itch.io

There would be some advantages to using a custom map format, but midi has the huge benefit of not needing a custom map editor (for myself as the dev, and for others when I release custom map support), since any DAW (including free ones) can be used to make maps. Making an editor would be a full project on its own, meaning there's no way I would have gotten the game out before Ch3&4 (and tbh I probably just wouldn't have bothered making it at all if I had to do that). And midi is fine for what this games needs anyway since it's just 2 inputs, with hold notes