I've won half the battle — turns out you can launch it from the itch.io app. However, the interface is un-usably small (even if I rescale it using the settings!) Any clues?
I managed to get it all fixed and wow — what a fantastic experience. Truly challenged me more than I expected a puzzle game would but I really enjoyed it! Now I want to go back and do it hint-free t see what the different end result is.