IMHO.

Single-player games like Sunstone War - Prologue

Below are 8 single-player Steam games similar to Sunstone War - Prologue, 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 Sunstone War - Prologue page.

Ranked picks

  1. 1
    Sunstone War — Steam game cover

    Sunstone War

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

    Sunstone War is a unique Action game with Tower Defense element where you can carry EVERYTHING! Move towers, toss away enemies, carry obstacles, upgrade skills and journey through lands to protect your village from calamity!

    2024ActionStrategyIndie2.99 USDDeck VerifiedSingle-playerSimilar games →
  2. 2
    Cult Defense — Steam game cover

    Cult Defense

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

    Defend your cult from the police and military. Build shrines, raise followers, and prepare for the attack.

    ActionStrategyIndieSingle-playerSimilar games →
  3. 3
    Cosmic Trip — Steam game cover

    Cosmic Trip

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

    Cosmic Trip is an award-winning real-time strategy VR game. Build a base, command a flying drone army, and attack/defend hostile enemies on strange alien planets.

    2017ActionStrategyIndie19.99 USDSingle-playerSimilar games →
  4. 4
    Here Comes The Swarm — Steam game cover

    Here Comes The Swarm

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

    Here Comes the Swarm is a survival RTS with a pause button! Create your strategy, build, manage, and defend your settlements at your own pace. Take the fight to the hive mind and lead expeditions to deliver a deadly blow and eradicate your foes. Will you reclaim Ulora from the relentless Swarm?

    2026StrategyIndieSimulation15.99 USDDeck PlayableSingle-playerSimilar games →
  5. 5
    Touhou Monster TD ~ 幻想乡妖怪塔防 — Steam game cover

    Touhou Monster TD ~ 幻想乡妖怪塔防

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

    Easy to learn but hard to master, Touhou Monster TD is a unique Tower defense Game. Control your character, level up and unlock tower skills and character talents, use your wisdom to defeat incoming enemies. Travel the Gensokyo, find out why the “Incident” happened this time.

    2021ActionStrategyIndie18.99 USDDeck PlayableSingle-playerSimilar games →
  6. 6
    Tower Factory — Steam game cover

    Tower Factory

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

    Tower Factory is a tower defense and automation game with roguelite elements. Optimize resource production using conveyor systems while defending against monster waves. Can you find and destroy the enemy tower before it's too late?

    2024ActionStrategyIndie14.99 USDDeck PlayableSingle-playerSimilar games →
  7. 7
    Final Outpost: Definitive Edition — Steam game cover

    Final Outpost: Definitive Edition

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

    Final Outpost is a survival strategy base-builder. You lead the last survivors of the apocalypse. Assign roles, craft tools, and manage resources carefully. Construct buildings, level up your citizens, and fortify your town against hordes of zombies. How many days can you survive?

    2025StrategySimulation9.99 USDDeck VerifiedSingle-playerSimilar games →
  8. 8
    Control Craft 3 — Steam game cover

    Control Craft 3

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

    Control Craft 3 is a fast paced RTS which brings together quick thinking and clever tactics for some veritable planet conquering action!

    2016ActionStrategyIndie0.99 USDSingle-playerSimilar games →