IMHO.

Single-player games like Only One

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

Ranked picks

  1. 1
    Turnflower — Steam game cover

    Turnflower

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

    Turnflower is a survivors-like where a small Flower becomes the last line of defense against swarms of insects! With just ONE button, spin and shoot through this intense and adorably chaotic challenge.

    2026ActionIndieCasualSingle-playerSimilar games →
  2. 2
    Ashen Swarm — Steam game cover

    Ashen Swarm

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

    Rise from the ashes and defeat the Judge before his sentence devours the last lands. Cut through a swarm of the condemned in a gothic bullet heaven roguelite, turning the seven deadly sins into weapons. Decide whom to save, doom, or betray. Do not let the verdict become the world's final word.

    2026ActionIndieRPGSingle-playerSimilar games →
  3. 3
    Flaghead — Steam game cover

    Flaghead

    Single-player alternative to Only One — playable solo, no multiplayer required. Shares Action and Casual with Only One.

    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 →
  4. 4
    Payback Protocol — Steam game cover

    Payback Protocol

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

    Annihilate alien armies, craft devastating builds and traverse hostile biomes in this fast-paced action roguelite! Choose from a roster of vengeful combat robots, each with unique strengths and abilities, and survive relentless alien hordes as you avenge the fall of humanity.

    2026ActionStrategyIndieSingle-playerSimilar games →
  5. 5
    Forecast Death — Steam game cover

    Forecast Death

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

    Survive the chaos of a bullet-heaven action game. Tear through enemy hordes, stack wild ability combos, and endure cataclysms that rewrite the rules mid-fight. The pace ramps up every minute - either you grow stronger, or you get wiped out.

    ActionStrategyIndieSingle-playerSimilar games →
  6. 6
    Voxie Survivor — Steam game cover

    Voxie Survivor

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

    Break monster swarms, lockdown rescue missions, and crush apex bosses as you weave through deep story driven chaos. Welcome to a bullet heaven roguelite where survival demands strategy. Master the chaos, it takes a real Voxie Survivor to conquer all!

    2026ActionIndieRPGSingle-playerSimilar games →
  7. 7
    Ballwark: Pinball Siege — Steam game cover

    Ballwark: Pinball Siege

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

    Pinball meets Vampire Survivors in this dopamine-packed arcade roguelite! Launch enchanted balls, build deadly machines, and forge powerful synergies to crush relentless hordes.

    2026ActionIndieCasualSingle-playerSimilar games →
  8. 8
    Glintwave — Steam game cover

    Glintwave

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

    A pixel-art bullet-heaven roguelite. Survive 100 waves across wild, distinct areas while stacking weapons, relics, and over 200 Arcana combinations into a screen-filling build. Unlock heroes, talents, and secrets between runs, then push through ten difficulty levels. Full controller support.

    ActionIndieRPGSingle-playerSimilar games →