IMHO.

Single-player games like Knights vs Aliens

Below are 8 single-player Steam games similar to Knights vs Aliens, 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 Knights vs Aliens page.

Ranked picks

  1. 1
    Pillar Of War — Steam game cover

    Pillar Of War

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

    A fast-paced, real-time strategy game inspired by chess, where units follow classic movement rules but fight with health, cooldown-based attacks, and powerful pillar abilities in matches that typically last 1–2 minutes,

    ActionStrategyIndieSingle-playerSimilar games →
  2. 2
    Waveguard — Steam game cover

    Waveguard

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

    A roguelike tower defense where every run reshapes your strategy. Build your team of towers, combine more than 80 artifacts, and explore a pixel-art world while taking on ever tougher challenges and bosses.

    StrategySingle-playerSimilar games →
  3. 3
    Swarm Queen — Steam game cover

    Swarm Queen

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

    A quick-to-learn but challenging real-time strategy game where you spawn an army of space-bugs that control themselves.

    2017StrategyIndieSimulation7.49 USDSingle-playerSimilar games →
  4. 4
    Aliens: Dark Descent — Steam game cover

    Aliens: Dark Descent

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

    Drop into the gripping journey of Aliens: Dark Descent, a squad-based, single-player action game in the iconic Alien franchise. Lead your soldiers in real-time to stop a new and terrifying kind of Xenomorph outbreak on Planet Lethe.

    2023ActionStrategy39.99 USDDeck PlayableSingle-playerSimilar games →
  5. 5
    Circle Empires 2 — Steam game cover

    Circle Empires 2

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

    CIRCLE EMPIRES returns! Expand your empire, circle by circle, in this fast-paced follow-up to the hit RTS. Gather resources, build armies, and defeat bosses (or your friends) in a world that changes with every game. With unique units and biomes, it's an addictive battle of wits and tactics.

    2026StrategyIndieCasual12.99 USDDeck PlayableSingle-playerSimilar games →
  6. 6
    Door Kickers 2: Task Force North — Steam game cover

    Door Kickers 2: Task Force North

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

    Command military Special Ops Teams in gripping tactical combat against a Middle East-based terrorist network. Sequel to RockPaperShotgun's "Best Tactics Game of 2014".

    2025ActionStrategyIndie24.99 USDDeck VerifiedSingle-playerSimilar games →
  7. 7
    Sudden Strike 5 — Steam game cover

    Sudden Strike 5

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

    Sudden Strike 5 delivers real-time tactics in epic WWII battles. A host of tactical options and more than 300 playable units open-up multiple approaches to reach your objectives in a 25 mission campaign on historical battlefields in Europe and North Africa.

    2026ActionStrategy49.99 USDDeck VerifiedSingle-playerSimilar games →
  8. 8
    The Mims Beginning — Steam game cover

    The Mims Beginning

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

    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 →