IMHO.

Single-player games like VOIDSWARM

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

Ranked picks

  1. 1
    Warfactory: Automation RTS — Steam game cover

    Warfactory: Automation RTS

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

    Warfactory is an automation RTS where production defines the war effort. Build assembly lines to forge an army of machines, then feed thousands of units into massive real-time battles where every loss must be replaced by your factory.

    2026StrategyIndieSimulationSingle-playerSimilar games →
  2. 2
    Grimstar: Crystals are the New Oil! — Steam game cover

    Grimstar: Crystals are the New Oil!

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

    Grimstar is a real-time strategy game with a story-based single-player campaign. Your brother's sudden death has hit you hard, but the laws of the corporation for which he laid down his life dictate that you must take his place until his contract is fulfilled...

    2025ActionStrategyIndie12.99 USDDeck PlayableSingle-playerSimilar games →
  3. 3
    ERA ONE — Steam game cover

    ERA ONE

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

    Era One is an innovative space game that combines elements of real-time strategy, base building, space survival, and tactical battles. Players can create and customize their bases from scratch, construct various types of structures and warships, manage fleets, and engage in tactical space battles.

    2025StrategyEarly Access29.99 USDDeck PlayableSingle-playerSimilar games →
  4. 4
    Task Force Admiral - Vol.1: American Carrier Battles — Steam game cover

    Task Force Admiral - Vol.1: American Carrier Battles

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

    Experience the thrill of leading American aircraft carriers to victory in this innovative full 3D command simulation wargame set in the Pacific in 1942. First-person or God’s eye, you lead your fleet and planes right from the center of the battle.

    2026ActionStrategySimulation39.99 USDDeck PlayableSingle-playerSimilar games →
  5. 5
    The Scouring — Steam game cover

    The Scouring

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

    The Scouring is an RTS with fast pace, high attention to detail and next generation experience. Lead humans or orcs in a Classic Mode or use one of powerful Heroes to fight for victory! Play alone or with friends. Use our modding tools to create maps and custom game modes! Join The Scouring!

    2025ActionStrategyRPG24.99 USDDeck PlayableSingle-playerSimilar games →
  6. 6
    The Mims Beginning — Steam game cover

    The Mims Beginning

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

    Experience a mystical journey with the Mims in this strategic god-like adventure—build, grow, protect, and wield divine powers. Now it's completely free! Also check out our other story-rich fantasy game, The End of the Sun, where you become a tracker of mythical beings and unravel mysteries.

    2016StrategyIndieSimulationFreeSingle-playerSimilar games →
  7. 7
    Calyx — Steam game cover

    Calyx

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

    A strategy game with a new kind of enemy, Calyx puts you in charge of a space mining outpost, locked in battle against powerful plant-aliens. Build your base, gather resources, assemble your forces, and take on the Calyx. With only an out-of-date AI for company, can you survive?

    2026StrategyEarly Access24.99 USDDeck PlayableSingle-playerSimilar games →
  8. 8
    Here Comes The Swarm — Steam game cover

    Here Comes The Swarm

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

    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 →
  9. 9
    Happy Hour Hero — Steam game cover

    Happy Hour Hero

    Single-player alternative to VOIDSWARM — playable solo, no multiplayer required.

    🥃 Time is short, just like our signature cocktail. Will you make a stir and gain recognition as best bartender in town, or get mixed up and bottle it? 🍸

    2024IndieSimulationCasual4.99 USDSingle-playerSimilar games →
9 Single-Player Games Like VOIDSWARM (2026) · imho.run