build siege machines and train your army to assault the fortified cities but do not neglect your defence system. Change the course of history, and do not let the Templar Order fall.

    ActionStrategyAdventureSingle-playerSimilar games →
  5. 5
    Treefender — Steam game cover

    Treefender

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

    Relive your childhood in Treefender, a VR-exclusive 4 player online co-op base-building game where you build your own treefort and defend it against a spacesquid invasion!

    2022ActionStrategyIndie7.99 USDSingle-playerSimilar games →
  6. 6
    Ancient Wars: Medieval Crusades — Steam game cover

    Ancient Wars: Medieval Crusades

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

    New Real Time Strategy Game based on medieval times, where you will control powerful factions and empires, with large-scale epic battles, asymmetric civilizations, unit customization system with RPG elements, dynamic AI, 8K support and much more.

    2024ActionStrategyIndie19.99 USDDeck PlayableSingle-playerSimilar games →
  7. 7
    Attack on Toys — Steam game cover

    Attack on Toys

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

    Relive Your Childhood Toys comes to life! Build your Army Toys, make battle scenario, watch the Toys battling each other, and customize your play with Attack on Toys Toy Box. Command your Army Toys to fight againts another toys strategically and keep them alive during battle!

    2021ActionStrategyIndie6.99 USDDeck PlayableSingle-playerSimilar games →
  8. 8
    Ancient Wars: Sparta Definitive Edition — Steam game cover

    Ancient Wars: Sparta Definitive Edition

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

    One of the most innovative Real-Time Strategy Games comes back totally renewed and improved to the smallest detail, with epic large scale battles, new civilizations, unit customization system never seen before in a game, 8K support, and much more.

    2022ActionStrategyIndie9.99 USDDeck PlayableSingle-playerSimilar games →