IMHO.

Single-player games like Astral Guardian

Below are 9 single-player Steam games similar to Astral Guardian, 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 Astral Guardian page.

Ranked picks

  1. 1
    friends world — Steam game cover

    friends world

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

    This is a voxel style sandbox game that focuses on survival. You can do anything inside and destroy any block. and cooperatively survive and fight with friends in a world. If you like playing Minecraft, this is a game you must not miss.

    2023ActionStrategyIndie3.99 USDSingle-playerSimilar games →
  2. 2
    Reforged TD - Tower Defense — Steam game cover

    Reforged TD - Tower Defense

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

    Single or multiplayer tower defense with high replay value. Build and upgrade towers, use special items and discover the extensive talent tree for your characters and towers. Ideal for strategists!

    2021StrategyIndieAdventure12.99 USDSingle-playerSimilar games →
  3. 3
    Modiverse — Steam game cover

    Modiverse

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

    An open multiplayer sandbox game; includes tools, props, levels, NPCs, character models, game-modes and much more! Make your own using our mod kit!

    2021ActionStrategyIndie0.99 USDSingle-playerSimilar games →
  4. 4
    Attack on Toys — Steam game cover

    Attack on Toys

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

    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 →
  5. 5
    Steel Graves — Steam game cover

    Steel Graves

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

    A nervous Action / Strategy / Building game in multiplayer that oppose humans against aliens in huge battlefields. Build your base anywhere, upgrade your equipment, recruit hundreds of IA soldiers, and take part in the greatest intergalactic war.

    2021ActionStrategyIndie9.99 USDSingle-playerSimilar games →
  6. 6
    Planetary Annihilation: TITANS — Steam game cover

    Planetary Annihilation: TITANS

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

    Wage war across entire solar systems with massive armies at your command. Annihilate enemy forces with world-shattering TITAN-class units, and demolish planets with massive super weapons!

    2015ActionStrategyIndie29.99 USDDeck PlayableSingle-playerSimilar games →
  7. 7
    Element TD 2 - Tower Defense — Steam game cover

    Element TD 2 - Tower Defense

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

    Element TD 2 sees you combine powerful elements to create unique towers. Prove your defenses against challenging foes, and compete or cooperate with others to determine who has mastered the elements.

    2021StrategyIndie5.99 USDDeck PlayableSingle-playerSimilar games →
  8. 8
    Night of the Dead — Steam game cover

    Night of the Dead

    Single-player alternative to Astral Guardian — playable solo, no multiplayer required. Shares Indie with Astral Guardian.

    'Night of the Dead' is an open-world game that combines elements of exploration, tower defense, survival, and crafting. Traverse a world dominated by zombies while collecting various resources and powerful equipment. Build a fortress to survive the hordes of zombies that swarm every night!

    2024ActionIndieAdventure29.99 USDDeck PlayableSingle-playerSimilar games →
  9. 9
    Stand Your Ground — Steam game cover

    Stand Your Ground

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

    Defend attacks from enemies from all directions within a limited time. Only by making full use of the differences in each tower and choosing appropriate random rewards can you survive.

    2023StrategyEarly Access7.99 USDSingle-playerSimilar games →