IMHO.

Single-player games like KILLSEC

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

Ranked picks

  1. 1
    Hellrifters — Steam game cover

    Hellrifters

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

    Lead a growing squad of Hellrifters and direct their auto-fire through Hell’s hordes in this twin-stick survivors-like roguelite. Start with one fighter, build into a four-hero firing line, unleash powerful abilities, and return stronger after every descent into the abyss.

    ActionIndieSingle-playerSimilar games →
  2. 2
    Time Recoil — Steam game cover

    Time Recoil

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

    Time Recoil is a top-down shooter with a slow motion twist! Punch through walls guns blazing while time slows down! See your enemies drop down like flies - and save the world from a mad scientist dictator!

    2017ActionSportsIndie13.99 USDSingle-playerSimilar games →
  3. 3
    Katana's Path — Steam game cover

    Katana's Path

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

    Katana's Path is a fast-paced arena arcade slasher, where you can control your samurai and your katana in a unique game mechanic. Slash through many enemies at a rainy cyberpunk city or colorful forests using the best gear you can get!

    2024ActionIndieCasual2.99 USDSingle-playerSimilar games →
  4. 4
    Tiny Tank — Steam game cover

    Tiny Tank

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

    The era of Tiny Tank begins! Tiny Tank is a Classic Hero Shooter, in this game you only have one objective and that is to… SURVIVE! Hold out and battle the hordes of enemies with each wave being harder than the last.

    2021ActionSportsStrategySingle-playerSimilar games →
  5. 5
    GUN SOLVER — Steam game cover

    GUN SOLVER

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

    GUN SOLVER is a mind-bending top-down shooter where every gunfight is a puzzle to be solved. Use experimental bullets to dodge, teleport and kill enemies in slow motion. Strategize, improvise, and destroy the corporation that wronged you.

    ActionIndieAdventureSingle-playerSimilar games →
  6. 6
    Survivor Mercs — Steam game cover

    Survivor Mercs

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

    Purge the billionaires' robot army with your Merc squad! Fast-paced twin-stick action, frantic horde survival, tactical squad-building & tons of loot! Exploit game-breaking synergies to beat the M.E.G.A. Corp. bosses in ever-changing operations. Lock, load, and loot, Commander!

    2026ActionIndieRPG9.99 USDDeck VerifiedSingle-playerSimilar games →
  7. 7
    Waves 2: Notorious — Steam game cover

    Waves 2: Notorious

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

    Waves 2: Notorious is an arcade twin-stick shooter set in Cyberspace. Build Combos, earn Adrenaline and unleash powerful Burst attacks as you Dive into the Net and do battle against an AI that adapts to your weaknesses!

    2015ActionEarly AccessFreeSingle-playerSimilar games →
  8. 8
    UltraGoodness 2 — Steam game cover

    UltraGoodness 2

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

    The struggle between Good and Evil continues in this bloody action, top-down action-roguelike shooter where time moves only when you move or shoot. Tear Satan's forces to pieces, leave oceans of their blood and mountains of demon's corpses in the name of Goodness!

    2019ActionIndieAdventure4.99 USDSingle-playerSimilar games →