Released a small update that adds the option to manually choose your rank from the main menu (press left/right when ranked mode is selected). This will come in handy in case you lose your save file, play on a new device or just want to jump up a few ranks at once.

Higher ranks have more enemies, but with that also much more potential for crazy combos, so check them out! Of course ranked mode will still automatically adjust to your results as before, so you can still leave finding the right rank for your skill level up to the game.

Also, I uploaded the Raspberry Pi version for those interested! :)