IMHO.

Single-player games like KILLSWARM

Below are 8 single-player Steam games similar to KILLSWARM, 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 KILLSWARM page.

Ranked picks

  1. 1
    Zero Distance — Steam game cover

    Zero Distance

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

    Fight overwhelming zombie hordes in a 3D bullet heaven where packing your case shapes your firepower. Arrange weapons, gear and supplies to unleash fire, lightning and explosive combinations. Survive 20 minutes, defeat the boss and earn your extraction.

    2027ActionIndieRPGSingle-playerSimilar games →
  2. 2
    Gunstoppable — Steam game cover

    Gunstoppable

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

    A momentum-fueled Roguelite FPS where speed is damage. Dual-wield overpowered weapon combos and bend time to obliterate robot hordes and overthrow billionaire bosses!

    2026ActionIndie12.49 USDSingle-playerSimilar games →
  3. 3
    Amazing Slot Survivor (A.S.S.) — Steam game cover

    Amazing Slot Survivor (A.S.S.)

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

    Spin the slot machine and see how powerful you'll become! Luck shapes your arsenal, but only skill keeps you alive in this high-stakes bullet heaven roguelite. Master unique weapons and destroy the Spawners summoning endless hordes, and push your luck to the limit.

    2026ActionIndieRPGSingle-playerSimilar games →
  4. 4
    EDEN95 — Steam game cover

    EDEN95

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

    EDEN95 is the survivorlike where your gun is your engine. Survive escalating waves using the recoil of your gun, gear up in the shop, and grow stronger with every run.

    ActionIndieRPGSingle-playerSimilar games →
  5. 5
    Flaghead — Steam game cover

    Flaghead

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

    Flaghead is an arena shooter roguelite where you play as a country, surviving through history from the dark ages into the cybernetic futures and beyond.

    2027ActionStrategyRPGSingle-playerSimilar games →
  6. 6
    NeuroSquad - Slay the Horde — Steam game cover

    NeuroSquad - Slay the Horde

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

    Invent your own weapons in this sci-fi Roguelike shooter! Combine any weapon with any upgrade to customize your arsenal. Form a squad of holographic soldiers, redesign their guns too, and slay hordes of cybernetic enemies!

    ActionIndieRPGSingle-playerSimilar games →
  7. 7
    Blue Guy Must Die — Steam game cover

    Blue Guy Must Die

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

    Survivors-like Early Access: kite toxic bugs in the Forest while your loadout auto-fires, level up, and clear waves. Desert and Factory zones are planned for the full release.

    2026ActionIndieEarly Access3.74 USDSingle-playerSimilar games →
  8. 8
    Gladiator Survivors — Steam game cover

    Gladiator Survivors

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

    Gladiator Survivors is an explosive mix of fast-paced FPS, bullet heaven, and roguelike gameplay. Play as a gladiator wielding up to 6 futuristic weapons simultaneously, and survive wave after wave of enemies swarming the arenas.

    ActionSingle-playerSimilar games →