HeapPlay

KittenGalaxy

Arcade, Shooter · HeapPlay

5.0 (1 rating)

Free · No registration · No installation · Loads when you press play

Fly a starship through waves of space invaders, boop flying cats for bonus points, and answer quick maths questions to turn the fight.

Ways to play

Each option is checked separately: an app for one system says nothing about browsers or other systems.

  • Desktop browser

    Play here

    Plays on this page. You stay on HeapPlay.

    Installation
    Not needed
    Registration
    No registration
    Price
    Free
    Controls
    Keyboard, Mouse
    Compatibility
    Played with the keyboard in a Chromium-based desktop browser on macOS: creating a pilot, flying and firing, the shop.
    Checked 8 Oct 2026 · HeapPlay, development check
    Version
    1.0.0 · updated 8 Oct 2026
    What changed
    • 1.0.0 · 8 Oct 2026 First release on HeapPlay.

  • Mobile browser

    Play here

    Plays on this page. You stay on HeapPlay.

    Installation
    Not needed
    Registration
    No registration
    Price
    Free
    Controls
    Touch
    Compatibility
    Touch controls checked in a desktop browser set to phone size, portrait and landscape, with scripted touches. Not yet confirmed on a physical phone or tablet.
    Checked 8 Oct 2026 · HeapPlay, development check
    Version
    1.0.0 · updated 8 Oct 2026
    What changed
    • 1.0.0 · 8 Oct 2026 First release on HeapPlay, with touch controls for phones and tablets: a thumb stick, auto-fire, and on-screen buttons for the menu, the shop and the maths challenges.

About

KittenGalaxy is an arcade shooter in pixel art. You steer a starship along the bottom of the screen, shoot down waves of invaders, and hit the cats that fly past for bonus points: chain them and the bonus multiplies.

Every point you score is also experience you can spend. Pause at any moment to open the shop, upgrade your ship, and save. Every fifth wave ends in a boss fight.

Now and then the action freezes and a professor asks an arithmetic question. A right answer sends a storm of numbers through the invaders; a wrong one sets the unsolved problem loose on you. The questions adapt to how well each pilot is doing.

The game has two campaigns of twenty waves: first in space, then down on the planet. Up to eight pilots can share one browser, each with their own name, best score and save, so a family or a class can take turns. Progress is saved in the browser at the start of every wave; nothing is sent anywhere and no account is needed.

Screenshots and video

KittenGalaxy: a wave of invaders above the starshipKittenGalaxy: a flying cat crosses the screen for bonus pointsKittenGalaxy: the professor asks an arithmetic questionKittenGalaxy: the shop, where points are spent on upgrades

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