IMHO.

Single-player games like ADACA

Below are 13 single-player Steam games similar to ADACA, 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 ADACA page.

Ranked picks

  1. 1
    BIORAGE — Steam game cover

    BIORAGE

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

    Biorage is a high-intensity story-driven corridor FPS.

    2025Action0.99 USDSingle-playerSimilar games →
  2. 2
    Blue Sun — Steam game cover

    Blue Sun

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

    After years of oppression, the time has come to rise up. In this action-adventure boss-rush game, uncover a devastating conflict's history and take down FOFEC, an experimental enemy unit stripped of its humanity and modified to become the perfect super soldiers.

    ActionIndieAdventureSingle-playerSimilar games →
  3. 3
    Eldritch Break — Steam game cover

    Eldritch Break

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

    Vibrant, high-octane 2.5D Boomer Shooter that smashes together the fast-paced action of classics like Doom and Duke Nukem with the mind-bending, non-Euclidean environments of an eldritch prison.

    ActionIndieAdventureSingle-playerSimilar games →
  4. 4
    Skarven — Steam game cover

    Skarven

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

    Fallow fields birth strange life. Battle botanical abominations and a fanatical militant cult as you journey through a dark and distorted vision of the Danish countryside. Experience deep lore, thick atmosphere, and razor sharp mechanics in this raw yet refined classical narrative FPS.

    ActionIndieSingle-playerSimilar games →
  5. 5
    SCP: Broken God — Steam game cover

    SCP: Broken God

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

    You play as a member of the Foundation who has recently transferred to a new facility. During a routine day of work, an incursion occurs by a religious cult, known as the Church of the Broken God. Your role is one of a survivor, aiming to escape the breached facility or attempting to stop the cult.

    ActionIndieSingle-playerSimilar games →
  6. 6
    G String — Steam game cover

    G String

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

    Slip into the Standard Issue Biosuit as Myo Hyori, a gifted Korean teenage girl who must face the perils of the future. Survive many hazards, explore a seemingly endless metropolis and beyond as the world around you implodes and history marches towards its inevitable conclusion.

    2020ActionIndieAdventure17.99 USDSingle-playerSimilar games →
  7. 7
    Project Silverfish — Steam game cover

    Project Silverfish

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

    Explore a hostile, living world: Uncover forgotten horrors, both man-made and supernatural, as you hunt for powerful weapons and exotic artifacts.

    2025ActionIndieAdventure29.99 USDDeck PlayableSingle-playerSimilar games →
  8. 8
    Hard Reset Extended Edition — Steam game cover

    Hard Reset Extended Edition

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

    Over-the-top destruction, loads of enemies & a beautifully realized cyberpunk setting. Hard Reset is here to shake up the shooter scene. Try the demo now.

    2012ActionIndie14.99 USDDeck PlayableSingle-playerSimilar games →
  9. 9
    S.T.A.L.K.E.R.: Shadow of Chernobyl — Steam game cover

    S.T.A.L.K.E.R.: Shadow of Chernobyl

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

    S.T.A.L.K.E.R.: Shadow of Chernobyl tells a story about survival in the Zone – a very dangerous place, where you fear not only the radiation, anomalies and deadly creatures, but other S.T.A.L.K.E.R.s, who have their own goals and wishes.

    2007ActionRPG19.99 USDSingle-playerSimilar games →
  10. 10
    Half-Life 2 — Steam game cover

    Half-Life 2

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

    Reawakened from stasis in the occupied metropolis of City 17, Gordon Freeman is joined by Alyx Vance as he leads a desperate human resistance. Experience the landmark first-person shooter packed with immersive world-building, boundary-pushing physics, and exhilarating combat.

    2004Action9.99 USDDeck VerifiedSingle-playerSimilar games →
  11. 11
    Perfect Date — Steam game cover

    Perfect Date

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

    Perfect Date is a dating simulator where you will have the chance to prove that you can seduce some of the best-looking girls that you have ever met.

    2022IndieCasualDeck PlayableSingle-playerSimilar games →
  12. 12
    Haloo — Steam game cover

    Haloo

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

    Fight the endless mass of enemies, collect loot, get stronger and Haloo!

    2024ActionIndie2.99 USDSingle-playerSimilar games →
  13. 13
    TimeSplit — Steam game cover

    TimeSplit

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

    TimeSplit is a fast-paced cartoon FPS with creative time powers. Bend, pause, and rewind time to outsmart foes, dodge fire, and control battles. Use a diverse arsenal of weapons and abilities where every fight becomes a puzzle of timing and strategy.

    ActionAdventureSingle-playerSimilar games →