IMHO.

Single-player games like tri.Attack();

Below are 8 single-player Steam games similar to tri.Attack();, 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 tri.Attack(); page.

Ranked picks

  1. 1
    Downwell — Steam game cover

    Downwell

    Single-player alternative to tri.Attack(); — playable solo, no multiplayer required. Shares Action and Indie with tri.Attack();.

    Downwell is a curious game about a young person venturing down a well in search of untold treasures with only his Gunboots to protect him.

    2015ActionIndieAdventure2.99 USDDeck VerifiedSingle-playerSimilar games →
  2. 2
    DRAINUS — Steam game cover

    DRAINUS

    Single-player alternative to tri.Attack(); — playable solo, no multiplayer required. Shares Action and Indie with tri.Attack();.

    This is a side-scrolling shooting game in which you take control of the "Drainus", the Kharlal Empire's most cutting-edge fighter with the ability to absorb energy bullets, and take down the enemy ships zipping through space.

    2022ActionIndie14.99 USDDeck VerifiedSingle-playerSimilar games →
  3. 3
    Tadpole Treble — Steam game cover

    Tadpole Treble

    Single-player alternative to tri.Attack(); — playable solo, no multiplayer required. Shares Action and Indie with tri.Attack();.

    Embark on a thrilling adventure through sheet music in Tadpole Treble! Escape predatory piranhas, flirtatious tadpoles and more as you make your way back home. Shoot for the top of the leaderboards, or create your own stages and music in Composition Mode!

    2016ActionIndieAdventure4.99 USDSingle-playerSimilar games →
  4. 4
    Razor2: Hidden Skies — Steam game cover

    Razor2: Hidden Skies

    Single-player alternative to tri.Attack(); — playable solo, no multiplayer required. Shares Action and Indie with tri.Attack();.

    Razor2: Hidden Skies Razor2: Hidden Skies is a top view shooter. The game has the style of successful classic arcade games, while using the latest technology to create great visuals and effects. An old-school game with all new technology.

    2010ActionIndieCasual7.99 USDSingle-playerSimilar games →
  5. 5
    ARMED SEVEN — Steam game cover

    ARMED SEVEN

    Single-player alternative to tri.Attack(); — playable solo, no multiplayer required. Shares Action and Indie with tri.Attack();.

    The year is 1989. 12 years have passed since the Gogoh Army’s invasion of Earth. Exposure to alien technology during the war enabled Earth’s own technologies to take massive leaps forward. International conflict that was previously rife in the history of mankind fell to an all-time low, and the Earth Federation was established as a...

    2015ActionIndie2.49 USDDeck VerifiedSingle-playerSimilar games →
  6. 6
    Ion Assault — Steam game cover

    Ion Assault

    Single-player alternative to tri.Attack(); — playable solo, no multiplayer required. Shares Action and Indie with tri.Attack();.

    In ION ASSAULT players wield thousands of Ion Particles to blast, fry and disrupt anything on screen as you see fit! GAMEPLAY WITH A TWIST: By centering its gameplay around its unique fluid and particle physics system, ION ASSAULT adds a twist to arcade style space shooters!

    2010ActionIndieCasual2.49 USDSingle-playerSimilar games →
  7. 7
    The Great Escape — Steam game cover

    The Great Escape

    Single-player alternative to tri.Attack(); — playable solo, no multiplayer required. Shares Action and Indie with tri.Attack();.

    The Great Escape is a infinity runner where player guides a spaceship through a narrow tunnel filled with incoming obstacles. The more you advance harder the hazards become.

    2016ActionIndieCasual2.99 USDSingle-playerSimilar games →
  8. 8
    Ikaruga — Steam game cover

    Ikaruga

    Single-player alternative to tri.Attack(); — playable solo, no multiplayer required. Shares Action and Indie with tri.Attack();.

    Shoot! Dodge! and... Get Hit!? "Ikaruga" is a vertical shoot 'em up that features an unique polarity-switching gameplay. Switch the ship's polarity and "get hit and absorb" enemy bullets! Achieve High Score with the chain bonus!

    2014ActionIndie9.99 USDDeck VerifiedSingle-playerSimilar games →