IMHO.

Single-player games like Starfall Defenders

Below are 16 single-player Steam games similar to Starfall Defenders, 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 Starfall Defenders page.

Ranked picks

  1. 1
    SYNCHRONIZERS: UNDEAD MARINES — Steam game cover

    SYNCHRONIZERS: UNDEAD MARINES

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

    "SYNCHRONIZERS: UNDEAD MARINES" blends high-quality Three-Lane Tower Defense with Reverse Tower Defense gameplay. Command your units in a thrilling narrative reminiscent of a StarCraft and Plants Vs. Zombies fusion! Your choices will forge the path to victory—or defeat.

    ActionStrategyIndieSingle-playerSimilar games →
  2. 2
    Swarming Planet — Steam game cover

    Swarming Planet

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

    Build towers and learn abilities to defend against swarms of hundreds of on-screen hostile alien creatures. Choose between sets of randomized upgrades that both upgrade you and the alien swarm. From enormous explosions to far-reaching flamethrowers, no two games are the same.

    2021Strategy7.99 USDSingle-playerSimilar games →
  3. 3
    The Fall of Aether Station — Steam game cover

    The Fall of Aether Station

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

    Customize your Ships, Upgrade your fleet, and Command your way to victory in this ruthless rogue-lite tower defense/real time strategy hybrid. Take on an enemy that learns from your moves and adjusts its own path. Do you have what it takes to persevere?

    2024ActionStrategyIndie12.99 USDSingle-playerSimilar games →
  4. 4
    CARNAGE OFFERING Tower Defense — Steam game cover

    CARNAGE OFFERING Tower Defense

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

    The replicator robots are back! It's 2528. The machines are increasingly infecting the planets with genetically modified monsters. Challenge them and try to stop the onslaught. Upgrade buildings and heroes, mine resources, discover technology and fight to save humanity!

    2023ActionStrategyIndie9.99 USDSingle-playerSimilar games →
  5. 5
    Aliens: Dark Descent — Steam game cover

    Aliens: Dark Descent

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

    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 →
  6. 6
    Infested Planet — Steam game cover

    Infested Planet

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

    Command a team of 5 elite soldiers against an alien horde of 100,000. Surrounded on all sides, you must outmaneuver and outsmart the enemy.

    2014ActionStrategyIndie14.99 USDDeck PlayableSingle-playerSimilar games →
  7. 7
    IRON GUARD — Steam game cover

    IRON GUARD

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

    A sci-fi roomscale VR Tower Defense game. Strategize to destroy waves of rogue robots and assist the powerful turrets with a handheld drone. Build and collect resources and help evacuate your crew from the alien planet.

    2021ActionStrategy14.99 USDSingle-playerSimilar games →
  8. 8
    Line Of Defense Tactics - Tactical Advantage — Steam game cover

    Line Of Defense Tactics - Tactical Advantage

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

    A real-time strategy combat game based on the world of the Line Of Defense. Command a team of four Galactic Command marines in highly classified missions in space and on planets.

    2014ActionStrategyIndie9.99 USDSingle-playerSimilar games →
  9. 9
    M.A.C.E. — Steam game cover

    M.A.C.E.

    Single-player alternative to Starfall Defenders — playable solo, no multiplayer required. Shares Action with Starfall Defenders.

    MACE is a classic space shoot ’em up, inspired by the legendary Amiga games of this genre. Handdrawn 2D graphics in HD resolutions, parallax scrolling, explosion effects and optimized games mechanics, combined with the proven gameplay are transporting the “Spirit of Amiga” in today’s Age.

    2017ActionIndieCasual4.99 USDSingle-playerSimilar games →
  10. 10
    M.A.C.E. Tower Defense — Steam game cover

    M.A.C.E. Tower Defense

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

    M.A.C.E. Tower Defense is a classic tower defense game with unique towers and enemies and an ingame shop system for getting better towers, upgrade existing towers and buy special items.

    2017ActionStrategyIndie2.99 USDSingle-playerSimilar games →
  11. 11
    Spencer — Steam game cover

    Spencer

    Single-player alternative to Starfall Defenders — playable solo, no multiplayer required. Shares Action with Starfall Defenders.

    Spencer is a classic Jump´n Run with challenging levels and enemies. Find missing items, destroy enemies, collect coins and diamonds. 3D graphics packed in a nice graphics style, great 2.5D levels and proven gameplay gives you hours of fun.

    2018ActionIndieCasual4.99 USDSingle-playerSimilar games →
  12. 12
    Super Star Blast — Steam game cover

    Super Star Blast

    Single-player alternative to Starfall Defenders — playable solo, no multiplayer required. Shares Action with Starfall Defenders.

    Super Star Blast is a space based game with challenging levels of increasing difficulty. All enemies must be shot down to finish a level and go to the next one. A scanner around the player tells roughly where the enemies are located.

    2019ActionIndieCasual4.99 USDSingle-playerSimilar games →
  13. 13
    Monster Blast — Steam game cover

    Monster Blast

    Single-player alternative to Starfall Defenders — playable solo, no multiplayer required. Shares Action with Starfall Defenders.

    It´s all about blasting Monsters. On randomly generated maps you are shooting your path to find the exit and move on to the next level.

    2020ActionIndieCasual4.99 USDSingle-playerSimilar games →
  14. 14
    Radon Blast — Steam game cover

    Radon Blast

    Single-player alternative to Starfall Defenders — playable solo, no multiplayer required. Shares Action with Starfall Defenders.

    Radon Blast ist a Brick Breaker / Arkanoid style game, with a touch of Pong.

    2021ActionIndie2.99 USDSingle-playerSimilar games →
  15. 15
    Bubble Shooter FX — Steam game cover

    Bubble Shooter FX

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

    A great classic bubble shoot game.

    2021IndieCasual2.99 USDSingle-playerSimilar games →
  16. 16
    Pyramid Quest — Steam game cover

    Pyramid Quest

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

    Pyramid Quest is an exploration and treasure-hunting game inspired by classic platform games. The goal is to find the three parts of an artefact and open the gate to the next level while collecting diamonds and coins.

    2022IndieAdventure4.99 USDSingle-playerSimilar games →