IMHO.

Single-player games like SECTOR

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

Ranked picks

  1. 1
    CARNAL — Steam game cover

    CARNAL

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

    CARNAL is a fast and challenging retro FPS straight from the mid '90s. The Sons of Anak are opening portals to extract Dark Matter from the "other side". Combat the possessed soldiers, the manifested demons helping them, and any inanimate objects standing in your way!

    2021ActionIndieAdventure0.99 USDSingle-playerSimilar games →
  2. 2
    Zortch — Steam game cover

    Zortch

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

    Meet Zortch Maxinum: short order cook, amateur engineer and professional slacker; Bored and tired of her day job she decides to go on a holiday but alas she picks a cheap option: turns out it's a scheme by aliens who capture humans to eat their brains! also this game is a sci-fi horror comedy fps

    2023ActionIndieAdventure4.99 USDDeck PlayableSingle-playerSimilar games →
  3. 3
    Prodeus — Steam game cover

    Prodeus

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

    Prodeus is a first-person shooter of old, re-imagined using modern rendering techniques and technology. Experience the quality you’d expect from a modern AAA game, designed with retro aesthetics and gameplay that invoke the tech-imposed limits of older hardware.

    2022ActionIndieAdventure24.99 USDDeck PlayableSingle-playerSimilar games →
  4. 4
    Devil Daggers — Steam game cover

    Devil Daggers

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

    Devil Daggers is a fast-paced shooter that places you in an abyssal arena to face endless legions of demons. Armed with versatile magic daggers and a fluid movement system, fight to survive as long as you can.

    2016ActionIndie9.99 USDDeck PlayableSingle-playerSimilar games →
  5. 5
    Black Mesa — Steam game cover

    Black Mesa

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

    Relive Half-Life.

    2020ActionIndieAdventure19.99 USDDeck PlayableSingle-playerSimilar games →
  6. 6
    Heavy Bullets — Steam game cover

    Heavy Bullets

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

    Heavy Bullets is a randomized FPS dungeon crawler where players make their way through a colorful maze, while protecting themselves from aggressive creatures and malfunctioning security devices. The goal lies at the end of the 8th level, where they must reset the security mainframe to restore order and reap the rewards.

    2014ActionIndie9.99 USDDeck PlayableSingle-playerSimilar games →
  7. 7
    Dead Effect — Steam game cover

    Dead Effect

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

    Fight for your life in the INDIE SCI-FI FPS game fit for both casual and hard-core gamers with a passion for hunting down hordes of zombies. Prepare yourselves for the incoming nightmare!

    2014ActionIndie4.99 USDDeck PlayableSingle-playerSimilar games →
  8. 8
    DUSK — Steam game cover

    DUSK

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

    Battle through an onslaught of mystical backwater cultists, possessed militants & even darker forces as you attempt to discover just what lurks beneath the Earth in this retro FPS inspired by the '90s legends.

    2018ActionIndie19.99 USDDeck VerifiedSingle-playerSimilar games →