Aria Protocol

ARIA listens to your music. Then she shoots at it.

A rhythmic bullet hell where every track becomes a different fight. ARIA analyses the sound live across seven frequency bands — from sub-bass to the very top — and each band drives its own firing patterns. Change the music and you change the battle.

Bring your own tracks. Import any MP3, OGG or WAV. She has never heard it before, and neither have you.

The campaign

Ten chapters, ten tracks, one story told in comic panels drawn entirely by code.

ARIA reboots after eleven years of silence. She believes she is dealing with an operator and runs a routine calibration. Then she explains what she is, what she was built to fight, and what happened on 14 March at 03:58.

She was not built to be alone.

What you need to know

• Focus reveals your hitbox: a red dot a few pixels wide. That is the only thing that can be hit — the rest of your character does not count.
• Graze is the heart of the score. Brushing a bullet without being hit pays big. Playing safe earns nothing.
• Difficulty is chosen at the start of every run, Touhou style.
• Thirty-eight attack combos, plus scripted specials in the campaign.

Also in the box

Playable in ten languages: English, French, Spanish, German, Italian, Portuguese (BR), Russian, Polish, Japanese, Simplified Chinese.

Keyboard, gamepad and touch, all remappable · shop and upgrades · Windows, Linux and Android.

About the AI disclosure

No image-generation model was used. The artwork is procedural: every comic panel, the icon and the cover are drawn by code.

Translations were produced with LLM assistance.

All music and sound effects are the work of human artists under open licences — full credits in the game.