IMHO.

Single-player games like Space Cube Tower Defense

Below are 16 single-player Steam games similar to Space Cube Tower Defense, 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 Space Cube Tower Defense page.

Ranked picks

  1. 1
    ZeroSpace — Steam game cover

    ZeroSpace

    Single-player alternative to Space Cube Tower Defense — playable solo, no multiplayer required. Shares Action and Strategy with Space Cube Tower Defense.

    ZeroSpace is a sci-fi hybrid RTS game with a story-rich, party-based RPG campaign. As commander of the Protectorate forces, you must upgrade your mothership, build strong relationships with your crew and recruit a formidable army. Navigate the hard choices that will shape humanity's future.

    2026ActionStrategyIndieSingle-playerSimilar games →
  2. 2
    Save from Bobr Curve — Steam game cover

    Save from Bobr Curve

    Single-player alternative to Space Cube Tower Defense — playable solo, no multiplayer required. Shares Action and Strategy with Space Cube Tower Defense.

    You find yourself in an unusual forest with anomalies and a huge mutant beaver is chasing you.

    2024ActionSportsStrategy199.99 USDSingle-playerSimilar games →
  3. 3
    Templar Castle Builder — Steam game cover

    Templar Castle Builder

    Single-player alternative to Space Cube Tower Defense — playable solo, no multiplayer required. Shares Action and Strategy with Space Cube Tower Defense.

    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 →
  4. 4
    Legacy of Sin: Ill-Boding — Steam game cover

    Legacy of Sin: Ill-Boding

    Single-player alternative to Space Cube Tower Defense — playable solo, no multiplayer required. Shares Strategy and Casual with Space Cube Tower Defense.

    The world as we knew it no longer exists. Join the few remaining survivors, lead them, and build your city, feed your people and organize your defenses to survive the hordes of enemies attacking your kingdom, mankind's last kingdom, our hope. Can you turn a small village into a great realm?

    2025StrategyRPGCasual12.99 USDSingle-playerSimilar games →
  5. 5
    Ancient Wars: Medieval Crusades — Steam game cover

    Ancient Wars: Medieval Crusades

    Single-player alternative to Space Cube Tower Defense — playable solo, no multiplayer required. Shares Action and Strategy with Space Cube Tower Defense.

    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 →
  6. 6
    Attack on Toys — Steam game cover

    Attack on Toys

    Single-player alternative to Space Cube Tower Defense — playable solo, no multiplayer required. Shares Action and Strategy with Space Cube Tower Defense.

    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 →
  7. 7
    Empires in Ruins — Steam game cover

    Empires in Ruins

    Single-player alternative to Space Cube Tower Defense — playable solo, no multiplayer required. Shares Strategy and Indie with Space Cube Tower Defense.

    The bastard child of Grand Strategy and Tower Defense, with a black humor infused plot, set in a grim, disillusioned world. Quell the rebellion, tame the Western Marches, disobey your orders and save your brandy. Not strictly in this order.

    2021StrategyIndieSimulation17.99 USDDeck PlayableSingle-playerSimilar games →
  8. 8
    Lessaria: Fantasy Kingdom Sim — Steam game cover

    Lessaria: Fantasy Kingdom Sim

    Single-player alternative to Space Cube Tower Defense — playable solo, no multiplayer required. Shares Strategy and Indie with Space Cube Tower Defense.

    Lessaria is an RTS inspired by Majesty 👑 where you guide heroes with indirect control. Play through the campaign or relax in sandbox mode as you build your magical kingdom.

    2025StrategyIndieSimulation24.90 USDDeck PlayableSingle-playerSimilar games →
  9. 9
    ★ Fallalypse ★ — Steam game cover

    ★ Fallalypse ★

    Single-player alternative to Space Cube Tower Defense — playable solo, no multiplayer required. Shares Action and Strategy with Space Cube Tower Defense.

    A group of terrorists has arranged a nuclear hell and occupied Fort. You’ll have to build your own base in the new world burnt by the nuclear apocalypse.

    2017ActionSportsStrategy199.99 USDSingle-playerSimilar games →
  10. 10
    ❂ Heroes of Hexaluga ❂ — Steam game cover

    ❂ Heroes of Hexaluga ❂

    Single-player alternative to Space Cube Tower Defense — playable solo, no multiplayer required. Shares Action and Strategy with Space Cube Tower Defense.

    Travel the world discovering its history, buy or find on the map weapons, magic, or allies and take part in battles revealing all the secrets of the world.

    2017ActionStrategyIndie199.99 USDSingle-playerSimilar games →
  11. 11
    GAME TUBE ♛ — Steam game cover

    GAME TUBE ♛

    Single-player alternative to Space Cube Tower Defense — playable solo, no multiplayer required. Shares Action and Strategy with Space Cube Tower Defense.

    A set of mini games to take some time off your everyday routine: Arrow shooting, 2D space shooter, Endless runner, Clicker.

    2018ActionSportsStrategy199.99 USDSingle-playerSimilar games →
  12. 12
    ★ Fallalypse ★ Death or Cress ♝ — Steam game cover

    ★ Fallalypse ★ Death or Cress ♝

    Single-player alternative to Space Cube Tower Defense — playable solo, no multiplayer required. Shares Action and Strategy with Space Cube Tower Defense.

    The communication with SH42 looking for new planets suitable for life was lost. The last message sent from it said: "Death or Cress". A space-marine and a priest of the newly-formed Space Battle Church set out on a search of the survived or to read the funeral service for the remains of the dead.

    2018ActionStrategyIndie199.99 USDSingle-playerSimilar games →
  13. 13
    ❂ Hexaluga ❂ Witch Hunter's Travelling Castle ♉ — Steam game cover

    ❂ Hexaluga ❂ Witch Hunter's Travelling Castle ♉

    Single-player alternative to Space Cube Tower Defense — playable solo, no multiplayer required. Shares Action and Strategy with Space Cube Tower Defense.

    Travel the world in your own moving castle fighting against monsters and helping people.

    2018ActionSportsStrategy199.99 USDSingle-playerSimilar games →
  14. 14
    ❂ Hexaluga ❂ Weapon and Shield ☯ — Steam game cover

    ❂ Hexaluga ❂ Weapon and Shield ☯

    Single-player alternative to Space Cube Tower Defense — playable solo, no multiplayer required. Shares Action and Strategy with Space Cube Tower Defense.

    Help the Weapon of War get over all the obstacles and return to its master, the Father of War. How long will it take you?

    2018ActionSportsStrategy199.99 USDSingle-playerSimilar games →
  15. 15
    ❂ Hexaluga ❂ Dungeons and Hunting ☠ — Steam game cover

    ❂ Hexaluga ❂ Dungeons and Hunting ☠

    Single-player alternative to Space Cube Tower Defense — playable solo, no multiplayer required. Shares Action and Strategy with Space Cube Tower Defense.

    Gather a party of heroic fighters and lead them through various dungeons to hunt dangerous monsters in this atmospheric RPG-clicker game.

    2018ActionStrategyIndie199.99 USDSingle-playerSimilar games →
  16. 16
    ♞ The Tactics of War ♞ — Steam game cover

    ♞ The Tactics of War ♞

    Single-player alternative to Space Cube Tower Defense — playable solo, no multiplayer required. Shares Action and Strategy with Space Cube Tower Defense.

    Become part of historical battles, take the lead and help your army defeat the enemy.

    2018ActionSportsStrategy199.99 USDSingle-playerSimilar games →