DECRYPTING SIGNAL // ASTRO LOOP

Signal acquired. One ship, one pilot, a crew waiting to be recruited. The rest is out there in the dark.

System readout

• Simple to play. Steer with a single finger. Your guns fire on their own. Easy to pick up, hard to put down.
• Open source. No black boxes. The whole game is open here on GitHub, GPLv3.
• Plays offline. Works with no signal at all. The whole game lives on your phone.
• No ads, no tracking. Zero internet permission. It collects nothing. Not one byte ever leaves your phone.
• No sensitive permissions. No camera, mic, location, contacts, files or network. It never asks you for a thing.
• Free forever. No price, no in-app purchases, no pay-to-win. The whole game, free.

Gameplay

• Fly out and survive endless waves of asteroids and enemies.
• Recruit a crew of pilots and unlock new ships to fly.
• Pick fresh weapons and upgrades every run.
• The difficulty never stops climbing. See how far you get.

Building

Requires Android SDK 36 and JDK 17.

./gradlew assembleDebug
# output: app/build/outputs/apk/debug/app-debug.apk

No game engine: everything is drawn as vectors on a Canvas in pure Kotlin.

Contributing

This repository does not accept pull requests or code contributions. The code is here so you can read it, build it and learn from it, or use it in your own projects under the GPL.

Issues of every kind are welcome: bug reports, feature requests and ideas. Open one here.

License

Astro Loop is free software under the GNU General Public License v3.0 (GPL-3.0-only). See LICENSE.

The bundled fonts (Exo 2, Orbitron) are under the SIL Open Font License 1.1. See THIRD_PARTY_NOTICES.md.

Copyright (C) 2026 PubDeer

Support

If you enjoy Astro Loop, you can support development on GitHub Sponsors or Ko-fi.

No cookies. No trackers. No nonsense.