IMHO.

Single-player games like Protobouncer

Below are 10 single-player Steam games similar to Protobouncer, 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 Protobouncer page.

Ranked picks

  1. 1
    SPINDRIVE — Steam game cover

    SPINDRIVE

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

    A sci-fi splitscreen platform fighter. Be the last one standing by collecting upgrade discs and destroying enemies in a procedurally-generated map.

    ActionIndieSingle-playerSimilar games →
  2. 2
    Frutiverse — Steam game cover

    Frutiverse

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

    Frutiverse is a 2D space game driven by orbital physics and a fully simulated environment. Navigate unstable solar systems, manipulate trajectories. Every asteroid can be turned into a weapon of mass destruction, triggering a chain reaction that sends the Solar system into chaos.

    2027ActionIndieSimulationSingle-playerSimilar games →
  3. 3
    Shadow Slayer — Steam game cover

    Shadow Slayer

    Single-player alternative to Protobouncer — playable solo, no multiplayer required. Shares Action and Early Access with Protobouncer.

    Become the ultimate shadow warrior. Master lethal precision, navigate a world consumed by darkness, and fight your way to victory. In Shadow Slayer, every move you make decides your fate. Will you conquer the shadows, or will they consume you?

    2026ActionIndieCasual5.00 USDSingle-playerSimilar games →
  4. 4
    Voidpath — Steam game cover

    Voidpath

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

    Top-down space combat roguelike: Blink through bullet storms, stack weapons, items, and synergies, chart four sectors, and face elites, hunters, and capital bosses — ending at the Singularity. Clear a run to unlock Endless. Solo or local co-op; Steam Arena & Versus PvP.

    ActionCasualSingle-playerSimilar games →
  5. 5
    Master of the Arena — Steam game cover

    Master of the Arena

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

    An action-packed arena brawler for up to 8 players! Battle in intense rounds. Customize your abilities. Fight to be the last one standing—or team up to take down relentless monsters.

    ActionStrategyIndieSingle-playerSimilar games →
  6. 6
    Endgame: Road To Salvation — Steam game cover

    Endgame: Road To Salvation

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

    A high-octane road trip through a besieged world during a demon-infested zombie apocalypse. Rescue survivors, form a caravan, call in various support drops or air strikes, loot random structures for supplies or craft them yourself, modify common vehicles into post-apocalyptic machines of war.

    2021ActionIndieAdventure11.99 USDSingle-playerSimilar games →
  7. 7
    INTO EVIL — Steam game cover

    INTO EVIL

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

    Hotline Miami x Dark Souls. Greatswords, demons, miniguns; up to 4 players. You are not prepared.

    2025ActionIndieAdventure14.99 USDDeck VerifiedSingle-playerSimilar games →
  8. 8
    BlazBlue Entropy Effect — Steam game cover

    BlazBlue Entropy Effect

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

    Enjoy action-packed flashy combat with incredibly satisfying combos and responsive controls! Numerous characters, each with completely unique playstyles and loads of unlockable moves & upgrades! This action roguelike sets the bar for fluid fast-paced action.

    2024ActionIndieAdventure12.99 USDDeck VerifiedSingle-playerSimilar games →
  9. 9
    Welcome to Neokyo City — Steam game cover

    Welcome to Neokyo City

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

    In a city governed by drones and powered by neon gas, hope soars through the rooftops in the form of a rogue human. Jump across rooftops, hack powerboxes, and avoid the ever present drones that oppress the citizens of Neokyo City in this open-world 2D platformer.

    ActionAdventureSingle-playerSimilar games →
  10. 10
    Graph Box — Steam game cover

    Graph Box

    Single-player alternative to Protobouncer — playable solo, no multiplayer required.

    Graph Box is a math-centric physics-based 2D platformer with metroidvania-esque exploration and progression. Focusing primarily on creativity and experimentation in its slower-paced platforming, it allows you to plan out your route and design unique paths using graphed equations as a core mechanic!

    SimulationCasualSingle-playerSimilar games →