Auto — guided campaign. Starts easy with note names and chord functions visible, then ramps up automatically as you score.

Custom — pick your own key, level, and what's shown, same as before.

Connect a MIDI keyboard (or a MIDI-capable app on your phone), then pick your key and level from the setup screen.

Notes and chords fall from the top of the play area. Play the note or chord shown — all its notes at once, on your MIDI keyboard — before it reaches the bottom.

Match it in time and it pops; let it fall past the bottom and you lose a life. Run out of lives and the game ends.

Levels 1-3 are free and cover scale notes and basic chords. Levels 4-8 add note ordering, root-in-bass voicings, seventh chords, and more — unlock them with a one-time purchase from the setup screen.

Thank you for checking out this game. The idea behind this game is to help you learn piano chords and master common chord progressions across various keys using a MIDI device. Whether you're a beginner piano or keyboard player looking to understand how to connect chords or someone who enjoys playing different pieces, composing, or improvising, Chord Nebula is here to assist you.

Please note that Chord Nebula is still under development, and you might encounter some issues. Your recent support and feedback have given me the motivation and enthusiasm to continue expanding this software, and I will be working on improvements soon.

You can access the project source through the link below. If you encounter any problems or have suggestions, please let me know. Additionally, starring the repository on GitHub will encourage me to keep developing this project.
https://github.com/yottanami/chord_nebula

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Nothing to configure here yet — check back in a future update.