IMHO.

Single-player games like Slimecity

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

Ranked picks

  1. 1
    Everfront — Steam game cover

    Everfront

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

    A territory-control strategy game where you continuously expand against AI opponents. Master six doctrines, unlock upgrades, and dominate procedurally generated maps.

    2026ActionStrategyIndieSingle-playerSimilar games →
  2. 2
    Hundred Battle — Steam game cover

    Hundred Battle

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

    Grow like a roguelike, draft your party like an auto-battler, command like an RTS — a semi-auto-battler roguelike of a hundred battles.

    2026StrategyIndieSingle-playerSimilar games →
  3. 3
    OrbiTower — Steam game cover

    OrbiTower

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

    The hungry Gooper swarm threatens intergalactic peace. Stop them! Build towers around planets and take control over their orbits. Spin them with all you’ve attached! Collect new towers, powers and upgrades to beat the onslaught of goopers and save the galaxy in this colorful Tower Defense Roguelite!

    StrategyIndieCasualSingle-playerSimilar games →
  4. 4
    Crimson Quest — Steam game cover

    Crimson Quest

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

    Crimson Quest lets players control a single character that acts as a production base. Players can create units and towers, explore the field, and experience real-time roguelike progression with action elements, offering a unique twist on traditional RTS gameplay.

    ActionStrategyIndieSingle-playerSimilar games →
  5. 5
    Unconquered Sun — Steam game cover

    Unconquered Sun

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

    A space-sim and roguelite where you build your own ship and live in it. Survive in a procedural galaxy that escalates into full faction warfare.

    ActionStrategyIndieSingle-playerSimilar games →
  6. 6
    Scallywags — Steam game cover

    Scallywags

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

    Set sail with a ragtag group of Scallywags in a strategic pirate crew‑management roguelike. Improve your ship, learn fantastical abilities, and hunt down the infamous Aces and their treasures. Every run is a fresh adventure and brings you closer to becoming a true Pirate Legend.

    ActionStrategyIndieSingle-playerSimilar games →
  7. 7
    Dawn Of Defense — Steam game cover

    Dawn Of Defense

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

    Dawn of Defense blends RTS, Tower Defense, and Roguelite progression. In a last defense, lead your tribe against the Empire: Command warriors in battle, fortify defenses, and build an economy as you fight to reclaim your ancestral homeland.

    2026StrategySingle-playerSimilar games →
  8. 8
    IAH: INTERNET WAR — Steam game cover

    IAH: INTERNET WAR

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

    "IAH: INTERNET WAR" - a roguelike Turn-Based RTS hybrid survival game. Battle through the internet’s depths and survive as long as possible.

    ActionStrategyIndieSingle-playerSimilar games →